US Pat. No. 10,921,525

GRATING COUPLER AND INTEGRATED GRATING COUPLER SYSTEM

Mitsubishi Electric Resea...

1. A grating coupler having first and second ends for coupling a light beam to a waveguide of a chip comprising:a substrate configured to receive the light beam from the first end and transmit the light beam through the second end, the substrate having a first refractive index n1;
a grating structure having grating lines arranged on the substrate, the grating structure having a second refractive index n2, wherein the grating lines have line width w and height d and are arranged by a pitch ?, wherein the second refractive index n2 is greater than first refractive index n1, wherein the grating structure is configured to maintain a diffraction angle of the light beam from the second end in a range between 33 degree and 90 degree; and
a cladding layer configured to cover the grating structure, wherein the cladding layer has a third refractive index n3, wherein the third refractive index n3 is less than the second refractive index n2, wherein the cladding layer is arranged so as to reflect the light beam diffracted from the grating structure toward below the cladding layer.

US Pat. No. 10,921,524

CRIMPED MM-WAVE WAVEGUIDE TAP CONNECTOR

Intel Corporation, Santa...

1. A sensor node, comprising:an interconnect with an input connector, an output connector, and an opening that extends through one or more sidewalls of the interconnect, wherein the opening exposes an inner sidewall of the interconnect, the inner sidewall opposite the opening; and
a package with one or more sidewalls, a top surface, and a bottom surface that is opposite of the top surface, wherein a portion of the package is disposed entirely within the opening of the interconnect, and wherein the portion includes a region of a sidewall of the package that is directly coupled to the inner sidewall in the opening of the interconnect.

US Pat. No. 10,921,523

DISPLAY SYSTEM AND COMPONENTS

L-3 Technologies, Inc., ...

21. A display system comprising:a screen having a concave surface positioned so as to be visible to a user of the system;
said screen comprising a plurality of screen elements supported adjacent one another so as to form said concave surface, each of the screen elements comprising
a respective faceplate comprising optical fibers extending adjacent each other so as to transmit light therethrough between two opposing faceplate surfaces;
one of said faceplate surfaces being a concave display image output surface; and
the other of said faceplate surfaces being an image input surface; and
a respective light engine having a field of pixels each transmitting light corresponding to serial images of said light engine; and
the fibers of the faceplate receiving the light of the pixels of the light engine and together transmitting said light from the light engine coherently to the image output surface thereof so that the images of the light engine are displayed on the image output surface; and
wherein some of the elements are kite-shaped and some of the screen elements are asymmetrical quadrilateral shaped, and five of the kite-shaped elements are supported in a pentagonal arrangement, and five additional kite shaped elements and at least five asymmetrical quadrilateral elements together form a pentagonal perimeter area around the pentagonal arrangement.

US Pat. No. 10,921,522

OPTICAL FIBER MEMBER AND OPTICAL FIBER HOLDER

TDK CORPORATION, Tokyo (...

1. An optical fiber member comprising:two holding members that hold an optical fiber such that an end surface of the optical fiber is located on one end and a predetermined part having a coat of the optical fiber is curved to be extended at another end, wherein
the two holding members include holding flat portions that sandwich an end portion of the optical fiber where the coat is removed such that the end surface of the optical fiber is located on the one end of the optical fiber member,
at least any of the holding flat portions included in the two holding members has an aligning groove to fix a position of the end portion of the optical fiber, and
a first holding member among the two holding members positioned in an extending direction of the optical fiber has a curved surface at a position adjacent to the predetermined part in the extending direction, the curved surface being curved with a predetermined curvature radius along the extending direction of the optical fiber,
wherein the optical fiber is secured to the curved surface with an adhesive,
wherein the two holding members further include anchor flat portions that are flat surfaces parallel to the holding flat portions, and the anchor flat portions have level differences corresponding to a thickness of the coat of the optical fiber, and
wherein an end portion of the coat of the optical fiber is housed between the anchor flat portions of the two holding members.

US Pat. No. 10,921,521

SPLICE CLOSURE AND METHOD FOR INSTALLING OPTICAL CABLE

Huawei Technologies Co., ...

1. A splice closure, comprising:a closure body;
a cable accommodating tray disposed inside the closure body, wherein an end face of the closure body comprises a first cable access hole, a first installation tube is connected to the first cable access hole, an outer surface of the first installation tube comprises an annular externally threaded section, and the first installation tube has a first opening;
a first nut component, wherein an inner surface of the first nut component comprises an annular internally threaded section;
a first abutting member, wherein the first abutting member is hollow, and the first abutting member is disposed in the first nut component;
a first elastic member and a second elastic member, wherein the first elastic member and the second elastic member are hollow, and the first elastic member is disposed in the first installation tube and the second elastic member is disposed in a second installation tube, and the second installation tube has a second opening; and
at least two gaskets;
wherein when an optical cable is threaded through the first nut component, the first installation tube, and the first cable access hole and installed in the cable accommodating tray, the first abutting member is located between the optical cable and the first nut component, and the first elastic member is located between the optical cable and the first installation tube;
wherein when the first nut component is screwed to the externally threaded section of the first installation tube using threads of the internally threaded section, the first abutting member abuts the first elastic member, the first elastic member elastically deforms under an abutting effect of the first abutting member, an inner wall of the first elastic member elastically deforms to abut the optical cable, and an outer wall of the first elastic member elastically deforms to abut an inner wall of the first installation tube;
wherein the splice closure further comprises a wedge-shaped block, and an elastic layer on an outer surface of a head of the wedge-shaped block;
wherein the head of the wedge-shaped block is disposed in a mouth of the first cable access hole, and the head of the wedge-shaped block abuts between the first elastic member and the second elastic member;
wherein the first elastic member and the elastic layer abut against each other through the first opening, and the second elastic member and the elastic layer abut against each other through the second opening;
wherein a first gasket of the at least two gaskets is disposed on a target end face of the first elastic member, and the target end face of the first elastic member is an end face, facing the first cable access hole, of the first elastic member, or an end face, facing the first abutting member, of the first elastic member;
wherein the first gasket abuts the target end face of the first elastic member, or the first gasket is fixedly disposed on the target end face of the first elastic member;
wherein the end face of the closure body further comprises a second cable access hole, and the splice closure further comprises a third installation tube, wherein the second cable access hole and the third installation tube are configured to be used to install a branching cable; and
wherein an inner wall of a mouth of the second cable access hole comprises a second abutting portion, and an elastic fastener is disposed on an outer wall of the third installation tube, and when the elastic fastener is fastened to the second abutting portion, the third installation tube is fixedly disposed on the second cable access hole.

US Pat. No. 10,921,520

FUSION SPLICING SYSTEM, FUSION SPLICER AND METHOD OF DETERMINING ROTATION ANGLE OF OPTICAL FIBER

FURUKAWA ELECTRIC CO., LT...

1. A fusion splicing system comprising:a brightness profile extracting unit configured to extract brightness profile data indicating brightness profile in a radial direction of an optical fiber based on image data imaged from the radial direction of the optical fiber;
a features extracting unit configured to reduce the number of dimensions of the brightness profile data, thereby extracting a features of the brightness profile data for each rotation angle of the optical fiber;
a prediction model creation unit configured to perform machine learning by using teacher data indicating a correspondence relationship between a rotation angle of the optical fiber and brightness profile in the radial direction for each rotation angle of the optical fiber, the teacher data being created based on the features, and create a prediction model that is able to determine a rotation angle of an arbitrary optical fiber based on brightness profile data indicating brightness profile in the radial direction of the arbitrary optical fiber;
a determination unit configured to determine the rotation angle of each of a pair of optical fibers by using the prediction model based on the brightness profile data that are extracted by the brightness profile extracting unit based on image data in the radial direction of the pair of optical fibers as a target of fusion splicing; and
a functional unit configured to perform rotation alignment of the pair of optical fibers based on the determined rotation angle, and fusion-splice the pair of optical fibers after rotation alignment.

US Pat. No. 10,921,519

DETERMINISTIC FREQUENCY TUNING OF QUANTUM DOTS IN PHOTONIC CRYSTAL MEMBRANES USING MICRO-LASER PROCESSING

The Government of the Uni...

1. A method of tuning quantum dot emission frequency, comprising:providing a plurality of quantum dots embedded in a photonic crystal membrane;
conducting laser light treatment by directing laser light at one or more of the quantum dots, thereby causing a permanent shift in an emission frequency of the one or more quantum dots; and
measuring the emission frequency of the one or more quantum dots following the laser light treatment and optionally conducting laser light treatment again.

US Pat. No. 10,921,518

SKEWED ADIABATIC TRANSITION

INTERNATIONAL BUSINESS MA...

1. An apparatus for coupling optical fiber to a photonic chip, comprising:a low index contrast waveguide overlapping a region of the photonic chip;
a high index contrast waveguide at least partially embedded within the overlapped region of the photonic chip, wherein the high index contrast waveguide comprises a tapered region and a fixed-width routing region, and wherein the tapered region comprises an adiabatic crossing region and a wide waveguide region connecting the adiabatic crossing region and the fixed-width routing region; and
wherein a rate of increase of a width of the high index contrast waveguide with respect to position along a length of the high index contrast waveguide is substantially non-linear within the adiabatic crossing region and substantially asymmetric about a minimum slope point where the rate of increase of the width is at a minimum for the tapered region.

US Pat. No. 10,921,517

ELECTRO-OPTIC WAVEGUIDE DEVICE AND OPTICAL MODULE

Lumentum Japan, Inc., Ka...

1. An electro-optic waveguide device comprising:a slot waveguide including a lower high-refractive-index layer with a first refractive index and an upper high-refractive-index layer with a second refractive index,
wherein the lower high-refractive-index layer and the upper high-refractive-index layer have conductivity and are disposed to face each other with a gap; and
a slot part formed as a low-refractive-index layer,
wherein the low-refractive-index layer is formed of a material producing an electro-optic effect and has a third refractive index lower than the first refractive index and the second refractive index,
wherein the low-refractive-index layer is formed in the gap to come into contact with the lower high-refractive-index layer and the upper high-refractive-index layer,
wherein one of the lower high-refractive-index layer or the upper high-refractive-index layer includes a stretch stretching beyond both sides of a contact portion with the slot part in a width direction intersecting a transmission direction of the slot waveguide,
at least a portion of the stretch remaining planar with the contact portion, and
the contact portion spanning, in the width direction, for an entire width of the slot part where the slot part makes contact with the one of the lower high-refractive-index layer or the upper high-refractive-index layer, and
wherein another one of the lower high-refractive-index layer or the upper high-refractive-index layer includes portions facing the stretch in a cross-sectional shape in the width direction.

US Pat. No. 10,921,516

PHOTODIODE DEVICE MONOLITHICALLY INTEGRATING WAVEGUIDE ELEMENT WITH PHOTODIODE ELEMENT TYPE OF OPTICAL WAVEGUIDE

Sumitomo Electric Device ...

1. A photodiode device, comprising:a substrate providing a conducting layer doped with n-type impurities, the conducting layer having a first region and a second region next to the first region;
a waveguide element provided on the first region of the conducting layer, the waveguide element including:
a core layer provided on the conducting layer, and
a cladding layer provided on the core layer; and
a photodiode element provided on the second region of the conducting layer, the photodiode element being optically coupled with the waveguide element and including:
an absorption layer that is provided on the conducting layer and has a thickness thinner than a thickness of the core layer, the absorption layer abutting against the core layer in the waveguide element, and
a p-type cladding layer that is provided on the absorption layer and doped with p-type impurities,
an intermediate layer provided between the conducting layer and the absorption layer, the intermediate layer having a thickness less than a difference between a thickness of the core layer and a thickness of the absorption layer.

US Pat. No. 10,921,515

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME

RENESAS ELECTRONICS CORPO...

1. A semiconductor device comprising:a substrate including a first surface and a second surface opposite the first surface;
an insulating layer formed on the first surface;
an optical waveguide formed on the insulating layer and formed of a semiconducting layer; and
a cover disposed on the second surface of the substrate such that the cover covers the first opening,
wherein a first opening is formed on the second surface,
wherein the optical waveguide overlaps the first opening in plan view, and
wherein an inert gas is contained in the first opening.

US Pat. No. 10,921,514

SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF THE SAME

RENESAS ELECTRONICS CORPO...

1. A semiconductor device comprising:a first clad layer;
a first optical waveguide formed on the first clad layer;
a second clad layer formed on the first optical waveguide and the first clad layer, the second clad layer having an opening overlapping an end portion of the first optical waveguide in plan view;
a second optical waveguide optically connected with the first optical waveguide and formed in the opening; and
a third clad layer burying the opening and configured to surround the second optical waveguide,
wherein the third clad layer comprises:
a first resin portion formed in the opening such that the second optical waveguide is formed on the first resin, the first resin portion being composed of a material including resin; and
a second resin portion formed on the first resin portion such that the second resin portion covers the second optical waveguide, the second resin portion composed of a material including resin, and
wherein the second optical waveguide is configured to reach an upper surface of the third clad layer from the end portion of the first optical waveguide.

US Pat. No. 10,921,513

METHOD OF SELECTING WIDEBAND MULTIMODE FIBER FROM 850 NM DIFFERENTIAL MODE DELAYS

Corning Incorporated, Co...

1. A method for selecting fibers meeting requirements of a second minimum bandwidth at a second wavelength based on differential mode delay data measured at a first wavelength different from the second wavelength, the method comprising:measuring the differential mode delay (DMD) data for the multimode fiber at the first wavelength, wherein the DMD data comprises output laser pulse data as a function of the radial position of an input laser pulse having the first wavelength;
selecting the multimode fiber based on meeting requirements of the second minimum bandwidth at the second wavelength based on a second set of criteria, comprising a second criterion comprising:
the radial dependence of the differential mode delay data measured at the first wavelength being within a pre-determined tolerance of a pre-determined reference function constructed by concatenating two or more even-order polynomials having the form:

wherein:
a is a normalizing factor;
r is variable radial position on the fiber over at least two different ranges r1,k?r c0,k, c1,k, and c2,k are coefficients that are constant within each range of r;
r1,k and r2,k are discrete radial positions on the fiber marking the boundary of each range of r;
k is an indexing variable with values k={1 . . . K} where K is 2 or 3.

US Pat. No. 10,921,512

MULTI-MODE OPTICAL FIBER AND METHODS FOR MANUFACTURING THE SAME

Corning Incorporated, Co...

1. A method for forming an optical fiber comprising:heating a multi-mode optical fiber preform;
applying a draw tension to a root of the multi-mode optical fiber preform on a long axis of the multi-mode optical fiber preform thereby drawing a multi-mode optical fiber from the root of the multi-mode optical fiber preform; and
modulating the draw tension while the multi-mode optical fiber is drawn from the root of the multi-mode optical fiber preform, wherein:
modulating the draw tension comprises vertically displacing the multi-mode optical fiber preform along a vertical axis parallel to the long axis of the multi-mode optical fiber preform; and
modulating the draw tension introduces stress perturbations in the multi-mode optical fiber and corresponding refractive index perturbations in a core of the multi-mode optical fiber.

US Pat. No. 10,921,511

FLOOR LIGHTING ASSEMBLY

THE BOEING COMPANY, Chic...

1. A floor lighting assembly comprising:a luminous composite sheet including a light guide film, a substrate, a translucent laminate coating, and a plurality of light sources, the light guide film having a top side, a bottom side opposite the top side, and an edge extending from the top side to the bottom side, the substrate positioned adjacent to the edge of the light guide film, the light sources mounted on the substrate and arranged in a row at or proximate to the edge of the light guide film, the light sources configured to emit light into the light guide film through the edge, the laminate coating being thermoset to cover and conform to both a top side of the substrate and the top side of the light guide film, wherein a top surface of the laminate coating is planar; and
a light transmissive carpet disposed on the top surface of the laminate coating, the light transmissive carpet including a backing structure and a pile mounted to and extending from the backing structure,
wherein the light guide film is configured to spread and redirect the light that is received therein through the edge for emitting the light through the top side of the light guide film such that some of the light is transmitted through the laminate coating and the light transmissive carpet.

US Pat. No. 10,921,510

EXPANDABLE LIGHT GUIDE FOR BACKLIGHT

Manufacturing Resources I...

1. A light guide assembly for a backlight, comprising:a planar light guide having first and second opposing edges to be illuminated;
a plurality of slots in the light guide, each slot having a length that extends parallel to the first and second opposing edges of the light guide;
a planar light guide spacer residing rearward of the light guide and associated with the first and second opposing edges of the light guide;
a back pan residing rearward of the light guide spacer;
first and second L-shaped LED connecting assemblies, each LED connecting assembly having a connecting portion that resides rearward of the light guide and is coupled to the light guide spacer, and a LED mounting portion that extends transversely from the light guide connecting portion to reside adjacent to and parallel with a respective one of the opposing edges of the light guide when the LED connecting assemblies are coupled thereto; and
a plurality of slots through the back pan, the slots having a length that extends perpendicular to the slots in the light guide and arranged to receive a portion of posts that couple the light guide spacer to the connecting portions of the LED connecting assemblies;
whereby the light guide spacer and the LED connecting assemblies are constrained to move in kind with the light guide during thermal expansion or contraction of the light guide in a direction perpendicular to the length of the slots in the light guide.

US Pat. No. 10,921,509

ILLUMINATION DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

Japan Display Inc., Toky...

1. A liquid crystal display device comprising:a display panel including:
a first substrate,
a second substrate opposed to the first substrate, and
a liquid crystal layer held between the first substrate and the second substrate,
a polarizer adhered to the first substrate; and
an illumination device which illuminates the display panel, wherein
the illumination device comprises:
a light unit including light sources arranged in a first direction;
a light guide plate including at least an end;
a sheet member disposed between the light guide plate and the polarizer;
a frame disposed along the end and including an inner surface and an upper surface; and
an adhesion member disposed on the upper surface of the frame,
the adhesion member extends over the sheet member from the upper surface of the frame and overlaps an end portion of the sheet member such that the adhesion member adheres the polarizer and the frame, and also adheres the polarizer and the sheet member,
the end portion of the sheet member overlaps the inner surface of the frame in a plan view, and is not in contact with the inner surface of the frame,
the light guide plate, the sheet member and the display panel are stacked, and
at least the inner surface of the frame is a light absorbing surface, and the adhesion member is light transmissive.

US Pat. No. 10,921,508

CURVED LIGHT GUIDE ASSEMBLY

ABL IP Holding LLC, Atla...

1. A method of assembling a light fixture, the method comprising:providing a light guide having top and bottom major surfaces and two parallel edge faces between the top and bottom major surfaces, the edge faces being on opposite sides of the light guide, and the two edge faces being separated by a width of the light guide;
providing a backing structure comprising a sheet having top and bottom major surfaces and first and second flanges at two opposite edges of the sheet, the first and second flanges being generally perpendicular to the major surfaces of the sheet and generally parallel to each other when the sheet is flat, and extending away from the bottom major surface of the sheet;
installing a row of light emitting diodes on the first flange, the light emitting diodes positioned to direct light away from the first flange and toward the second flange, and generally parallel with the major surfaces of the sheet;
positioning one of the major surfaces of the light guide adjacent the bottom major surface of the sheet with the light guide between the flanges of the backing structure, wherein one of the two parallel edge faces of the light guide is near the row of light emitting diodes and the other of the parallel edge faces of the light guide is near the second flange, wherein the distance between the light emitting diodes and the second flange is larger than the width of the light guide by a gap distance; and
bending the backing structure and the light guide such that the bottom major surface of the backing structure is concave and the first and second flanges are drawn toward each other, and such that the light emitting diodes and the second flange are drawn toward the parallel edge faces of the light guide, to close the gap distance.

US Pat. No. 10,921,507

OPTICAL SHEET, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, AND INFORMATION EQUIPMENT

KEIWA Inc., Tokyo (JP)

1. An optical sheet incorporated into a liquid crystal display device having a display surface, a distance from an end of the display surface to an end of a visible region of the display surface being 10 mm or less, whereinthe optical sheet includes a luminance equalization region formed on one surface of the optical sheet to equalize luminance of the visible region,
the luminance equalization region in its entirety or part is in at least the visible region in a state in which the optical sheet is incorporated into the liquid crystal display device,
the luminance equalization region in the visible region has a colored portion and a light-transmitting portion that surrounds the colored portion, and
the colored portion comprises a light absorbing agent.

US Pat. No. 10,921,506

LIGHT GUIDE PLATE, METHOD OF FABRICATING LIGHT GUIDE PLATE, BACKLIGHT MODULE, DISPLAY DEVICE

Hefei BOE Optoelectronics...

1. A light guide plate comprising:a light guide layer, comprising a light incident surface, a light exit surface, and a bottom surface opposite to the light exit surface; and
a grating layer, disposed on a side of the light guide layer with the light exit surface being on the side and comprising a plurality of grating strips,
wherein the bottom surface is provided with a plurality of optical dots,
the plurality of optical dots are configured to deflect light rays from the light incident surface toward the grating strips,
the plurality of grating strips are configured to deflect light rays emitted from the light exit surface toward a normal line of the light exit surface,
a refractive index of the light guide layer is configured to allow total reflection of light to occur on the light exit surface,
each of the plurality of optical dots comprises a first surface configured to reflect the light rays from the light incident surface toward the grating strips, and
each of the plurality of grating strips comprises a first inclined surface configured to reflect the light rays emitted from the light exit surface toward the normal line of the light exit surface.

US Pat. No. 10,921,505

LIGHTING ARRANGEMENT WITH LIGHT GUIDE

Lumileds LLC, San Jose, ...

1. A lighting apparatus, comprising:a light guide formed as a transparent solid body, the transparent solid body extending between a first outer surface and a second outer surface that opposes the first outer surface;
a light source embedded in the light guide and configured to emit light into the light guide, the light guide and the light source defining a forward direction that extends from the light source parallel to the first outer surface;
a first reflector surface embedded in the light guide and facing towards the second outer surface, the first reflector surface being substantially parallel to the forward direction; and
a second reflector surface embedded in the light guide and facing towards the first outer surface,
the light source being arranged to emit the light between the first reflector surface and the second reflector surface,
the second reflector surface being disposed on a second reflector member,
at least a portion of the second reflector surface being substantially planar and angled with respect to the forward direction and terminating at an end of the second reflector member.

US Pat. No. 10,921,504

LIGHT GUIDE STRUCTURE AND LUMINOUS PAD HAVING THE SAME

1. A light guide structure, coupled to a transmitter, and comprising:a light guide strip, having a first position and a second position defined thereon, and the light guide strip comprising a light guide body and a light pipe sheathed on the light guide body;
a light source module, installed at the first position and coupled to the transmitter;
an electric object, installed at the second position; and
a transmission wire set, installed between the light pipe and light guide body whose inner and outer sides are configured to be opposite to each other, and the transmission wire set being coupled and electrically conducted between the electric object and the transmitter.

US Pat. No. 10,921,503

WAVELENGTH VARIABLE INTERFERENCE FILTER AND OPTICAL MODULE

Seiko Epson Corporation

1. A wavelength variable interference filter comprising:a first substrate;
a first reflection film on the first substrate;
a second substrate opposing the first substrate, the second substrate being configured with:
a movable member that is rectangular-shaped with a long side and a short side in a plan view, the long side being longer than the short side; and
a holding member surrounding an outer circumference of the movable member and holding the movable member; and
a second reflection film on the second substrate, the second reflection film facing the first reflection film,
wherein the holding member includes a long-side holding member formed along the long side, and the holding member includes a short-side holding member formed along the short side,
a first rigidity of the short-side holding member is lower than a second rigidity of the long-side holding member, the first rigidity and the second rigidity being defined in a thickness direction of the second substrate, and
wherein the second rigidity of the long-side holding member is progressively lowered in a first direction as a distance from a normal of the long side passing through a center of the movable member increases.

US Pat. No. 10,921,502

EYEWEAR ARTICLE WITH INTERFERENCE FILTER

Everix, Inc., Orlando, F...

1. An eyewear article for wearing outside of a human eye, the eyewear article comprising:a flexible interference filter film having a multi-layer structure and the interference filter film including at least one filter layer with a layer thickness dimensioned to reduce a transmission of light of a selected range of wavelengths by optical interference; and
a rigid optical lens, to which the interference filter film is affixed;
wherein the rigid optical lens is a first optical lens, further comprising a second rigid optical lens in a nested arrangement with the first optical lens, wherein a space between the first and second optical lenses forms a slot configured for receiving the interference filter film.

US Pat. No. 10,921,501

INFRARED-LIGHT TRANSMISSION FILTER AND DEVICES CONTAINING THE INFRARED-LIGHT TRANSMISSION FILTER

AGC Inc., Chiyoda-ku (JP...

1. An optical member comprising:a reflection-scattering unit, comprising:
a selective reflection unit that reflects light having a wavelength band which corresponds to at least a portion of the visible wavelength range and transmits light having a wavelength band which corresponds to at least a portion of the infrared region, and
a scattering unit that is provided at least on a first side of the selective reflection unit which comprises a diffractive structure configured to diffract the light having the wavelength band which corresponds to at least the portion of the visible wavelength range and scatters the light having the wavelength band which corresponds to at least the portion of the visible wavelength range, the first side being an incident side or an emission side of infrared light and being one predetermined side of sides to which visible light is incident;
wherein rectilinear transmittance for the light having the wavelength band which corresponds to at least the portion of the infrared region is equal to or greater than 75%, and
reflection-(0)th-diffraction efficiency for the light having the wavelength band which corresponds to at least the portion of the visible wavelength range is smaller than 30%.

US Pat. No. 10,921,500

OPTICAL ELEMENT, AND OPTICAL ELEMENT-EQUIPPED ARTICLE

TOPPAN PRINTING CO., LTD....

1. An optical element comprising:a concavo-convex structure forming layer that has a concavo-convex structure on one surface; and
a light-reflecting layer that covers at least part of a surface of the concavo-convex structure of the concavo-convex structure forming layer, wherein:
the concavo-convex structure forming layer comprises a unit group made up of a plurality of units whose concavo-convex structures are different from each other and that includes units having an identical concavo-convex structure;
each of the units has a flat portion and either a plurality of convexities or a plurality of concavities, with an upper surface of each convexity or a bottom surface of each concavity being substantially parallel to a surface of the flat portion;
the convexities or the concavities adjacent to each other have center-to-center distances that are not constant;
the convexities or the concavities have a constant height or depth; and
in the unit group, the units having an identical concavo-convex structure are not arrayed at a pitch of less than 300 ?m.

US Pat. No. 10,921,499

DISPLAY DEVICES AND METHODS FOR PROCESSING LIGHT

Facebook Technologies, LL...

1. An optical filter, comprising:a first filter region configured to cause distribution of light impinging on the first filter region in a first manner so that light from two emitters having a first distance between the two emitters with a gap between the two emitters appears to be emitted from two emitters positioned without a gap between the two emitters; and
a second filter region configured to cause distribution of light impinging on the second filter region in a second manner so that light from two emitters having a second distance that is different from the first distance between the two emitters with a gap between the two emitters appears to be emitted from two emitters positioned without a gap between the two emitters.

US Pat. No. 10,921,498

ROTATING ARCHED HELIOGRAPH FOR CONTINUOUS VISUAL SIGNALING, DRONE TRACKING AND BIRD DETERRENT

1. A rotating arched heliograph, comprising a body with two or more arched convex reflective mirror surfaces positioned on said body adjacently around a rotational axis each with an outward diverging arc of reflectivity along said rotational axis and at different angles relative to said rotational axis, wherein the sum of the arched convex reflective mirror surfaces intermittently provide an arc sum of reflectivity when rotated 360 degrees about said rotational axis;a bearing sleeve housed in said body with a coaxial shaft bolt that is mounted onto a base mount, wherein said bearing sleeve and said body rotates on said shaft bolt;
a non-Newtonian oil lubricant between said bearing sleeve and said shaft bolt on said body, wherein said non-Newtonian oil lubricant controls rotational speed of said rotating arched heliograph by quickly increasing drag between said shaft bolt and said bearing sleeve as a function of the rotational speed, which limits the speed and keeps it relatively constant.

US Pat. No. 10,921,497

PRISM FILM, BACKLIGHT MODULE AND DISPLAY DEVICE

BOE TECHNOLOGY GROUP CO.,...

1. A prism film comprising a substrate and a plurality of prisms on a surface of the substrate, each of the plurality of prisms having a triangular cross section and having a first optical surface, a second optical surface, and a third optical surface that are perpendicular to the triangular cross section,wherein the first optical surface is parallel to the surface of the substrate, wherein the first optical surface and the second optical surface form a first bottom angle,
wherein the first optical surface and the third optical surface form a second bottom angle,
wherein at least one of the first bottom angle and the second bottom angle of the plurality of prisms gradually changes in a direction parallel to the surface of the substrate,
wherein the plurality of prisms are arranged in parallel in a direction parallel to the surface of the substrate,
wherein the first bottom angle and the second bottom angle are configured such that light entering the prism from the second optical surface is reflected toward the first optical surface by the third optical surface, and then emerges from the first optical surface by being deflected toward a center of the substrate,
wherein the direction is a direction of a horizontal component of the light parallel to the surface of the substrate,
wherein the at least one of the first bottom angle and the second bottom angle of the plurality of prisms gradually increases in the direction, and
wherein the first bottom angle and the second bottom angle are configured to satisfy the following relationship:

wherein ?1 represents an angle, facing the substrate, between a direction of light incident on the prism and a normal to a surface of the substrate, n represents a refractive index of the prism, al represents the first bottom angle, ?3 indicates the second bottom angle, and ?8 represents an outgoing angle of light emerging from the first optical surface.

US Pat. No. 10,921,496

OPTICAL IMAGE LENS ASSEMBLY, IMAGING APPARATUS AND ELECTRONIC DEVICE

LARGAN PRECISION CO., LTD...

1. An optical image lens assembly, comprising:a plurality of optical lens elements comprising a plurality of plastic optical lens elements having refractive power and aspheric surfaces;
wherein the plastic optical lens elements are formed by an injection molding method and comprise at least one defined-wavelength light absorbing optical lens element, and the defined-wavelength light absorbing optical lens element comprises at least one defined-wavelength light absorbent;
wherein the defined-wavelength light absorbing optical lens element has an average transmittance larger than 50% in a green visible light region, and the defined-wavelength light absorbing optical lens element has an average transmittance smaller than 50% in a defined-wavelength region;
wherein a transmitted distance of a chief ray passing through the defined-wavelength light absorbing optical lens element between a central field of view to a field of view in 1.0 region in an imaging region of the optical image lens assembly is CP, a transmitted distance of the chief ray passing through the defined-wavelength light absorbing optical lens element in the central field of the optical image lens assembly is CP0, and the following condition is satisfied:
0.5?CP/CP0?2.0.

US Pat. No. 10,921,494

LIQUID OPTICAL MODULE

TDK TAIWAN CORP., Taoyua...

1. A liquid optical module, comprising:a liquid lens driving mechanism, including:
a fixed portion;
a movable portion, movably connecting the fixed portion; and
a driving assembly, configured to drive the movable portion to move relative to the fixed portion; and
a liquid lens assembly, including:
a liquid lens element, having an optical axis;
a fixing member, disposed on a first fixed portion surface of the fixed portion; and
a deforming member, disposed on a movable portion surface of the movable portion;
wherein the movable portion surface and the first fixed portion surface face the same direction, and when the movable portion is driven by the driving assembly to move relative to the fixed portion, the liquid lens element is deformed by the deforming member, causing the optical properties of the liquid lens element to change; and
wherein both the first fixed portion surface and the movable portion surface are not parallel to the optical axis.

US Pat. No. 10,921,493

VIRTUAL CURVED SURFACE DISPLAY PANEL, DISPLAY DEVICE AND DISPLAYING METHOD

BOE TECHNOLOGY GROUP CO.,...

1. A virtual curved surface display panel comprising:a display panel having a plurality of pixels; and
a plurality of imaging lens arrays disposed at a light emitting side of the display panel and arranged to image light from the plurality of pixels such that imaging trajectories for the plurality of pixels are located in a same virtual curved surface.

US Pat. No. 10,921,492

COATED ARTICLES WITH LIGHT-ALTERING FEATURES AND METHODS FOR THE PRODUCTION THEREOF

Corning Incorporated, Co...

1. A coated article comprising:a transparent substrate having a major surface, the major surface comprising a rough surface inducing light scattering; and
an optical coating disposed on the major surface of the transparent substrate and forming an air-side surface, the optical coating comprising one or more layers of material, the optical coating having a physical thickness of greater than 200 nm;
wherein the coated article exhibits a maximum hardness of about 10 GPa or greater as measured on the air-side surface by a Berkovich Indenter Hardness Test along an indentation depth of about 50 nm or greater,
wherein the major surface comprises a roughness of at least one of: (i) Rq of 100 nm or greater, and (ii) Ra of 100 nm or greater, and
further wherein the air-side surface comprises a roughness of at least one of: (i) Rq of 100 nm or greater, and (ii) Ra of 100 nm or greater.

US Pat. No. 10,921,491

METHOD OF MAKING A SURFACE WITH IMPROVED MECHANICAL AND OPTICAL PROPERTIES

1. Method for reducing reflectivity of optical articles comprising a substrate and a film on surface of said substratesaid film is a blanket film deposited on said substrate
characterized in that
said blanket film is post processed with 2 steps
where the said first step comprises dividing the continuous film by lines into cells with a honeycomb pattern
and the said second step comprises thermal treatment so each honeycomb cell of blanket film transforms into a structured film having near close packed array of near hemispherical protuberances.

US Pat. No. 10,921,490

ACTIVE ENERGY RAY-CURABLE COMPOSITION AND PLASTIC LENS

DIC Corporation, Tokyo (...

1. An active energy ray-curable composition, comprising a phenylbenzyl (meth)acrylate (A) and a bicarbazole compound (B) represented by the following structural formula (1):(wherein, X1 and X2 each independently represent a photopolymerizable functional group, a structural moiety having a photopolymerizable functional group, or a hydrogen atom, provided that at least one of X1 and X2 represents a photopolymerizable functional group or a structural moiety having a photopolymerizable functional group; and R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, a bromine atom, or a chlorine atom).

US Pat. No. 10,921,489

POLYMERIZABLE COMPOSITION FOR OPTICAL MATERIAL, OPTICAL MATERIAL OBTAINED FROM THE COMPOSITION, AND PLASTIC LENS

MITSUI CHEMICALS, INC., ...

1. A polymerizable composition for an optical material, comprising:a monomer mixture (A) including a polymerizable monomer having a (meth)acrylic group, where the monomer mixture (A) is a mixture of four monomers represented by Formulae (i), (ii), (iii), and (iv), respectively;
a photochromic compound (B) which is at least one selected from compounds represented by Formulae (1) and (2); and
an ultraviolet absorbing agent (C) which is at least one selected from compounds represented by Formulae (b) to (c),

in the formula (i), R represents a hydrogen atom or a methyl group, and a plurality of R's existing together may be identical to or different from each other, and m and n represent an integer of 0 to 20 and may be identical to or different from each other;

in the formula (ii), R represents a hydrogen atom or a methyl group, and a plurality of R's existing together may be identical to or different from each other, and p represents an integer of 0 to 20;

in the formula (iii), R represents a hydrogen atom or a methyl group, and q represents an integer of 0 to 20;PC-L-Chain  (1)
PC-L-Chain-L?-PC?  (2)
wherein in Formula (1) or (2), PC and PC? represent monovalent groups derived from compounds of Formulae (3) to (6), and PC and PC? may be identical to or different from each other,

in Formulae (3) to (6), R1 to R18 represent hydrogen, a halogen atom, a carboxyl group, an acetyl group, a formyl group, an optionally substituted C1 to C20 aliphatic group, an optionally substituted C3 to C20 alicyclic group, and an optionally substituted C6 to C20 aromatic organic group, and may be identical to or different from each other, the aliphatic group, the alicyclic group, or the aromatic organic group may contain an oxygen atom and a nitrogen atom, and any one group included in the compounds represented by Formulae (3) to (6) is bonded to L or L? which is a divalent organic group;
in Formula (1) or (2), L and L? each represent a divalent organic group including one or more selected from an oxyethylene chain, an oxypropylene chain, a (thio)ester group, and a (thio)amide group, and in Formula (1) or (2), Chain represents a monovalent or divalent organic group including one or more selected from a polysiloxane chain and a polyoxyalkylene chain;

in Formula (b), Z1 and Z2 may be identical to or different from each other, and represent a C1 to C6 alkyl group and a C1 to C6 alkoxy group;

in Formula (c), Z3 represents an optionally substituted C6 to C20 aromatic organic group and an optionally substituted C5 to C20 alicyclic group, and Z4 and Z5 may be identical to or different from each other and represent a C1 to C6 alkyl group and a C1 to C6 alkoxy group.

US Pat. No. 10,921,487

SYSTEMS AND METHODS FOR DETECTING A SITTING DUCK SCENARIO

SmartDrive Systems, Inc.,...

1. A system configured for detecting a sitting duck scenario of a vehicle on or near a road, the vehicle being operated by a vehicle operator, the system comprising:one or more hardware processors configured by machine-readable instructions to:
obtain output signals conveying information pertaining to the vehicle and to operation of the vehicle, wherein the information includes a current location of the vehicle;
determine a current speed of the vehicle, wherein the determination of the current speed is based on the output signals;
obtain road-specific information for one or more roads near the current location of the vehicle, wherein the road-specific information includes one or more of:
i) one or more speed limits pertaining to the one or more roads near the current location of the vehicle, and/or
ii) one or more types of geographical location information pertaining to the one or more roads;
make a first determination whether the current location of the vehicle is on or within a particular proximity of at least one road that has a speed limit exceeding 40 mph, wherein the first determination is based on the current location and the obtained road-specific information, and wherein the particular proximity is determined based on a distance threshold;
make a second determination whether the vehicle has been stationary continuously for at least a specified duration;
detect an occurrence of a particular vehicle event responsive to a combination of at least two determinations, wherein the at least two determinations include the first determination and the second determination;
responsive to detection of the occurrence of the particular vehicle event, generate one or more notifications regarding the particular vehicle event; and
provide the one or more notifications to one or more of the vehicle operator and/or a remote computing server.

US Pat. No. 10,921,486

INTEGRATED LOGGING TOOL

SCIENTIFIC DRILLING INTER...

1. An integrated logging tool comprising:an outer housing;
an insert, the insert positioned within the outer housing;
a gamma ray sensor positioned within the insert;
an acoustic sensor package, the acoustic sensor package positioned within a cutout, the cutout located circumferentially about a bore through the outer housing, the acoustic sensor package including:
an acoustic transmitter;
an acoustic isolator; and
one or more acoustic receivers.

US Pat. No. 10,921,485

ILLUMINATOR OBSTRUCTION DETECTION TO IDENTIFY AN OBSTRUCTION ON AN OPTICAL WINDOW

Ford Global Technologies,...

1. A system, comprising:an optical window;
an illuminator and a first light sensor deployed on a same side of the optical window;
a second light sensor on another side of the optical window; and
a computer including a processor and memory, the memory including instructions such that the processor is programmed to identify an obstruction on the optical window upon the first light sensor reporting first data from the illuminator that is above an expected threshold, the expected threshold based on second data from the second light sensor.

US Pat. No. 10,921,484

METHODS AND SYSTEMS FOR DETECTING MOTION CORRESPONDING TO A FIELD OF INTEREST

RELIANCE CORE CONSULTING,...

1. A system that performs motion analysis in a field of interest, wherein the system comprises:at least one gateway disposed proximal to the field of interest, wherein the at least one gateway is a two-way interface communicating with a remote monitoring center and a plurality of motion sensors;
the plurality of motion sensors disposed as a network in the field of interest, wherein each of the plurality of motion sensors comprises:
a photodetector array performing photodetection and generating digital information representing a sample;
a processor communicatively coupled to the photodetector array;
a wireless transmitter communicatively coupled to the processor, wherein the wireless transmitter transmits the digital information to at least one of a motion sensor of the plurality of motion sensors and the at least one gateway; and
a power source providing electrical energy to the processor and the wireless transmitter;
a plurality of video cameras disposed at a plurality of key locations in the field of interest, wherein each of the plurality of video cameras captures image sequences associated with a portion of the field of interest, wherein at least one of the plurality of video camera transmits a part of a corresponding image sequence to the remote monitoring center through the at least one gateway;
a plurality of detectors;
the plurality of detectors disposed in the field of interest;
each of the plurality of detectors detecting a microwave energy, speed, a metal, acoustic energy, displacement, velocity, a dangerous radioactive energy, a chemical and a mineral;
wherein the plurality of motion sensors are disposed on an entirety of an infrastructure;
wherein each of the plurality of motion sensors comprises an individual adhesive layer adhering to a portion of the infrastructure, wherein each of the plurality of motion sensors is characterized by at least one of a semilunar shape adhering on a surface and an oblong spherical shape not adhering on any surface in the field of interest;
wherein each of the plurality of motion sensors comprises a spectral filter passing at least one predetermined band of frequencies onto the photodetector array.

US Pat. No. 10,921,483

OPTOELECTRONIC SENSOR AND METHOD FOR DETECTING TRANSPARENT OBJECTS

SICK AG, Waldkirch (DE)

1. An optoelectronic sensor, for detecting transparent objects in a monitored zone, the optoelectronic sensor having:a light transmitter for transmitting a light signal, the light transmitter configured to transmit a tightly restricted light beam for a one-dimensional monitored zone,
a light receiver for generating a received signal from the received light signal,
an evaluation unit that is configured to evaluate the received signal and to generate an object determination signal that indicates whether a transparent object has been detected in the monitored zone, and
an output for outputting the object determination signal,
wherein the evaluation unit is further configured to recognize with respect to the received signal and to a piece of reference information whether a detected transparent object has an additional feature and to output a corresponding piece of additional feature information.

US Pat. No. 10,921,482

MID-INFRARED CARBON DIOXIDE SENSOR

SCHLUMBERGER TECHNOLOGY C...

1. A sensor for monitoring CO2 in a fluid, the sensor comprising:an internal reflection window configured in use to contact the fluid;
a mid-infrared light source configured to direct a beam of mid-infrared radiation into the window to provide for attenuated internal reflection of the beam of mid-infrared radiation at an interface between the window and the fluid;
a set of three narrow bandpass filters configured to filter the internally reflected mid-infrared radiation received from the window wherein:
a first narrow bandpass filter of the set of three narrow bandpass filters comprises a water filter and is configured to preferentially transmit mid-infrared radiation over a band of wavelengths corresponding to respective absorbance peaks of water;
a second narrow bandpass filter of the set of three narrow bandpass filters comprises an oil filter and is configured to preferentially transmit mid-infrared radiation over a band of wavelengths corresponding to respective absorbance peaks of oil; and
a third narrow bandpass filter of the set of three narrow bandpass filters comprises a CO2 filter and is configured to preferentially transmit mid-infrared radiation over a band of wavelengths corresponding to respective absorbance peaks of CO2;
one or more infrared detector(s) configured to detect filtered mid-infrared radiation transmitted through the set of three narrow bandpass filters; and
a processor arrangement, operably coupled to the one or more infrared detector(s) and configured to measure intensities of the detected mid-infrared radiation transmitted through the set of three narrow bandpass filters and determine therefrom an amount of CO2 in the fluid, notwithstanding whether the fluid contacting the window is a liquid water-based phase, a liquid oil-based phase, a mixture of liquid water- and liquid oil-based phases, or a gas phase,
wherein the sensor further comprises at least one of:
a heater configured to heat the window and clean a surface of the window in contact with the fluid; or
a pressure pulse arrangement configured to produce a pressure pulse in the fluid at the window and clean the surface of the window in contact with the fluid.

US Pat. No. 10,921,481

NITROGEN-VACANCY-BASED DOWNHOLE SENSING

Halliburton Energy Servic...

1. A system for making measurements in a wellbore, the system comprising:a microwave source positionable to produce microwaves inside a wellbore;
a light source positionable to produce interrogation light inside the wellbore;
a diamond including a nitrogen vacancy center (NV-center), the diamond being positionable in the wellbore to receive the microwaves and the interrogation light so that the NV-center produces excitation light that is detectable for indicating a value of a parameter inside the wellbore; and
a spectrometer adapted to receive the excitation light from inside the wellbore and produce a spectrum of the excitation light, the spectrum indicative of a value of a parameter inside the wellbore.

US Pat. No. 10,921,480

DOWNHOLE THREE-DIMENSIONAL SCANNING MAGNETIC RESONANCE IMAGING LOGGING INSTRUMENT, AND A PROBE, AN ANTENNA THEREOF

CHINA UNIVERSITY OF PETRO...

7. A downhole three-dimensional scanning nuclear magnetic resonance imaging logging instrument, comprising:a circuit structure and a probe of a downhole three-dimensional scanning nuclear magnetic resonance imaging logging instrument, comprising:
a magnet and an antenna, wherein the antenna comprising:
a radio frequency antenna, an orienting device and a rotating device; where
the radio frequency antenna is fixed on an outer surface of the orienting device, the orienting device is disposed on the magnet, and the rotating device is fixed on the magnet;
the rotating device is movably connected to the orienting device;
the rotating device is configured to drive the orienting device to rotate relative to the magnet, such that the radio frequency antenna on the orienting device is driven to rotate, and echo signals in different directions are acquired by the radio frequency antenna;
wherein the orienting device is a hollow cylinder, and the orienting device is sleeved on the magnet;
the rotating device comprises a housing, the housing is a hollow annular cylinder, and the rotating device is sleeved on the magnet, and an inner surface of the rotating device is fixedly connected to the magnet;
a first annular clamping slot is disposed on one end of the orienting device, and one end of the rotating device is locked into the first annular clamping slot;
the rotating device further comprises a built-in motor, a guiding belt and ball bearings;
the built-in motor is disposed inside the rotating device;
one end of the rotating device is provided with a groove, the guiding belt is laid in the groove, and the ball bearings are fixed on the guiding belt;
the built-in motor is configured to control a rotation of the guiding belt, such that the ball bearings are driven to rotate, and thereby the orienting device is driven to rotate relative to the magnet;
the circuit structure is electrically connected to the magnet in the probe of the downhole three-dimensional scanning nuclear magnetic resonance imaging logging instrument, and the circuit structure is electrically connected to the radio frequency antenna in the probe of the downhole three-dimensional scanning nuclear magnetic resonance imaging logging instrument;
the circuit structure is configure to acquire a directional angle to which the orienting device in the probe of the downhole three-dimensional scanning magnetic resonance imaging logging instrument is rotated, and echo signals acquired by the radio frequency antenna in the probe of the downhole three-dimensional scanning magnetic resonance imaging logging instrument, and correlate the directional angle with the echo signals according to a timing relationship.

US Pat. No. 10,921,479

MAGNETIC INDUCTION INTENSITY DETECTION DEVICE AND TERMINAL EQUIPMENT

BOE Technology Group Co.,...

1. A magnetic induction intensity detection device, comprising: a power supply, an electroluminescence component and a current detection component, wherein the electroluminescence component and the current detection component are connected in series;the power supply is configured to supply a voltage to the electroluminescence component so that the electroluminescence component generates a current;
the current detection component is configured to detect a current variation flowing through the electroluminescence component, and determine a current magnetic induction intensity according to the current variation and a correspondence between current variations and magnetic induction intensities.

US Pat. No. 10,921,478

METHOD AND TRANSDUCER FOR ACOUSTIC LOGGING

Halliburton Energy Servic...

1. An acoustic transducer, comprising a piezoelectric material comprising:an integral piezo body with a front face and a back face, wherein the back face is configured for establishing a ground connection;
grooves formed on the front face of the piezo body with a depth of at least two thirds of a height of the piezo body, wherein the grooves comprise a first groove that intersects with a second groove on the piezo body; and
a conductive plate attached across the front face of the piezo body to provide an electrical contact across the front face such that the entire front face may receive power through the conductive plate.

US Pat. No. 10,921,477

METHOD, APPARATUS, AND SYSTEM FOR ELIMINATING FREQUENCY DISPERSION EFFECT

PetroChina Company Limite...

1. A method for eliminating a frequency dispersion effect, comprising:testing a core sample to obtain logging band velocities and seismic band velocities under different pressures;
fitting a relationship between a stratum pressure and the logging band velocity using the logging band velocities under different pressures, and fitting a relationship between the stratum pressure and the seismic band velocity using the seismic band velocities under different pressures; and
eliminating a frequency dispersion effect in a target area using the relationship between the stratum pressure and the logging band velocity and the relationship between the stratum pressure and the seismic band velocity.

US Pat. No. 10,921,476

THERMAL MODULATED VIBRATING SENSING MODULE FOR GAS MOLECULAR WEIGHT DETECTION

Halliburton Energy Servic...

1. A method to determine averaged gas molecular weight of wellbore formation fluid, the method comprising:receiving a wellbore formation fluid into a sensing module having a first and second gas sensor each comprising a tube;
vibrating the tubes of the first and second gas sensors;
communicating the wellbore formation fluid into the vibrating tubes of the first and second gas sensors;
maintaining the first and second gas sensors under an isothermal condition;
acquiring vibrational measurements of the wellbore fluid flowing through the vibrating tubes of the first and second gas sensors while maintaining the isothermal condition, the vibrational measurements being temperature, pressure and density measurements of the wellbore fluid traveling through the vibrating tubes of the first and second gas sensors; and
utilizing the vibrational measurements to determine the averaged gas molecular weight of the wellbore fluid.

US Pat. No. 10,921,475

SYSTEMS AND METHODS OF COUPLING UNDERWATER VEHICLE WITH UNDERWATER SENSOR STORAGE CONTAINER

Magseis FF LLC, Houston,...

1. A system to interface underwater components in a seismic survey, comprising:an underwater vehicle located in an aqueous medium, the underwater vehicle comprising:
a storage compartment storing a plurality of seismic data acquisition units;
a propulsion system to move the underwater vehicle;
a passive protrusion extending from the underwater vehicle; and
an active protrusion extending from the underwater vehicle, the active protrusion comprising a mechanical coupling pin that moves from a first position to a second position to provide a locking mechanism;
a sensor storage container located in the aqueous medium and tethered, via a cable, to a marine vessel that travels with a velocity greater than zero, the storage container comprising:
a passive receptacle to receive the passive protrusion from the underwater vehicle; and
an active receptacle to receive the active protrusion and the mechanical coupling pin to provide the locking mechanism to couple the storage container with the underwater vehicle, wherein the sensor storage container and the underwater vehicle are coupled to one another above a seabed and below a surface of the aqueous medium; and
the active protrusion comprising a plate positioned on an engaging surface and a self-locking mechanism to automatically couple the mechanical coupling pin with the active receptacle;
the active receptacle configured to contact the engaging surface;
the mechanical coupling pin configured to press downward on the plate to secure the active receptacle against the engaging surface; and
the underwater vehicle configured to transfer at least one of the plurality of seismic data acquisition units from the storage compartment to the sensor storage container coupled with the underwater vehicle via the passive protrusion and the passive receptacle and the active protrusion and the active receptacle.

US Pat. No. 10,921,474

OBTAINING SEISMIC DATA IN AREAS COVERED WITH ICE

POLARCUS DMCC, Dubai (AE...

1. A seismic streamer for underwater towing at a towing speed in ice-free or wholly or partially icy water, the streamer comprising:birds spaced along the seismic streamer, the streamer including the birds and any other equipment connected to the seismic streamer has negative buoyancy, the birds have adjustable wings that can be set so that the birds during movement in the water apply an upward or downward force on the seismic streamer; and
buoyant bodies spaced along the seismic streamer configured for water to flow around the buoyant bodies during towing underwater, the buoyant bodies are connected to the seismic streamer by spacer elements, wherein the seismic streamer including the birds, the buoyant bodies with associated spacer elements and the any other equipment together have positive buoyancy so that when the streamer is stationary the seismic streamer rises towards the surface until the buoyant bodies reach the surface and the seismic streamer remains underwater by a length of the spacer elements to avoid damage to the seismic streamer from floating ice and avoid hydrostatic damage to the seismic streamer from sinking, and when the seismic streamer is moving through the water the birds submerge the buoyant bodies underwater, wherein the spacer elements are connected to the streamer close to or at the birds so that a force couple formed by forces of the buoyant bodies and forces of the birds is reduced and accompanying meandering of the seismic streamer is reduced.

US Pat. No. 10,921,473

METHOD AND SYSTEM FOR SEPARATING SEISMIC SOURCES IN MARINE SIMULTANEOUS SHOOTING ACQUISITION

PGS Geophysical AS, Oslo...

1. In a process for generating an image of geological structures of a subterranean formation using marine seismic techniques in which two or more sources are activated to generate acoustic energy that is reflected from the subterranean formation and is recorded by seismic sensors as blended seismic data, the improvement comprising:forming a blending matrix, each blending matrix element represents the time delay between activations of two of the two or more sources;
minimizing a residual between the blended seismic data and a product of predicted deblended seismic data models and the blending matrix to obtain a final updated residual and a final updated deblended seismic data;
adding the final updated residual to the final updated deblended seismic data model to obtain a deblended shot record, the deblended shot record recording acoustic energy reflected from the subterranean formation in response to activation of one of the two or more sources; and
using the deblended shot records to generate an image of the subterranean formation, thereby enhancing the image of subterranean earth layer layers.

US Pat. No. 10,921,472

DETERMING FIRST-BREAK POINTS IN SEISMIC DATA

Saudi Arabian Oil Company...

1. A computer-implemented method for determining first-break (FB) points, comprising:selecting, by a hardware processor, potential first-break (PFB) points based on seismic data obtained by plurality of seismic receivers in a geological location;
generating, by the hardware processor, a first plurality of FB lines based on the PFB points, wherein the each of the first plurality of FB lines is determined by using a random sample consensus (RANSAC) algorithm;
selecting, by the hardware processor, a first FB line among the plurality of FB lines;
filtering, by the hardware processor, the PFB points based on the first FB line;
generating, by the hardware processor, a second plurality of FB lines based on the filtered PFB points;
selecting, by the hardware processor, a second FB line among the second plurality of FB lines; and
determining, by the hardware processor, FB points based on the second FB line.

US Pat. No. 10,921,471

ENHANCED SURVEILLANCE OF SUBSURFACE OPERATION INTEGRITY USING MICROSEISMIC DATA

ExxonMobil Upstream Resea...

1. A method for monitoring operation integrity during hydrocarbon production or fluid injection operations using microseismic data, comprising:detecting microseismic waves in a subsurface area of operation using a seismic monitoring system;
receiving, from the seismic monitoring system, microseismic data representative of the microseismic waves;
processing, with a computer, the microseismic data to obtain a plurality of data panels corresponding to microseismic data measured over a predetermined time interval;
calculating with the computer, for each data panel, trigger values for data traces corresponding to sensor receivers of the microseismic monitoring system;
selecting with the computer, as a triggered data panel, at least one data panel that satisfies predetermined triggering criteria;
selecting with the computer, as a non-trivial data panel containing microseismic data representative of an event, at least one triggered data panel that satisfies spectral density criteria;
calculating, with the computer, a value for each of at least two event attributes of a plurality of event attributes of the event;
determining, with the computer, an event score based on the values of the plurality of event attributes; and
classifying, with the computer, the event into at least one event category of a plurality of event categories based on the event score.

US Pat. No. 10,921,470

INVERSION FOR TECTONIC STRESS

Schlumberger Technology C...

1. A method comprising:receiving data for fractures associated with a geologic environment, wherein the fractures have an unknown fracture type;
assigning different fracture types to different populations of the fractures prior to determining a fracture type for the fractures based on a characteristic of the fractures;
performing a stress inversion, based at least in part on a portion of the data representing one or more unknown fracture types and assignment of different mechanical fracture types to different populations of the fractures, to recover tectonic stress;
creating a subset of the fractures based on a similarity of the fractures to the fracture type assigned thereto, according to the recovered tectonic stress;
performing stress inversion using the fractures of the subset to recover a refined tectonic stress; and
outputting the refined tectonic stress.

US Pat. No. 10,921,469

RADIATION DETECTION DEVICE AND METHOD OF MANUFACTURING RADIATION DETECTION DEVICE

FUJIFILM Corporation, To...

1. A radiation detection device, comprising:a front surface member;
a rear surface member assembled with the front surface member;
a radiation detection panel that is disposed between the front surface member and the rear surface member and detects radiation incident from the front surface member side;
a sheet material that covers an outer peripheral surface of at least one of the front surface member or the rear surface member;
a packing, the sheet material being interposed between the packing and the front surface member or the rear surface member; and
a holding portion that is provided in at least one of the front surface member or the rear surface member and holds the packing in a pressed state.

US Pat. No. 10,921,468

MUON DETECTORS, SYSTEMS AND METHODS

National Security Technol...

1. A imaging method, comprising:arranging a muon detector comprising a trajectory determination system and a scintillator assembly capable of determining muon direction and trajectory with an object such that muons passing through or around the object are detected by the detector; and
creating an image of the object from detected muons;
wherein the muon detector is placed above the object to detect upward traveling muons;
wherein no component of the muon detector is placed below the object; and
wherein upward is defined as in a direction towards earth's surface and below is in a
direction away from the earth's surface.

US Pat. No. 10,921,467

DETECTOR ARRAY FOR IMAGING MODALITY

Analogic Corporation, Pe...

13. A computed tomography (CT) imaging modality comprising:a stator;
a rotor configured to rotate relative to the stator; and
a radiation source configured to emit radiation photons, the radiation source coupled to the rotor; and
a detector array coupled to the rotor and configured to detect the radiation photons, the detector array comprising:
a phosphor screen configured to convert the radiation photons into light energy; and
a photodiode array comprising a plurality of coplanar photodiodes configured to convert the light energy into electrical charge, the plurality of photodiodes comprising a first photodiode spaced apart from a second photodiode by a non-detection region, each of the photodiodes of the plurality of photodiodes directly contacting the phosphor screen.

US Pat. No. 10,921,466

RADIATION IMAGING APPARATUS AND RADIATION IMAGING SYSTEM

Canon Kabushiki Kaisha, ...

1. A radiation imaging apparatus comprising:a plurality of pixels which are arranged in an array in an imaging region and which are for obtaining a radiation image;
a first detection pixel including a first switch element and a second detection pixel including a second switch element and having sensitivity to detection of a radial ray which is different from sensitivity of the first detection pixel which are used to obtain information on irradiation with a radial ray on the imaging region including at least one of a start of irradiation with a radial ray, an end of irradiation with a radial ray, intensity of irradiation with a radial ray, and an amount of irradiation with a radial ray;
a first signal line which is disposed in the imaging region or adjacent to the imaging region and which receives a signal supplied from the first detection pixel through the first switch element in a conductive state;
a second signal line which receives a signal supplied from the second detection pixel through the second switch element in a conductive state;
a reading circuit configured to perform a first operation of reading first and second signals which appear in the first and second signal lines in a state in which the first and second switch elements are in a non-conductive state while the radiation imaging apparatus is irradiated with a radial ray and a second operation of reading third and fourth signals which appear in the first and second signal lines when the first and second switch elements are brought into a conductive state; and
an information processing circuit configured to perform a process of generating the information based on the first to fourth signals.

US Pat. No. 10,921,465

RADON MONITOR

Airthings AS, Oslo (NO)

1. A method of measuring a radon concentration or a radon exposure level comprising:placing a plurality of radon measurement instruments at locations, each radon measurement instrument being capable of outputting radon measurement data;
receiving radon measurement data from each of said plurality of radon measurement instruments;
combining said radon measurement data from said plurality of radon measurement instruments into a single data set; and
calculating a radon concentration or radon exposure value from said single data set;
wherein an instrument, which is one of the plurality of radon measurement instruments, comprises one or more accelerometers or motion sensors to detect movement of the instrument and wherein if movement is detected, data from the instrument is excluded from said single data set.

US Pat. No. 10,921,464

SATELLITE NAVIGATION RECEIVER FOR A RAPIDLY ROTATING OBJECT WITH IMPROVED RESISTANCE TO JAMMING

Interstate Electronics Co...

1. An apparatus configured to be mounted in a launchable projectile configured to spin after launch, the apparatus comprising:an adaptive sideband filter disposed in a signal path between one or more correlators and a space vehicle (SV) power modulation tracker to provide post-correlation processing,
the adaptive sideband filter configured to adapt to changing sideband frequencies and to filter:
sidebands, and
a center frequency
of a correlated in-phase signal and a correlated quadrature-phase signal to generate a filtered correlated in-phase output signal and a filtered correlated quadrature-phase output signal; and
the SV power modulation tracker, wherein the SV power modulation tracker is configured to:
while the projectile is spinning after launch, determine a rotational orientation of the projectile while the projectile is spinning based at least partly on at least the filtered correlated in-phase signal or the filtered correlated quadrature-phase signal, or both the filtered correlated in-phase signal and the filtered correlated quadrature-phase signal, and
provide the determined angular orientation of the spinning projectile to a flight control system configured to control one or more projectile fins so as to control the flight path of the projectile.

US Pat. No. 10,921,463

SYSTEMS AND METHODS FOR VEHICLE ORIENTATION DETERMINATION

Christopher Davis William...

1. A system for determining a vehicle orientation, comprising:a plurality of first sensors, the plurality of first sensors mounted to a body of the vehicle and receiving orientation information, the plurality of first sensors being positioned at different locations on the body;
a second sensor receiving information indicative of a speed of the vehicle; and
a control system having a memory and a processor, the memory including instructions that, when executed by the processor, cause the control system to:
receive information indicative of the speed of the vehicle from the second sensor;
determine at least a threshold number of first sensors of the plurality of first sensors is providing orientation information; and
determine a property corresponding to the vehicle orientation, based at least in part on the orientation information from the threshold number of first sensors and the information indicative of the speed of the vehicle.

US Pat. No. 10,921,462

INERTIAL NAVIGATION STABILIZATION VIA BAROMETER

Apple Inc., Cupertino, C...

1. A method, comprising:receiving, by a device, a first and second set of signals, each of the first and second set of signals corresponding to location data and each of the first and second set of signals being received based on a sampling interval; and
for each sampling period of several sampling periods defined by the sampling interval and occurring after receiving the first and second set of signals,
obtaining first sensor data which corresponds to motion of the device during the sampling period,
obtaining second sensor data which corresponds to atmospheric pressure at a beginning of the sampling period and at an end of the sampling period,
calculating a change in altitude of the device, based on a difference in the atmospheric pressure as sampled at the beginning of the sampling period and at the end of the sampling period, and
estimating a state of the device based on the first sensor data and the change in altitude of the device and independent of location data corresponding to the first and second set of signals during the sampling period.

US Pat. No. 10,921,461

METHOD AND APPARATUS FOR DETERMINING UNMANNED VEHICLE POSITIONING ACCURACY

Baidu Online Network Tech...

1. A method for determining an unmanned vehicle positioning accuracy, comprising:acquiring positioning coordinate information obtained by real-time positioning based on sensing positioning data of the unmanned vehicle;
recognizing an obstacle included in laser point cloud data of the unmanned vehicle, and determining relative position information between the unmanned vehicle and the obstacle at each moment;
determining position information of the unmanned vehicle at each moment based on global positioning system (GPS) data of the unmanned vehicle, and determining movement information of the unmanned vehicle at each moment based on inertia measurement unit (IMU) data of the unmanned vehicle, wherein the determined movement information of the unmanned vehicle includes at least one of: acceleration information, direction information and speed information;
determining a movement error of the unmanned vehicle based on the position information and the determined movement information of the unmanned vehicle at each moment;
determining an observation error of the IMU based on the relative position information between the unmanned vehicle and the obstacle and the determined movement information of the unmanned vehicle at each moment;
determining the real coordinate information of the unmanned vehicle at each moment based on the movement error of the unmanned vehicle and the observation error of the IMU at each moment and the position information of the unmanned vehicle at each moment; and
matching the acquired positioning coordinate information with the determined real coordinate information, and determining the positioning accuracy of the unmanned vehicle based on a matching result.

US Pat. No. 10,921,460

POSITION ESTIMATING APPARATUS AND METHOD

Samsung Electronics Co., ...

1. A position estimating method performed by a processor, the method comprising:estimating a position of a target based on main sensing data acquired from a main sensor;
calculating a difference between information obtained from the main sensing data and information obtained from auxiliary sensing data acquired from an auxiliary sensor;
calculating a reliability score of the auxiliary sensing databased on the calculated difference;
determining the auxiliary sensing data to be reliable in response to the calculated reliability score being greater than a threshold score; and
determining the position of the target based on the main sensing data and the auxiliary sensing data, in response to determining the auxiliary sensing data to be reliable,
wherein the auxiliary sensor has a lower reliability and a higher accuracy in comparison to the main sensor.

US Pat. No. 10,921,459

METHOD AND SYSTEM FOR DEMODULATING AND TRACKING OF CSK-MODULATED SIGNALS

Topcon Positioning System...

1. A Global Navigation Satellite System (GNSS) navigation receiver comprising:an analog-to-digital converter (ADC) receiving a CSK-modulated GNSS signal from an antenna;
a first array of first type correlators with a maximum selecting unit selecting an output from the first type correlators, and with a common control of all the first type correlators in code delay, carrier phase and carrier frequency;
a second array of second type correlators with individual control in code delay of each second type correlator or each sub-group of second type correlators and with common control of all second type correlators in carrier phase and carrier frequency; and
a processor;
wherein
the ADC outputs a digital version of the CSK-modulated GNSS signal to the first and second arrays,
an output of the maximum selecting unit is provided to the processor,
outputs of the second type correlators are connected to the processor,
a first output of the processor is the common control of the first array to control the code delay, the carrier phase and the carrier frequency,
a second output of the processor is connected to the common control of the second array to control the carrier phase and the carrier frequency,
a set of third outputs of the processor is connected to the individual control of the second type correlators, such that a single individual control controls the code delay of either one correlator or a group of correlators of the second type correlators,
wherein the processor also outputs an improved position and improved velocity using corrections based on the CSK-modulated GNSS signal.

US Pat. No. 10,921,458

APPARATUS AND METHODS FOR INTERFERENCE MITIGATION BY SATELLITE NETWORKS

Hughes Network Systems, L...

1. A method for interference mitigation, comprising:determining, at a satellite terminal within a coverage area of a multiple carrier frequency transmitter, an interference metric for an outbound carrier frequency among a plurality of outbound carrier frequencies;
communicating the interference metric from the satellite terminal to a system controller;
developing, by the system controller, an interference map based at least in part on the interference metric;
assigning, by the system controller, the satellite terminal a respective outbound carrier frequency among the plurality of outbound carrier frequencies, based at least in part on the interference map;
establishing or adjusting a frequency plan for assigning each of the plurality of outbound carrier frequencies, based at least in part on the interference map; and
determining, at the satellite terminal, whether all of the plurality of outbound carrier frequencies have interference and, in response to determining that all of the plurality of outbound carrier frequencies have interference, sending a flag from the satellite terminal to the system controller, the flag indicating all of the outbound carrier frequencies have interference.

US Pat. No. 10,921,457

METHOD AND DEVICE FOR DETECTING A FAULT OF A BAROMETRIC PRESSURE MEASURING SYSTEM ARRANGED ABOARD A FLYING DEVICE

1. A method of determining a fault of a barometric pressure measuring system arranged aboard a flying device, the barometric pressure measuring system configured to determine a static pressure pAC(t) and/or a barometric altitude zAC(t), the method comprising:determining a position POSGNSS(t) and an altitude zGNSS(t) of the flying device in a geodetic reference system at a point in time t using a satellite navigation system GNSS arranged aboard a flying device;
determining a geopotential altitude zAN/PROG(t) related to the static pressure pAC(t) for the position POSGNSS(t) in provided weather analysis data ANDAT or in provided weather prognosis data PROGDAT of a numerical weather prediction model (NWP); and/or
determining a static pressure pAN/PROG(t) related to the altitude zGNSS(t) for the position POSGNSS(t) in provided weather analysis data ANDAT or in provided weather prognosis data PROGDAT of a numerical weather prediction model (NWP);
determining an altitude deviation ?z(t)=zGNSS(t)?zAN/PROG(t) and/or determining a pressure deviation ?p(t)=pAC(t)?pAN/PROG(t);
determining an altitude deviation ?z* averaged over a period of time ?t from ?z(t)=zGNSS(t)?zAN/PROG(t) and/or determining a pressure deviation ?p* averaged over a period of time ?t from ?p(t)=pAC(t)?pAN/PROG(t); and
generating a warning signal if a fault of the barometric pressure measuring system is detected, wherein the fault is deemed detected if an absolute value of the averaged altitude deviation |?z*| is greater than or equal to a specified threshold G1, or if an absolute value of the averaged pressure deviation |?p*| is greater than or equal to a specified threshold G2.

US Pat. No. 10,921,456

METHOD AND SYSTEM OF REAL-TIME TRANSMISSION AND DEMODULATION OF BEIDOU SATELLITE NAVIGATION SIGNALS

WUHAN UNIVERSITY, Wuhan ...

1. A method, comprising:S1: constructing small and medium-scale or large-scale or ultra-large-scale parallel signal transmission branches in a navigation satellite transmitter baseband chip field-programmable gate array (FPGA) to satisfy quasi-real-time or real-time transmission of subsequently grouped satellite navigation message, wherein the number of small and medium-scale parallel signal transmission branches is smaller than 100, the number of large-scale parallel signal transmission branches is not smaller than 100, and the number of ultra-large-scale parallel signal transmission branches is not smaller than 1000;
S2: generating satellite navigation messages according to a given structure or constructing the satellite navigation messages with same or different navigation information combinations as a data block with a given length through injection of a ground injection station or in a navigation satellite transmitter digital signal processor (DSP) chip, and grouping the satellite navigation messages in a set length unit or regrouping fragmented satellite navigation messages or packing the grouped messages based on a group sequence number, time to live and message length, to form the grouped messages into a matrix, wherein performing grouping based on the satellite navigation message structure comprises performing grouping based on a super-frame or a main frame or a sub-frame or a word or a data block, or a bit number with a set length;
S3: sequentially sending the grouped or group-coded satellite navigation messages in rows or columns or based on a given time slot, into the parallel signal transmission branches respectively;
S4: performing a hybrid operation with single state variables or multi-state variables or a function containing different parameters by taking a non-linear strength as a weight, and forming a real part by designing one group of non-linear functions with different diffusion coefficients as weights; performing a hybrid operation with another type of single state variable or multi-state variables or a function containing different parameters by taking a non-linear strength as a weight, and forming an imaginary part by designing another group of non-linear functions with different diffusion coefficients as weights; driving the interactions of the non-linear functions based on an action value obtained by performing a hybrid operation with tap values of the correlation register, and constructing a non-linear function driven complex shift pseudo-random code generator with an action value obtained by performing the hybrid operation with the non-linear function action values as a feedback end or constructing the linear shift pseudo-code generator with at least two linear shift registers, wherein the real part and the imaginary part of the correlation register state value of the non-linear function driven complex shift pseudo-random code generator form a real part sub-pseudo random code generator and an imaginary part sub-pseudo random code generator respectively;
S5: performing parameter setting for a series and a generated code length of the non-linear function driven complex shift pseudo-random code generator;
S6: initializing the state value of the non-linear function driven complex shift pseudo-random code generator with same or different complex data;
S7: outputting a pseudo-random number through one part of tap combinations of the real part and the imaginary part of the correlation register state value of the non-linear function driven complex shift pseudo-random code generator, obtaining a navigation satellite ranging code by a sorting method, binarization, and modulo-2 sum, and taking the code as the first or non-first parallel signal transmission branch-dedicated sub-ranging code, wherein the branch signal is used to detect existence of the navigation satellite navigation signal in an intercepted baseband satellite navigation signals;
S8: outputting a pseudo-random number through another part of tap combinations of the real part and the imaginary part of the correlation register state value of the non-linear function driven complex shift pseudo-random code generator, and obtaining public sub-ranging codes of all navigation satellite parallel signal transmission branches, which are referred to as navigation satellite public sub-ranging codes, by the sorting method, the binarization and the modulo-2 sum, wherein a sum of the number of all navigation satellite ranging codes and the number of all navigation satellite public sub-ranging codes is not greater than the total number of tap combinations of the real parts and the imaginary parts of all correlation registers state values of the non-linear function driven complex shift pseudo-random code generator, and the navigation satellite public sub-ranging codes are mutually correlated or uncorrelated or orthogonal or non-orthogonal or orthogonal in one part and non-orthogonal in another part;
S9: obtaining remaining parallel signal transmission branch-dedicated sub-ranging codes of the navigation satellite which are referred to as navigation satellite-dedicated sub-ranging codes, by performing modulo-2 sum for the navigation satellite ranging codes and the navigation satellite public sub-ranging codes respectively, wherein these navigation satellite-dedicated sub-ranging codes have good cross correlation, and are stored in a file or a data buffer zone to satisfy a requirement of performing real-time spectrum spreading for the navigation message of each parallel signal transmission branch, and the navigation satellite ranging codes, navigation satellite public sub-ranging codes or the navigation satellite dedicated sub-ranging codes are synchronously driven by a same clock frequency-divided from a high precision and high stability atomic clock;
S10: generating navigation satellite-dedicated sub-ranging codes in real time or obtaining navigation satellite-dedicated sub-ranging codes through the file or the data buffer zone and performing spectrum spreading for the grouped navigation messages in the parallel signal transmission branch respectively, or performing spectrum spreading for the grouped navigation messages with different navigation satellite dedicate sub-ranging codes so as to form single-channel signals after superimposition and allow the signals to be transmitted in the same parallel signal transmission branch, wherein the navigation satellite-dedicated sub-ranging codes are obtained in one of the manners;
S11: modulating spread spectrum signals in the parallel signal transmission branches respectively by using same carriers or complex carriers with different frequency offsets or sub-carriers or complex sub-carriers with different orthogonal phases and different frequency offsets respectively, wherein one of the carriers is taken for modulation;
S12: performing power equalization by adjusting gain factors of navigation satellite-dedicated sub-ranging codes of different branches to reasonably allocate signal powers of different branches, and superimposing or combining carrier-modulated signals of all parallel signal transmission branches or with carrier signals of satellite navigation signals of other branches into single-channel signals, wherein less interference occurs between these carrier signals because the navigation satellite-dedicated sub-ranging codes of different parallel signal transmission branches are uncorrelated with each other;
S13: forming a baseband satellite navigation signal by adding Gaussian white noise or another noise to the superimposed or combined single-channel signal;
S14: transmitting the baseband satellite navigation signal by a single antenna in the form of multi-channel parallel superimposition after radiofrequency modulation and power amplification;
S15: receiving, by a user receiver, the baseband satellite navigation signal obtained by low-noise amplifier and radiofrequency transformation, through single-antenna single-channel or each sub-channel contained in the single-antenna single-channel or single-antenna multi-channel or each sub-channel contained in the single-antenna multi-channel, where a channel implementation manner is mr×nr, wherein mr refers to the number of channels, nr refers to the number of sub-channels contained in each channel respectively, and each sub-channel sequentially performs real-time demodulation for the navigation signal of the parallel signal transmission branch in a sequence number range given by a satellite transmitter respectively, or multi-antenna single-channel or each sub-channel contained in the multi-antenna single-channel or multi-antenna multi-channel or each sub-channel contained in the multi-antenna multi-channel, wherein the single-antenna single-channel or each sub-channel contained in the single-antenna single-channel refers to that each antenna is only connected to one signal processing channel, and the channel or each sub-channel contained in the channel is in charge of receiving all satellite navigation signals; the single-antenna multi-channel or each sub-channel contained in the single-antenna multi-channel refers to that each antenna is connected to not less than two signal processing channels, and each channel or each sub-channel contained in the channel is in charge of receiving corresponding satellite navigation signals; the multi-antenna single-channel or each sub-channel contained in the multi-antenna single-channel refers to that each antenna is connected to one signal processing channel respectively; the multi-antenna multi-channel or each sub-channel contained in the multi-antenna multi-channel refers to that each antenna is connected to not less than two signal processing channels respectively, and each channel or each sub-channel contained in the channel is in charge of receiving the corresponding satellite navigation signals, the channel and the sub-channels contained in the channel are implemented in the user receiver baseband chip; the number of the signal processing channels or different sub-channels contained in the channel is sufficient to ensure the real-time demodulation of the received satellite navigation signals; since each channel demodulates the navigation signals of not less than one navigation satellite respectively in the same manner, a process of performing real time demodulation for the navigation signals of one navigation satellite with nr sub-channels of one channel will be described below;
S16: selecting a sub-channel number ir as (1?ir?nr) and a sequence number it of a parallel signal transmission branch of the satellite transmitter corresponding to the sub-channel being equal to a starting sequence number of the parallel signal transmission branch of the transmitter corresponding to the sub-channel of the channel;
S17: intercepting or intercepting, in a given time slot, a segment of the baseband satellite navigation signal;
S18: generating a local carrier or a complex carrier;
S19: obtaining a carrier-removed signal by performing carrier removal for the navigation signal obtained in S17 by a Doppler frequency shift carrier matching method;
S20: generating a navigation satellite-dedicated sub-ranging code of the parallel signal transmission branch in real time or obtaining the navigation satellite-dedicated sub-ranging code of the parallel signal transmission branch through the file or the data buffer zone, and firstly eliminating cross interface of the dedicated sub-ranging codes by using a multi-user detection technology, and then binarizing the carrier-removed signal by the sorting method to perform relevant processing by an FFT-based cyclic correlation method; wherein, when ir=1 and a correlation peak exists, it indicates that the navigation satellite signal exists in the received signals, the navigation message is demodulated with the carrier-removed signal of the baseband satellite navigation signals received from the branch according to the position of correlation peak; when ir>1 and the correlation peak exists, the navigation message is demodulated from the carrier-removed signal of the baseband satellite navigation signals received by the branch according to the position of the correlation peak, and S21 is performed; otherwise, S17 is performed;
S21: it=it+1, when it is smaller than or equal to a cut-off sequence number of the parallel signal transmission branch of the satellite transmitter corresponding to the sub-channel of the channel, performing S17; otherwise, performing S22;
S22: changing the grouped navigation messages or unpacked grouped navigation messages obtained from the parallel signal transmission branches of different sub-channels from parallel transmission to serial transmission and obtaining complete navigation messages of one navigation satellite through the channel;
S23: obtaining visual navigation messages of navigation satellites through different channels respectively according to blocks S15-S22, and performing positioning solution for the navigation messages of four selected navigation satellites by using a microprocessor containing no less than one core to realize rapid navigation positioning; and
S24: ending the process.

US Pat. No. 10,921,455

EFFICIENT AND SCALABLE THREE-DIMENSIONAL POINT CLOUD SEGMENTATION FOR NAVIGATION IN AUTONOMOUS VEHICLES

APEX.AI, INC., Palo Alto...

1. A method comprising using at least one hardware processor to:receive data from one or more sensors;
generate a three-dimensional point cloud from the data received from the one or more sensors;
segment the three-dimensional point cloud using a clustering algorithm by
adding points from the three-dimensional point cloud to a spatial hash, wherein adding points from the three-dimensional point cloud to the spatial hash comprises, for each point in the three-dimensional point cloud,
quantizing coordinates of the point,
computing a bin identifier for the point,
generating a node that represents the point,
determining whether or not a list of nodes is associated with the computed bin identifier in an associative mapping,
when a list of nodes is determined to be associated with the computed bin identifier in the associative mapping, adding the generated node to the list of nodes associated with the computed bin identifier, and,
when a list of nodes is not determined to be associated with the computed bin identifier in the associative mapping, adding a new list to the associative mapping in association with the computed bin identifier, and adding the generated node to the new list,
for each unseen point in the three-dimensional point cloud,
generating a new cluster,
adding the unseen point to the cluster,
marking the unseen point as seen, and,
for each point that is added to the cluster,
setting the point as a reference point,
computing a reference threshold metric for the reference point,
identifying all unseen neighbor points to the reference point in the spatial hash, based on the reference threshold metric, and,
for each identified unseen neighbor point to the reference point,
 marking the unseen neighbor point as seen,
 computing a neighbor threshold metric for the neighbor point,
 determining whether or not the neighbor point should be added to the cluster based on the neighbor threshold metric, and,
 when the neighbor point is determined to be added to the cluster, adding the neighbor point to the cluster, and,
when a size of the cluster reaches a threshold, adding the cluster to a cluster list,
identify one or more objects based on the cluster list; and
control one or more autonomous systems based on the identified one or more objects.

US Pat. No. 10,921,454

SYSTEM AND METHOD FOR DETERMINING A DISTANCE TO AN OBJECT

XENOMATIX NV, Leuven (BE...

1. A system for determining a distance to an object comprising:a solid-state light source arranged for projecting a pattern of discrete spots of laser light towards said object in a periodically repeated sequence of pulses;
a detector comprising a plurality of picture elements, said detector being configured for detecting light representing said pattern of discrete spots as reflected by said object in synchronization with said sequence of pulses; and
processing means configured to calculate said distance to said object as a function of exposure values generated by said picture elements in response to said detected light;
wherein said picture elements are provided in CMOS technology;
wherein each of said picture elements comprises at least two charge wells with each a separate transfer gate, and an anti-blooming mechanism;
wherein said picture elements are configured to generate said exposure values by accumulating, for all of the pulses of said sequence, a first amount of electrical charge representative of any or all of a first amount of light reflected by said object, ambient light, and noise during a first predetermined time window and a second electrical charge representative of any or all of a second amount of light reflected by said object, the ambient light, and the noise during a second predetermined time window, said second predetermined time window occurring immediately after said first predetermined time window,
wherein said solid-state light source is in its “ON” state during the first predetermined time window and in its “OFF” state during said second predetermined time window,
wherein said first predetermined time window and said second predetermined time window are of substantially equal duration and occur back-to-back,
wherein said detecting of said first amount of light and said detecting of said second amount of light occurs at respective ones of said at least two charge storage wells,
wherein if said object is present at a distance corresponding to a round-trip time-of-flight delay exceeding the duration of said first predetermined time window, the storage well accumulating said first amount of electrical charge accumulates the ambient light and the noise contributions only, wherein the processing means is configured to calculate said distance to said object at least based on the first amount of electrical charge and the second amount of electrical charge accumulated only during the first predetermined time window and the second predetermined time window.

US Pat. No. 10,921,453

LIQUID CRYSTAL ON SILICON (LCOS) LIDAR SCANNER WITH MULTIPLE LIGHT SOURCES

HUAWEI TECHNOLOGIES CO., ...

1. A Light Detection and Ranging (LIDAR) apparatus comprising:a plurality of spaced-apart light sources disposed in a generally planar arrangement according to a two-dimensional spatial pattern and which is generally perpendicular to a direction of propagation of light emitted by the light sources, each of the plurality of light sources operating at a same wavelength;
a Liquid Crystal on Silicon (LCOS) device configured to receive light from the plurality of light sources and controllably redirect said light toward a target region;
a plurality of spaced-apart light detectors disposed in a corresponding generally linear or planar arrangement which is according to the spatial pattern and which is generally perpendicular to a direction of propagation of reflected light received by the light detectors, the light detectors configured to detect the reflected light, said reflected light due to reflection, by objects in the target region, of said light emitted by the light sources, said reflected light being redirected by the LCOS device,
wherein each one of the plurality of light sources corresponds to one of the plurality of light detectors in a same relative position in the spatial pattern according to a one-to-one relationship, and wherein the apparatus is configured to convey LIDAR light from each one of the plurality of light sources to its corresponding one of the plurality of light detectors according to the one-to-one relationship; and
a controller operatively coupled to the plurality of light sources and to the LCOS device for control thereof,
wherein optical reflective or transmissive properties of the LCOS device are controllable over time by the controller to cause the LCOS device to controllably redirect said reflected light toward the light detectors; and
wherein the controller is configured to set the LCOS device to a particular optical configuration, and while the LCOS device is set to said particular optical configuration, to sequentially activate different ones or sets of the plurality of light sources and monitor different corresponding ones or sets of the plurality of light detectors.

US Pat. No. 10,921,452

LIDAR SYSTEM

1. A light detection and ranging (LIDAR) system, comprising:a transceiver configured to:
transmit, through a transmission waveguide, a transmit signal that is generated based on a beam provided from a laser source; and
receive, through a receiving waveguide spaced from the transmission waveguide by a separation, a return signal from an object responsive to the transmit signal; and
one or more scanning optics configured to:
receive the transmit signal at a first angle; and
provide the transmit signal from the transceiver to an environment at a scan rate over an angle range defined by a second angle and a third angle including by outputting the transmit signal at the second angle responsive to receiving the transmit angle at the first angle and outputting the transmit signal at the third angle responsive to receiving the transmit angle at the first angle.

US Pat. No. 10,921,451

LASER DEVICE

Funai Electric Co., LTD.,...

1. A laser device, comprising:a light source that emits light;
a first reflector that reflects the light toward a measurement target area;
a second reflector that reflects the light reflected from the measurement target area;
a light receiver that receives the light reflected by the second reflector;
a driver that swings the first and the second reflectors in an angular range corresponding to the measurement target area;
a calculator that:
stores first information about the light reflected by the first reflector toward the measurement target area and second information about the light received by the light receiver; and
measures movement speed and movement direction of a target reflecting the light from the first reflector based on the first and the second information; and
a controller that performs gait analysis based on the first and the second information, wherein
the first reflector and the second reflector swing integrally.

US Pat. No. 10,921,450

LADAR SYSTEM AND METHOD WITH FREQUENCY DOMAIN SHUTTERING

AEYE, INC., Belleville, ...

1. A ladar system comprising:a sensor that senses background light levels;
a ladar transmitter that transmits ladar pulses toward a plurality of range points;
a ladar receiver, wherein the ladar receiver comprises a photo receiver, wherein the photo receiver receives ladar pulse returns from the range points along with background light; and
a control circuit that (1) measures the sensed background light levels and (2) provides frequency domain shuttering with respect to the photo receiver based on the measured background light levels and removes portions of the background light from signal processing for a detection of the ladar pulse returns; and
wherein the control circuit determines a bandwidth for the frequency domain shuttering by computing a Fourier integral of a ladar pulse and identifying frequencies which contain pulse intensity below a threshold.

US Pat. No. 10,921,449

DYNAMIC EXPANSION OF A DISTANCE MEASURING DEVICE HAVING A VARIABLE OPTICAL ATTENUATION ELEMENT IN THE TRANSMITTING CHANNEL

HEXAGON TECHNOLOGY GENTER...

1. A measuring device for scanning uncooperative objects, the measuring device comprising:an electronic laser distance measuring module including:
an optical transmitting channel having a transmitting unit for generating laser measuring radiation,
an attenuation unit in the optical transmitting channel for attenuating the laser measuring radiation generated by the transmitting unit, and
an optical receiving channel having a receiving unit for reflected laser measuring radiation,
wherein the beam guiding in the electronic laser distance measuring module is implemented by means of a fiber optic,
wherein, during the scanning, the transmitting unit progressively generates modulated signals having a modulation rate greater than 100 kHz,
wherein an electrically controllable setting of at least two different attenuation factors is provided,
wherein the attenuation unit is continuously activatable from transmitted signal to transmitted signal, wherein during the scanning, setting of the attenuation unit is performed using different attenuation factors in such a way that the receiving unit is supplied a received signal having an amplitude in a linear dynamic range of the receiving unit, based on a single immediately preceding received signal pulse or based on multiple successive immediately preceding received signal pulses,
wherein the attenuation unit is designed such that the attenuation is performed by means of an optically active crystal based on an effect from at least one of the groups consisting of:
electro-optical effects,
acousto-optical effects, and
magneto-optical effects, and
wherein the attenuation unit has a functional relationship between attenuation factor and electrical activation, wherein the functional relationship is known over a temperature range between ?20° C. and 50° C.

US Pat. No. 10,921,448

OPTICAL DISTANCE MEASURING SYSTEM

HAMAMATSU PHOTONICS K.K.,...

1. An optical system for measuring a distance to an object furnished with a plane mirror, comprising:a coherent light source projecting a laser beam toward the plane mirror along an optical axis;
an optical element arranged on the optical axis, the optical element splitting the incident laser beam into two laser beams whose propagation directions are at a given angle between each other and spreading out the incident laser beam into a sheet of light whose orientation is perpendicular to a plane created by the propagation directions of the two laser beams; and
a one-dimensional photosensor configured to detect an incident light intensity distribution,
wherein the split two laser beams are propagating from the optical element to the plane mirror and the two laser beams reflected by the plane mirror are propagating to the one-dimensional photosensor, and
wherein the one-dimensional photosensor detects the incident light intensity distribution of the reflected two laser beams with two local maxima, whose position can be employed to calculate the distance of the plane mirror and its momentary tilt angle.

US Pat. No. 10,921,447

CONTROL CIRCUIT OF LIGHT EMITTING AND RECEIVING DEVICE

ROHM CO., LTD., Kyoto (J...

1. A control circuit of a light emitting and receiving device including a light emitting element, a first light receiving element, and a second light receiving element, comprising:a reference signal generator structured to generate a reference signal including a component having a predetermined reference frequency;
a drive circuit structured to supply a drive signal to the light emitting element so that a feedback signal corresponding to an output of the first light receiving element matches the reference signal; and
a detection circuit structured to detect the output of the second light receiving element by correlating with the component having the reference frequency;
a first detection circuit including a first transimpedance amplifier structured to convert the output of the first light receiving element into the feedback signal which is a voltage signal; and
a second detection circuit including a second transimpedance amplifier structured to convert an output current of the second light receiving element into a voltage signal,
wherein the detection circuit includes an A/D converter structured to convert the voltage signal into a digital value,
an offset circuit structured to give an offset to an output of the A/D converter,
two multipliers structured to multiply sine and cosine waves including the reference frequency by an output of the offset circuit, and
a calculator structured to process an output of the two multipliers.

US Pat. No. 10,921,446

COLLABORATIVE MAPPING OF A SPACE USING ULTRASONIC SONAR

MICROSOFT TECHNOLOGY LICE...

1. A method for ultrasonic mapping, the method comprising:receiving, with a sonic mapping service and from a first scanning device, first sonic scan data of a first sonic scan comprising:
first raw audio data comprising a first ultrasonic impulse generated by a transducer of the first scanning device and a first reflected signal from a space, the first raw audio data recorded using a microphone of the first scanning device; and
a first scan location associated with the first sonic scan;
receiving, with the sonic mapping service and from a second scanning device, second sonic scan data of a second sonic scan comprising:
second raw audio data comprising a second ultrasonic impulse generated by a transducer of the second scanning device and a second reflected signal from the space, the second raw audio data recorded using a microphone of the second scanning device; and
a second scan location associated with the second sonic scan;
generating, by the sonic mapping service and based on the first and second sonic scan data, a collaborative sonic map, wherein the collaborative sonic map is a 3D representation of the space; and
distributing, by the sonic mapping service, the collaborative sonic map to the first and second scanning devices substantially in real time.

US Pat. No. 10,921,445

METHOD FOR OPERATING AN ULTRASONIC SENSOR APPARATUS FOR A MOTOR VEHICLE WITH ADAPTATION OF A TEMPORAL PROFILE OF AN AMPLITUDE IN FREQUENCY-MODULATED EXCITATION SIGNALS

Valeo Schalter und Sensor...

1. A method for operating an ultrasonic sensor apparatus for a motor vehicle, the method comprising:exciting a diaphragm of a first ultrasonic sensor to emit a first ultrasonic signal using a frequency-modulated first excitation signal; and
exciting a diaphragm of a second ultrasonic sensor to emit a second ultrasonic signal using a frequency-modulated second excitation signal,
wherein the diaphragm of the first ultrasonic sensor and the diaphragm of the second ultrasonic sensor have the same resonant frequency,
wherein the first excitation signal comprises a first frequency range and the second excitation signal comprises a second frequency range that differs from the first frequency range, and
wherein a temporal profile of a maximum amplitude of the first excitation signal and a temporal profile of a maximum amplitude of the second excitation signal are changed.

US Pat. No. 10,921,444

AIRBORNE WIND PROFILING PORTABLE RADAR SYSTEM AND METHOD

Foster-Miller, Inc., Wal...

1. An airborne wind profiling portable radar (A WIPPR) system comprising:a mobile airborne platform including one or more navigation units configured to produce navigation data including at least the position and orientation of the mobile airborne platform;
a radar unit mounted and positioned to the mobile airborne platform, the radar unit configured to transmit a wide-band frequency modulated continuous wave radar signal in a downward direction from the mobile airborne platform towards the ground and configured to continuously receive a reflected signal from each of a plurality of clear air scatters (CAS) targets or volumetric targets and output radar data;
an inertial measurement unit (IMU) in communication with the one or more navigation units and the radar unit configured to receive the navigation data and determine the position and orientation of the radar at a specific point in time and output IMU data;
a data acquisition unit in communication a with the radar unit and the IMU configured to receive and time align radar data and the IMU data for each reflected signal from each of the plurality of CAS targets or volumetric targets to provide an antenna pointing direction for each received reflected signal;
wherein the data acquisition unit is configured to process the time aligned radar data and IMU data to determine a distance and a Doppler velocity, of each of the plurality of CAS targets or volumetric targets, provide a range, a velocity, and an antenna pointing direction for each of the plurality of CAS targets or volumetric targets, and calculate a vector wind velocity using the range, the velocity, and the antenna pointing direction for each of the plurality of CAS targets or volumetric scatters targets: and
wherein the data acquisition unit is configured to further correct the range, the velocity, and/or the antenna pointing direction of each of the plurality of CAS targets or volumetric targets to accommodate for a motion shill in data produced by one or more of: a relative motion and orientation of the mobile airborne platform, a Doppler spread in the range, the velocity and/or the antenna pointing direction, and a ground echo.

US Pat. No. 10,921,443

AUTOMOTIVE RADAR SYSTEM AND METHOD OF SYNCHRONISING AN AUTOMOTIVE RADAR SYSTEM

NXP B.V., Eindhoven (NL)...

1. An automotive radar system comprising:a master radar module;
a first radar module;
a second radar module;
an optical waveguide arrangement operably coupling the master radar module to the first and second radar modules, wherein:
the master radar module comprises an electro-optical interface device having an electrical domain side and an optical domain side, the optical domain side being operably coupled to the optical waveguide arrangement; and
the master radar module comprises a digital clock signal generator operably coupled to the electrical domain side of the electro-optical interface device, wherein the digital clock signal generator generates, in response to a trigger signal, a digital clock signal and the master radar module synchronizes with the first radar module and the second radar module by communicating, via an optical domain and using the optical waveguide arrangement, the digital clock signal and the trigger signal to the first radar module and from the first radar module to the second radar module.

US Pat. No. 10,921,442

SENSOR WITH FLAT-BEAM GENERATION ANTENNA

HITACHI AUTOMOTIVE SYSTEM...

1. A sensor having an antenna, the antenna comprising:a substrate;
a radiation source formed on a first surface of the substrate;
a first conductor formed on the first surface of the substrate; and
a wave guide configured to internally propagate electromagnetic waves radiated from the radiation source and radiate the electromagnetic waves as a beam,
wherein a radiation-side opening of the wave guide has a shape in which a first direction and a second direction are orthogonal to each other, and the second direction is longer than the first direction, a shape of an opening on the side opposite to the radiation-side opening is shorter in the second direction than in the first direction,
an edge of the opening on the side opposite to the radiation-side opening is disposed on a surface side of the substrate on which the radiation source formed so as to encompass the radiation source,
a dielectric lens is disposed at the radiation-side opening and inside the wave guide,
the radiation side opening is one end of the antenna, and a flat side of the dielectric lens is flush with the one end of the antenna,
a radiation source-side opening is disposed on the first surface of the substrate, and
the first conductor surrounds the radiation source at a predetermined distance and the radiation source-side opening encompasses the first radiation source.

US Pat. No. 10,921,441

SYNTHETIC APERTURE RADAR SIGNAL PROCESSING DEVICE

MITSUBISHI ELECTRIC CORPO...

1. A synthetic aperture radar signal processing device, comprising:a low-accuracy interpolator to perform interpolation processing on discrete data obtained from signals received by a synthetic aperture radar;
a high-accuracy interpolator to perform interpolation processing on the discrete data with higher accuracy than the low-accuracy interpolation processing unit;
a curvature determiner to select either the high-accuracy interpolator or the low-accuracy interpolator in accordance with a first curvature that is a curvature of the discrete data at a target area for the interpolation processing; and
an image reproduction processor to reproduce an image by use of a result of the interpolation processing selected by the curvature determiner,
wherein the curvature determiner selects a point A, a point B, and a point C of discrete data adjacently arranged in a predetermined direction near the target area, and determines the first curvature based on a distance ?f1R between a point externally dividing a line segment connecting the point A and the point B at (AB+BC):BC and the point C (where AB is a distance between the point A and the point B, and BC is a distance between the point B and the point C).

US Pat. No. 10,921,440

PERSONAL PROTECTION SYSTEM WITH RF TIME-OF-FLIGHT RANGING

SAFEMINE AG, Baar (CH)

1. A system for generating proximity warnings on a site on which a regular size object is at risk from a movement of an oversized movable object, the system comprising:a point-to-point radio ranging system comprising
a set of anchors adapted and specifically foreseen to be mounted on the oversized object,
a tag adapted and specifically foreseen to be mounted on the regular size object, and
a distance determining unit configured for providing a set of distance determinations between each one of the set of anchors and the tag, based on a defined measuring protocol of a time-of-flight measurement by radio frequency signals, particularly ultra-wideband signals,
a warning unit configured for providing a proximity warning based on the set of distance determinations,
an anchor status dataset stored in a system storage, comprising information on local positions within an arrangement of the set of anchors, wherein a local position is assigned to each one of the set of anchors,
a position determining unit configured for determining position information of the tag relative to the arrangement of the set of anchors, based on an automated procedure comprising the steps of
identifying one of the set of anchors as a position determination anchor, wherein the position determination anchor is defined as the anchor with the closest measured distance to the tag determined by the distance determining unit, and
assigning a field of observation to the position determination anchor, based on the anchor status dataset,
wherein the warning unit comprises a position indicator configured for indicating the position of the tag relative to the arrangement of anchors, based on at least
a first indication associated with the field of observation assigned to the position determination anchor, and
a second indication associated with the distance between the position determination anchor and the tag.

US Pat. No. 10,921,439

DISTANCE ESTIMATION BASED ON NARROW-BAND WIRELESS TIME-OF-FLIGHT

NXP USA, Inc., Austin, T...

1. A method comprising:generating, at a first device, a first plurality of counts, each of the first plurality of counts indicative of a transmit time of a corresponding packet;
generating a second plurality of counts, each of the second plurality of counts indicative of a receive time of a corresponding packet;
in response to a number of samples of the first plurality of counts exceeding a threshold,
generating a plurality of timestamps based on the first plurality of counts and the second plurality of counts;
generating a plurality of time-of-flight values based on the plurality of timestamps;
generating an effective time-of-flight value based on a combination of the plurality of the time-of-flight values;
identifying a distance between the first device and a second device based on the effective time-of-flight value; and
keeping a count of rollovers at a counter and employing the rollover count to extract the plurality of timestamps from raw counts provided by the counter.

US Pat. No. 10,921,438

POSITION DETERMINATION METHOD AND DEVICE

Samsung Electronics Co., ...

1. An electronic device comprising:a communication module;
a sensor module configured to sense a direction of the electronic device;
an input module; and
a processor,
wherein the processor is configured to:
when a user input to select a first external electronic device and a second external electronic device is received, transmit device information of the first external electronic device to the second external electronic device through the communication module;
request direction information of the first external electronic device determined based on the second external electronic device and direction information of the second external electronic device;
receive at least one wireless communication signal from a first external electronic device through the communication module;
determine a direction of the first external electronic device based on the electronic device by using information about the wireless communication signal;
obtain direction information of the electronic device by using the sensor module;
receive the direction information of the first external electronic device determined based on the second external electronic device and the direction information of the second external electronic device, from the second external electronic device; and
determine a position of the first external electronic device by using the direction information of the first external electronic device determined based on the electronic device, the direction information of the electronic device, the direction information of the first external electronic device determined based on the second external electronic device, and the direction information of the second external electronic device.

US Pat. No. 10,921,437

OBJECT TRACKING IN AN AREA OF DISTRIBUTED SENSORS

DATABUOY CORPORATION, Vi...

1. A method comprising:receiving a first sequence of motion observations of a moving object from a first set of sensors of a plurality of sensors;
calculating, based on the first sequence of motion observations, a first sequence of distance ratios for first pairs of the first set of sensors;
generating first transects based on the first sequence of distance ratios;
producing a first motion track of the moving object based on:
the first transects; and
a map comprising location information of the plurality of sensors;
determining, employing the map, a second set of sensors of the plurality of sensors located in an area in proximity of the first motion track;
receiving a second sequence of motion observations of the moving object from the second set of sensors;
calculating, based on the second sequence of motion observations, a second sequence of distance ratios for second pairs of the second set of sensors;
generating second transects based on the second sequence of distance ratios; and producing a second motion track of the moving object based on at least:
the first motion track;
the second transects; and
the map.

US Pat. No. 10,921,436

MIMO RADAR CODING FOR RESOLVING VELOCITY AMBIGUITY

NXP B.V., Eindhoven (NL)...

11. An apparatus for resolving velocity ambiguity in a MIMO RADAR comprising:a plurality (N) of transmit channels, wherein a waveform coding for the MIMO RADAR is performed assuming N+1 transmit channels, wherein each one of the N transmit channels each transmit the coded waveform of a different one of the (N+1) encoded waveforms, and wherein the (N+1)th encoded waveform is not transmitted, but comprises a virtual channel, wherein
each transmit channel comprises a transmit antenna configured to transmit a plurality of chirps, and
each chirp comprises a frequency ramp of a transmit frequency of the respective transmit channel, and
each transmit channel waveform is orthogonal to another transmit channel waveform and orthogonal to the virtual channel waveform;
a waveform generator configured to generate a local oscillator signal (LO) for each transmit channel; and
a frequency offset circuit configured to modify the LO signal of each transmit channel with a respective frequency offset to generate the respective transmit frequency.

US Pat. No. 10,921,435

METHOD OF DETECTING AN OBJECT

NXP USA, INC., Austin, T...

1. A method of detecting an object using a radar system, the method comprising:transmitting a first radar beam having a first frequency and a first radiation pattern from an antenna, the first radiation pattern comprising a peak at a zero-azimuth angle;
detecting a first signal from the object due to a first reflection of the first radar beam;
transmitting a second radar beam having a second frequency and a second radiation pattern from the antenna, the second radiation pattern comprising a peak at a non-zero azimuth angle;
detecting a second signal from the object due to a second reflection of the second radar beam; and
comparing the first signal and the second signal to determine an angular location of the object relative to the zero-azimuth angle.

US Pat. No. 10,921,434

RADAR SYSTEM

NXP B.V., Eindhoven (NL)...

1. A method of detecting an object, the method comprising:generating a plurality of multi-phase modulated transmission signals by:
generating a carrier signal; and
modulating the carrier signal with a plurality of mutually orthogonal transmission multi-phase modulation signals;
transmitting the plurality of multi-phase modulated transmission signals;
receiving a plurality of reflected signals corresponding to the plurality of multi-phase modulated transmission signals, the plurality of reflected signals having been reflected from the object;
demodulating the plurality of reflected signals to extract a plurality of received multi-phase modulation signals;
correlating each received multi-phase modulation signal with the corresponding transmission multi-phase modulation signal; and
determining a range of the object from the plurality of correlations of the plurality of received multi-phase modulation signals and the plurality of corresponding transmission multi-phase modulation signals.

US Pat. No. 10,921,433

METHOD, APPARATUS AND SYSTEM FOR AUTOMATED VEHICLE WITH TARGET LOCALIZATION

Aptiv Technologies Limite...

1. A system of a first vehicle, comprising:at least three receivers, wherein each of the at least three receivers is configured to receive a first signal of a first wavelength from a transmitter of a second vehicle; and
a controller configured to:
calculate one or more first location candidates of the second vehicle with respect to the first vehicle, the one or more first location candidates calculated based on differences among first signal phases for the first signal received at each of the at least three receivers, a lateral distance between each of the at least three receivers, a longitudinal distance between each of the at least three receivers, and the first wavelength, the one or more first location candidates including a longitudinal distance between the transmitter and one of the at least three receivers and a lateral distance between the transmitter and the one of the at least three receivers; and
provide the one or more first location candidates as an input of a relative position of the second vehicle with respect to the first vehicle to support a partially-automated or a fully-automated operation of the first vehicle.

US Pat. No. 10,921,432

SEAMLESS AUTHENTICATION USING RADAR

Google LLC, Mountain Vie...

1. An apparatus, comprising:a radar-based authentication system comprising:
a radar-emitting element configured to provide a radar field;
an antenna element configured to receive reflections from an object that is within the radar field; and
a signal processor configured to process the received reflections to provide authentication data associated with the received reflections;
one or more computer processors; and
one or more computer-readable storage media having instructions stored thereon that, responsive to execution by the one or more computer processors, perform operations comprising:
causing the radar-based authentication system to provide a radar field with the radar-emitting element;
causing the signal processor to process first reflections from the object in the radar field received with the antenna element, to provide first authentication data for the object;
determining, based on the first authentication data for the object, that the object is a person;
responsive to determining that the object is the person, sensing, by an identification system comprising at least one non-radar sensor, an identifying characteristic associated with the person; and
determining, based on the identifying characteristic associated with the person, that the person is an authorized user.

US Pat. No. 10,921,431

APPARATUSES FOR SCANNING A LIDAR SYSTEM IN TWO DIMENSIONS

Cepton Technologies Inc.,...

1. A scanning lidar system comprising:a fixed frame;
a first platform;
a first electro-optic assembly including a first laser source and a first photodetector mounted on the first platform;
a first flexure assembly flexibly coupling the first platform to the fixed frame;
a drive mechanism configured to, via the first flexure assembly, translate the first platform with respect to the fixed frame in two dimensions in a plane substantially perpendicular to an optical axis of the scanning lidar system; and
a controller coupled to the drive mechanism, the controller configured to cause the drive mechanism to translate the first platform in a first direction with a first frequency and in a second direction with a second frequency, the second frequency being different from the first frequency.

US Pat. No. 10,921,430

SURVEYING SYSTEM

TOPCON Corporation, Toky...

1. A surveying system having a total station and a target instrument, wherein said target instrument has an illuminating lamp for emitting an illumination light toward said total station, wherein said total station has a distance measuring light projecting unit for projecting a distance measuring light, a light receiving unit for receiving a reflected distance measuring light and producing a light receiving signal, a distance measuring unit for performing a distance measurement of an object to be measured based on said light receiving signal, an optical axis deflector provided on a distance measuring optical axis and capable of deflecting said distance measuring optical axis two-dimensionally, a projecting direction detecting module for detecting a deflection angle of said distance measuring optical axis and performing an angle measurement, an image pickup unit having an image pickup optical axis in parallel with said distance measuring optical axis in a condition not deflected by said optical axis deflector, and an arithmetic control module for controlling a deflecting action of said optical axis deflector and a distance measuring action of said distance measuring unit, wherein said arithmetic control module is configured to detect said illumination light from an image acquired by said image pickup unit, to acquire a direction of said illuminating lamp based on a detection result of said illumination light, to make said optical axis deflector to scan two-dimensionally with said distance measuring light around the acquired direction as a center, and to perform a distance measurement and an angle measurement along a scanning path, wherein said target instrument has a retro-reflector of a reflection sheet and has a reference point of said target instrument at a known position with respect to said illuminating lamp, a reference reflection part around said reference point, and an auxiliary reflection part extending in an up-and-down direction from said reference reflection part, wherein said total station is configured to detect said target instrument based on the reflected distance measuring light from said auxiliary reflection part or said reference reflection part and further to detect said reference point based on the reflected distance measuring light from said reference reflection part, and said arithmetic control module is configured to make said optical axis deflector to scan said distance measuring optical axis based on a detection result of said reference point and to acquire a three-dimensional position of said reference point.

US Pat. No. 10,921,429

OBSTACLE DETECTION DEVICE, MOVING BODY, AND OBSTACLE DETECTION METHOD

SHARP KABUSHIKI KAISHA, ...

1. An obstacle detection device comprising:a distance measurement sensor that emits a detection wave to an object to be detected, receives a reflection wave from the object to be detected, and measures a detection distance to the object to be detected;
a detection image generation unit that:
generates a detection image indicating a presence of the object to be detected in a detection range where the detection wave is emitted based on a result of measurement by the distance measurement sensor; and
disposes an image of the object to be detected, in the detection image, as a reflection point at a coordinate corresponding to a position of the image of the object to be detected;
a rainfall determination unit that performs a rainfall determination of whether or not a region in the detection range is in a rainfall state, based on a presence of isolated points, each of which is the reflection point discretely positioned and discriminated as one of the isolated points, among the objects to be detected in the detection image;
a rain removal processing unit that executes a rain removal process by performing a calculation to remove the isolated points discriminated by the rainfall determination unit from the detection image; and
an obstacle determination unit that performs an obstacle determination of whether or not the object to be detected is an obstacle based on the detection image,
wherein, in a case where the rainfall determination unit determines that a region is in the rainfall state, the obstacle determination unit executes the obstacle determination based on the detection image on which the rain removal process is executed by the rain removal processing unit.

US Pat. No. 10,921,428

METHOD AND SYSTEM FOR DETERMINING DIELECTRIC PROPERTIES OF AN OBJECT

Plymouth Rock Technologie...

1. A system for obtaining dielectric properties of an object, the system comprising:a plurality of transceivers configured to generate and detect radiation in at least one of a microwave-wave region and millimeter-wave region of an electromagnetic spectrum, each transceiver pair being positioned in spatially fixed relationships relative to other transceivers; and
a processor configured to implement:
a controller configured to selectively activate two or more transceivers to generate transmission signals configured to irradiate at least a portion of said object such that for each of the transmission signals generated by one of the plurality of transceivers, at least another one of the plurality of transceivers generates a detection signal in response to detection of at least a portion of radiation reflected from the at least one portion of the object in response to irradiation by the transmission signals; and
an analyzer configured to compute, for each pixel of a plurality of pixels in the at least one portion of the object, one or more pair-wise reflectivity coefficients such that each pair-wise reflectivity coefficient is computed based on a reflection signal generated by one of the plurality of transceivers in response to a signal transmitted by another one of the plurality of transceivers, and is proportional to a ratio of the reflection signal to the signal transmitted;
wherein for at least one pixel of the plurality of pixels, a plurality of distinct pair-wise reflectivity coefficients is computed.

US Pat. No. 10,921,427

DRONE-BASED CALIBRATION OF A PHASED ARRAY RADAR

LeoLabs, Inc., Menlo Par...

1. A method of calibrating a phased-array radar, the method comprising:receiving a transmission as a received signal, at one of either a mobile platform or an antenna element of the phased-array radar, the transmission being sent as a transmitted signal from the other of the mobile platform or the antenna element, the mobile platform is a powered drone or an unpowered platform;
correlating the received signal to the transmitted signal to produce an initial phase delay for that antenna element;
determining a difference between the phase delay and an expected phase delay, wherein the expected phase delay is based upon a relative position between the antenna element and the mobile platform; and
saving the difference as a final phase delay for the antenna element.

US Pat. No. 10,921,426

CALIBRATION DEVICE OF ON-BOARD RADAR

AUTEL INTELLIGENT TECHNOL...

1. An on-board radar calibration device, comprising:a bracket assembly;
a beam assembly mounted on the bracket assembly, the beam assembly being movable relative to the bracket assembly in a vertical direction;
a sliding member mounted on the beam assembly, the sliding member being movable relative to the beam assembly in a horizontal direction, the sliding member comprising a first surface and a second surface opposite to the first surface, the sliding member being provided with a first through hole, and the first through hole penetrating the first surface and the second surface;
a calibration laser accommodated in the first through hole and configured to emit a laser beam toward a to-be-calibrated automobile; and
a radar calibration auxiliary device mounted on the sliding member, the radar calibration auxiliary device being movable relative to the beam assembly together with the sliding member in a horizontal direction, and the radar calibration auxiliary device comprising a second through hole;
the calibration laser being configured to emit the laser beam to pass through the second through hole, to position the radar calibration auxiliary device;
wherein the calibration laser is configured to emit the laser beam to an on-board radar of the to-be-calibrated automobile by adjusting a position of the sliding member relative to the bracket assembly, to position the radar calibration auxiliary device, so that the radar calibration auxiliary device is positioned to a preset position relative to the on-board radar;
wherein the calibration laser is configured to emit the laser beam to a preset position on a surface of the on-board radar facing the on-board radar, calibration device;
wherein the on-board radar calibration device further comprises an auxiliary positioning apparatus configured to assist the calibration laser in emitting the laser beam to the preset position on the surface of the on-board radar facing the on-board radar calibration device,
wherein the auxiliary positioning apparatus is detachably attached on the surface of the vehicle-mounted radar.

US Pat. No. 10,921,425

RADAR DEVICE AND CONTROL METHOD OF RADAR DEVICE

DENSO TEN LIMITED, Kobe ...

1. A radar device comprising:a transmitter that transmits a transmission wave based on a transmission signal of which frequency is modulated;
a receiver that receives a reflected wave reflected by a target to acquire a reception signal based on the reflected wave, and which outputs a beat signal based on the transmission signal and the reception signal; and
at least one processor configured to control an output timing at which the beat signal is outputted by the receiver in accordance with a predetermined timing at which a frequency of the transmission signal becomes a predetermined frequency.

US Pat. No. 10,921,424

ON-VEHICLE RADAR SYSTEM

GM Global Technology Oper...

1. A radar system for a vehicle, comprising:a multiple input-multiple output (MIMO) system including a plurality of transmitters, a plurality of receivers, and a controller including an interpreter in communication with the plurality of transmitters and the plurality of receivers;
wherein the plurality of transmitters includes a first transmitter and a plurality of second transmitters;
wherein each of the transmitters includes a signal generator in communication with a transmitting antenna that is disposed to transmit a radar signal;
wherein each of the receivers includes a receiving antenna that is disposed to receive a reflected radar signal;
wherein each of the transmitted radar signals is a linear-frequency-modulated continuous-wave (LFM-CW) radar signal including a chirp-start portion;
wherein the transmitters are controllable such that the respective chirp-start portions of the LFM-CW radar signals that are transmitted from the second transmitters have progressively increased time delays as compared to the chirp-start portion of the LFM-CW radar signal that is transmitted from the first transmitter;
wherein the respective chirp-start portions of the LFM-CW radar signals being transmitted from the transmitters have progressively increased time delays, including the first transmitter being arranged to generate a first transmitter signal and one of the plurality of second transmitters being arranged to generate a second transmitter signal;
wherein the first transmitter signal is initiated with a first chirp start at a first time and is terminated at a second time; and
wherein the second transmitter signal is initiated at a third time that is halfway between the first time and the second time.

US Pat. No. 10,921,423

MULTICARRIER AND FREQUENCY HOPPED RADAR WAVEFORM GENERATOR USING EFFICIENT DIGITAL SYNTHESIS

United States of America ...

1. A radar pulse generator comprising:a multiplexer having a baseband radar pulse input, a multiplexer control input, a first channel output and a second channel output, said baseband radar pulse input being operable to receive a baseband radar pulse input signal, said multiplexer control input being operable to receive a multiplexer control input signal, said first channel output being operable to output a first channel output signal, said second channel output being operable to output a second channel output signal, the baseband radar pulse input signal being single channel baseband radar pulse signal, the multiplexer control input signal being operable to select one of the group consisting of the first channel output and the second channel output;
a polyphase synthesizer operable to synthesize the first channel output signal, to synthesize the second channel output signal and to output a desired radar pulse signal based on the synthesized first channel output signal and the synthesized second channel output signal;
a first signal channel operable to provide the first channel output signal from said first channel output to said polyphase synthesizer;
a second signal channel operable to provide the second channel output signal from said second channel output to said polyphase synthesizer;
wherein said multiplexer control input is further operable to receive a second multiplexer control input signal, said first channel output is further operable to output a subsequent first channel output signal, said second channel output is further operable to output a subsequent second channel output signal, the second multiplexer control input signal being operable to select one of the group consisting of the first channel output and the second channel output;
wherein said polyphase synthesizer is further operable to synthesize the subsequent first channel output signal, to synthesize the subsequent second channel output signal and to output a subsequent desired radar pulse signal based on the synthesized subsequent first channel output signal and the synthesized subsequent second channel output signal;
wherein the desired radar pulse signal is different from the subsequent desired radar pulse signal;
wherein said polyphase synthesizer comprises:
a fast Fourier transform component operable to receive the first channel output signal, to receive the second channel output signal, to perform a fast Fourier transform on the first channel output signal, to perform a fast Fourier transform signal on the second channel output signal, to output a first transformed signal based on the first channel output signal and to output a second transformed signal based on the second channel output signal;
a first polyphase filter having a first weighting coefficient, said first polyphase filter being operable to generate a first polyphase filter signal based on the first transformed signal and the first weighting coefficient;
a second polyphase filter having a second weighting coefficient, said second polyphase filter being operable to generate a second polyphase filter signal based on the second transformed signal and the second weighting coefficient;
an interleaving component operable to output the desired radar pulse signal by interleaving the first polyphase filter signal and the second polyphase filter signal;
wherein said fast Fourier transform component is further operable to receive the subsequent first channel output signal, to receive the subsequent second channel output signal, to perform a fast Fourier transform on the subsequent first channel output signal, to perform a fast Fourier transform on the subsequent second channel output signal, to output a subsequent first transformed signal based on the subsequent first channel output signal and to output a subsequent second transformed signal based on the subsequent second channel output signal;
wherein said first polyphase filter is further operable to generate a subsequent first polyphase filter signal based on the subsequent first transformed signal and the first weighting coefficient;
wherein said second polyphase filter is further operable to generate a subsequent second polyphase filter signal based on the subsequent second transformed signal and the second weighting coefficient; and
wherein said interleaving component is further operable to output the subsequent desired radar pulse signal by interleaving the subsequent first polyphase filter signal and the subsequent second polyphase filter signal.

US Pat. No. 10,921,422

BELOW-NOISE AFTER TRANSMIT (BAT) CHIRP RADAR

The Boeing Company, Chic...

1. A radar system, comprising:a transmit antenna for transmitting a radio frequency (RF) signal or a radar signal;
a receive antenna for receiving a plurality of reflected signals created by a plurality of targets reflecting the RF signal or radar signal, the reflected signals comprising noise;
an analog-to-digital converter (ADC) that digitizes or samples the reflected signals to provide a digitized or sampled noisy input signal; and
a reservoir computer that receives the noisy input signal, the reservoir computer comprising a time-varying reservoir and being configured to de-noise the noisy input signal and provide a range measurement for each of the plurality of targets, wherein the time-varying reservoir comprises a state transition matrix comprising a predetermined block diagonal structure that is optimized for signal de-noising.

US Pat. No. 10,921,421

RADAR MODULE

NXP USA, INC., Austin, T...

1. A radar module comprising:a low temperature co-fired ceramic, LTCC, substrate;
a radar chip attached to a first surface of the LTCC substrate and configured to generate a radar signal for transmission; and
a transmitting antenna for transmitting the radar signal, the transmitting antenna attached to a second surface of the LTCC substrate and configured to communicate with the radar chip through the LTCC substrate;
wherein the radar module further comprises a beam steering element configured to introduce a phase delay to the radar signal in order to adjust a first component of a direction of transmission of the radar signal, the beam steering element comprising a phase rotator configured to generate a first phase rotated signal and a second phase rotated signal from the radar signal, the phase of the first phase rotated signal differing from the phase of the second phase rotated signal by a signal phase difference;
wherein the transmitting antenna element comprises a first feeding point configured to receive the first phase rotated signal from the phase rotator, and a second feeding point configured to receive the second phase rotated signal from the phase rotator, such that the transmitting antenna transmits a resultant radar signal in a direction having the first component determined by the signal phase difference.

US Pat. No. 10,921,420

DUAL-SIDED RADAR SYSTEMS AND METHODS OF FORMATION THEREOF

INFINEON TECHNOLOGIES AG,...

1. A radar system comprising:a substrate comprising a first surface and a second surface, the first surface being opposite the second surface;
transmitter front-end circuitry attached to the substrate, the transmitter front-end circuitry being configured to transmit a transmitted radio frequency (RF) signal in a first direction away from the first surface and in a second direction away from the second surface;
an antenna disposed entirely within the substrate and coupled to the transmitter front-end circuitry, the antenna being configured to directionally transmit the transmitted RF signal in both the first direction and the second direction;
a first receive antenna disposed at the first surface, the first receive antenna being configured to receive a first reflected RF signal propagating in the second direction, the first reflected RF signal being generated by the transmitted RF signal; and
a second receive antenna disposed at the second surface, the second receive antenna being configured to receive a second reflected RF signal propagating in the first direction, the second reflected RF signal being generated by the transmitted RF signal.

US Pat. No. 10,921,419

METHODS AND APPARATUS FOR WIDEBAND LOCALIZATION

Massachusetts Institute o...

1. An apparatus that comprises:(a) a transceiver; and
(b) one or more computers,wherein(i) the transceiver is configured
(A) to wirelessly transmit a first radio signal at a first frequency, the first signal encoding a command,
(B) to wirelessly transmit a second radio signal at a second frequency, the second frequency being different than the first frequency, and
(C) to take measurements of reflections of the second radio signal, including reflections from a backscatter node, while (I) the apparatus is transmitting the second radio signal at the second frequency and (II) changes in impedance are occurring, in response to the command, in the backscatter node, and
(ii) the one or computers are programmed to extract, from the measurements, a signal from the backscatter node.

US Pat. No. 10,921,418

METHOD AND APPARATUS FOR LOCATION ESTIMATION OF TERMINAL IN WIRELESS COMMUNICATION SYSTEM

Industry-Academic Coopera...

1. A method of operating a positioning apparatus including a processor, the method comprising:(a) calculating distances between a terminal and first, second, and third base stations;
(b) creating first, second, and third circles centered at locations of the first, second, and third base stations with radii corresponding to the distances;
(c) calculating intersection distances between two intersections formed by the second circle, which is the smallest circle, and one of the first circle and the third circle and the other two intersections formed by the first circle and the third circle; and
(d) determining one of the intersections corresponding to the shortest distance among the intersection distances as the terminal's location,
wherein operation (a) comprises calculating the distances on the basis of a time of arrival (TOA) of signals transmitted from the first, second, and third base stations to the terminal.

US Pat. No. 10,921,417

USING BLUETOOTH BEACONS TO AUTOMATICALLY UPDATE THE LOCATION WITHIN A PORTABLE GAS DETECTOR'S LOGS

HONEYWELL INTERNATIONAL I...

1. A method for updating location information on a gas detector device, the method comprising:receiving, by the gas detector device, a wireless beacon which operates as would a Bluetooth® wireless beacon, when the gas detector device passes within a range of the wireless beacon, wherein the wireless beacon contains location information, wherein the gas detector device receives the wireless beacon via a wireless receiver incorporated into the gas detector device;
presenting, by the gas detector device, a confirmation message for updating the location information, to a user via a user interface of the gas detector device;
updating, by the gas detector device, the location information stored on the gas detector device using the location information from the wireless beacon when the user provides a confirmation input in response to the confirmation message; and
associating, by the gas detector device, subsequent readings taken by one or more sensors of the gas detector device with the updated location information when the readings are stored within the gas detector device.

US Pat. No. 10,921,416

MULTIVARIATE POSITION ESTIMATION

L3 Technologies, Inc., N...

1. A method, performed by a tracker that comprises a computing system that is configured to receive periodic communications from a moving object and employ various types of information derived from the periodic communications to estimate a position of the moving object, the computing system comprising one or more computing devices, for performing multivariate position estimation to track the moving object with high accuracy, the method comprising:receiving periodic communications emitted from a moving object;
processing each of the periodic communications to generate a time of arrival measurement, an angle of arrival measurement, and a Doppler measurement for each respective periodic communication;
obtaining a tracker location representing where the tracker was located when each respective periodic communication was received; and
tracking the moving object by iteratively estimating an object location representing where the moving object was located when the moving object emitted each respective periodic communication using the time of arrival measurement, the angle of arrival measurement, the Doppler measurement, and the tracker location for the respective periodic communication, wherein the tracker estimates the object location for the respective periodic communication by minimizing a cost function that includes:
a time of arrival portion that incorporates the time of arrival measurement for the respective periodic communication;
an angle of arrival portion that incorporates the angle of arrival measurement for the respective periodic communication;
a Doppler portion that incorporates the Doppler measurement for the respective periodic communication; and
a tracker location portion that incorporates the tracker location when the respective periodic communication was received.

US Pat. No. 10,921,415

METHOD FOR DETERMINING THE DIRECTION OF ARRIVAL IN PRESENCE OF ALIASING AND ASSOCIATED DEVICE

THALES, Courbevoie (FR)

1. A method performed by a device configured to determine a direction of arrival of radio signals in the presence of aliasing by using an interferometric array with four antennas with identical diagrams, and by a controller configured to sample two distinct sampling frequencies per antenna, the aliasing being such that in a time-frequency representation of a signal, the signal being a wanted signal, a maximum of one antenna is affected by an interference phenomenon on the two sampling frequencies of the one antenna, the interference phenomenon being due to a first external interference and a second interference, the second interference being either a second external interference or an internal interference,the method comprising:receiving the signal by each antenna,
sampling, by the controller, the signals received on each of the four antennas according to two sub-Nyquist frequencies forming the set {f1, perm(f1); f2, perm(f2);f3, perm(f3);f4, perm(f4)}, wherein f1, f2, f3 and f4 are four distinct sub-Nyquist frequencies and perm is a permutation of the set {f1, f2, f3 f4}, such that the signals received on two distinct antennas are sampled by two distinct pairs of sub-Nyquist sampling frequencies,
applying, by the controller, a spectral analysis using a discrete Fourier transform during a synchronous acquisition period over all of the samplings to obtain 2P time-frequency grids, each element of a time-frequency grid containing a complex vector being a measurement, and
detecting the presence or absence of a wanted signal at a plurality of frequencies,
wherein for all of the detected wanted signals, the method further comprises:
determining an interference situation for each antenna,
determining, for the antennas other than the antenna affected by a double interference, a phase of the wanted signal, and
determining, for any antenna affected by the double interference, an estimate of the phase of the wanted signal, wherein determining the estimate comprises:
estimating a first estimate of a first pair of candidate phases ?11 and ?12 from a measurement z resulting from a mixture of the wanted signal, a first interference signal, and noise,
estimating the second estimate of a second pair of candidate phases ?21 and ?22 from a measurement ? resulting from a mixture of the wanted signal, a second interference signal, and noise, and
selecting phase values from among a candidate phases to obtain the estimate of the phase of the wanted signal on the antenna affected by the double interference.

US Pat. No. 10,921,414

TRACKING RECEIVER WITH INTEGRATED PHASE CALIBRATION AND METHOD

Viasat, Inc., Carlsbad, ...

1. A system for tracking a satellite, comprising:a tracking receiver, including:
a sum input;
a difference input;
a digital signal processor (DSP);
a first analog-to-digital (A/D) converter coupled between the sum input and the DSP, wherein the first A/D converter is configured to convert a signal received at the sum input into a sum digital signal, and to provide the sum digital signal to the DSP;
a second A/D converter coupled between the difference input and the DSP, wherein the second A/D converter is configured to convert a signal received at the difference input into a difference digital signal, and to provide the difference digital signal to the DSP; and
a calibration output coupled to the sum input and coupled to the difference input; wherein the tracking receiver is configured to generate a calibration signal and provide the calibration signal through the calibration output.

US Pat. No. 10,921,413

HIGH-FREQUENCY MAGNETIC FIELD GENERATING DEVICE

SUMIDA CORPORATION, Toky...

1. A high-frequency magnetic field generating device, comprising:two coils arranged with a predetermined gap in parallel with each other, the two coils (a) in between which electron spin resonance material is arranged or (b) arranged at one side from electron spin resonance material;
a high-frequency power supply that generates microwave current that flows in the two coils; and
a transmission line part connected to the two coils, that sets a current distribution so as to locate the two coils at positions other than a node of a stationary wave,
wherein:
the transmission line part is two transmission lines;
the two transmission lines are connected to the two coils, respectively;
one-side ends of the two transmission lines are open-circuited or are connected to a high impedance circuit for a frequency of the microwave current;
other-side ends of the two transmission lines are connected to one-side ends of the two coils; and
the microwave current from the high-frequency power supply flows into other-side ends of the two coils.

US Pat. No. 10,921,412

INTENSITY CORRECTED MAGNETIC RESONANCE IMAGES

Koninklijke Philips N.V.,...

1. A medical instrument comprising a processor and a memory, wherein the memory contains machine executable instructions, wherein execution of the machine executable instructions causes the processor to:receive a first magnetic resonance image data set descriptive of a first region of interest of a subject;
receive at least one second magnetic resonance image data set descriptive of a second region of interest of the subject, wherein the first region of interest at least partially comprises the second region of interest;
receive an analysis region within both the first region of interest and within the second region of interest;
construct a cost function comprising an intra-scan homogeneity measure separately for the first magnetic resonance image data set and separately for each of the at least one second magnetic resonance image data set, wherein the cost function further comprises an inter-scan similarity measure calculated using both the first magnetic resonance image data set and each of the at least one second magnetic resonance image data set;
by performing an optimization of the cost function by calculating a first intensity correction map for the first magnetic resonance image data set using an intensity correction algorithm within the analysis region and at least one second intensity correction map for each of the at least one second magnetic resonance image data set within the analysis region;
calculate a first corrected magnetic resonance image descriptive of the analysis region using the first magnetic resonance image data set and the first intensity correction map; and
calculate at least one second corrected magnetic resonance image descriptive of the analysis region using the at least at least one second magnetic resonance image data set and the at least one second intensity correction map.

US Pat. No. 10,921,411

METHOD AND DEVICE FOR CORRECTING A MAGNETIC RESONANCE COMBINED DATASET

Siemens Healthcare GmbH, ...

1. A method for correcting a combined dataset formed from partial datasets acquired at different positions of a patient support with a magnetic resonance device, the partial datasets being of an anatomical region of a patient delimited perpendicularly to a longitudinal direction within an acquisition region, the method comprising:determining, for slices of a slice stack in the longitudinal direction of the combined dataset, information describing geometry of the anatomical region and/or an anatomical feature of the anatomical region;
for at least one slice group including adjacent slices, comparing the geometry information to detect one or more discontinuities; and
for at least one discontinuity of the one or more discontinuities satisfying a correction criterion, correcting the combined dataset as a function of the geometry information to eliminate or reduce the at least one discontinuity.

US Pat. No. 10,921,410

METHOD AND SYSTEM FOR SUSCEPTIBILITY WEIGHTED MAGNETIC RESONANCE IMAGING

Koninklijke Philips N.V.,...

1. A method for susceptibility weighted magnetic resonance imaging of vasculature, the method comprising:acquiring multi-echo data containing a time-of-flight signal in at least a first echo;
identifying voxels belonging to arteries from the multi-echo data; and
generating corresponding information on artery presence;
performing an echo combination step, or an echo combination step in combination with a phase masking step;
using said corresponding information on artery presence to put emphasis on an artery appearance during said echo combination step and to prevent an inclusion of voxels belonging to arteries in the phase masking step;
creating an arterial image AI; and
identifying the voxels belonging to arteries in said arterial image, wherein in the performing the echo combination step, magnitude information from the echoes is combined using the following non-linear combination:

wherein p is an integer or a non-integer greater than zero, r is a weighting factor from different echoes, and t is a threshold value that separates voxels that are unlikely to contain arteries from voxel that are likely to contain arteries.

US Pat. No. 10,921,409

MAGNETIC RESONANCE IMAGING APPARATUS, MAGNETIC RESONANCE IMAGING METHOD AND MAGNETIC RESONANCE IMAGING SYSTEM

CANON MEDICAL SYSTEMS COR...

1. A magnetic resonance imaging apparatus, comprising:a display configured to display at least a locator image and a reference image;
an input interface configured to set a region of interest on the locator image displayed on the display, the region of interest indicating an imaging region of the reference image; and
processing circuitry configured to
scan a subject to obtain three dimensional data,
generate the locator image from the three dimensional data and display the locator image on the display,
display a graphic on the locator image, the graphic representing the region of interest set by the input interface,
generate the reference image corresponding to the location of the region of interest from the three dimensional data and display the reference image on the display,
make, when a size or a position of the graphic on the locator image is changed by the input interface, adjustments to correspondingly change a display magnification or a position of the reference image, and
make, when a display magnification or a position of the reference image is changed by the input interface, adjustments to correspondingly change a size or a position of the graphic on the locator image.

US Pat. No. 10,921,408

PROBABILISTIC ATLASES OF POST-TREATMENT MULTI-PARAMETRIC MRI SCANS REVEAL DISTINCT HEMISPHERIC DISTRIBUTION OF GLIOBLASTOMA PROGRESSION VERSUS PSEUDO-PROGRESSION

Case Western Reserve Univ...

1. A non-transitory computer-readable storage device storing computer-executable instructions that, when executed, cause a processor to perform operations, the operations comprising:accessing a plurality of multi-parametric magnetic resonance imaging (mpMRI) studies associated with a plurality of patients demonstrating Glioblastoma (GBM), respectively, where at least one member of the plurality of mpMRI studies is associated with a patient that demonstrated pseudo-progression (PsP), and where at least one other, different member of the plurality of mpMRI studies is associated with a patient that demonstrated tumor progression (TP), where an mpMRI study includes a plurality of MRI images, where a member of the plurality of MRI images includes a plurality of associated voxels, a voxel having an intensity;
generating a registered set of mpMRI studies by, for each member of the plurality of mpMRI studies, respectively:
generating an enhancing lesion segmented image by segmenting an enhancing lesion compartment represented in a first MRI image acquired during a first MRI sequence of a member of the plurality of mpMRI studies associated with a patient;
generating a peri-lesional hyperintensities segmented image by segmenting a peri-lesional hyperintensities compartment represented in a second, different MRI image acquired during a second, different MRI sequence of the member of the plurality of mpMRI studies associated with the patient;
registering the enhancing lesion segmented image and the peri-lesional hyperintensities segmented image with a reference brain atlas;
generating an enhancing lesion PsP population atlas by computing a voxel-wise frequency of occurrence of enhancing lesion of the members of the registered set of mpMRI studies associated with patients who demonstrated PsP;
generating a peri-lesional hyperintensities PsP population atlas by computing a voxel-wise frequency of occurrence of peri-lesional hyperintensities of the members of the registered set of mpMRI studies associated with patients who demonstrated PsP;
generating an enhancing lesion TP population atlas by computing a voxel-wise frequency of occurrence of enhancing lesion of the members of the registered set of mpMRI studies associated with patients who demonstrated TP;
generating a peri-lesional hyperintensities TP population atlas by computing a voxel-wise frequency of occurrence of peri-lesional hyperintensities of members of the registered set of mpMRI studies who demonstrated TP;
generating a frequency map for at least one of the enhancing lesion PsP population atlas, the peri-lesional hyperintensities PsP population atlas, the enhancing lesion TP population atlas, or the peri-lesional hyperintensities TP population atlas; and
displaying the frequency map.

US Pat. No. 10,921,407

SYSTEMS AND METHODS FOR MOTION MANAGEMENT IN MAGNETIC RESONANCE IMAGING GUIDED THERAPIES

The Medical College of Wi...

1. A method for acquiring magnetic resonance data using a magnetic resonance imaging (MRI) system, the steps of the method comprising:(a) performing a pulse sequence with the MRI system, wherein the pulse sequence includes:
a first radio frequency (RF) excitation pulse that excites spins in a first slice;
a first slice encoding gradient produced along a first axis and contemporaneous with the first RF excitation pulse to provide slice encoding of the spins in the first slice;
a second RF excitation pulse that excites spins in a second slice that is orthogonal to the first slice;
a second slice encoding gradient produced along a second axis that is orthogonal to the first axis and contemporaneous with the second RF excitation pulse to provide slice encoding of the spins in the second slice;
a first phase encoding gradient produced along the first axis to provide phase encoding of spins in the second slice;
a second phase encoding gradient produced along the second axis to provide phase encoding of spins in the first slice;
a frequency encoding gradient produced along a third axis that is orthogonal to the first axis and the second axis, and that forms a first echo signal at a first echo time and a second echo signal at a second echo time, wherein the first echo signal is associated with spins in the first slice and the second echo signal is associated with spins in the second slice;
(b) acquiring first data from the first echo signal with the MRI system, the first data being associated with the first slice;
(c) acquiring second data from the second echo signal with the MRI system, the second data being associated with the second slice; and
wherein:
the first RF excitation pulse is a multiband RF pulse that simultaneously excites spins in a plurality of parallel first slices that are each orthogonal to the second slice;
the first slice encoding gradient provides slice encoding of the spins in the plurality of parallel first slices;
the second phase encoding gradient provides phase encoding of the spins in the plurality of parallel first slices; and
the first data is associated with the plurality of parallel first slices.

US Pat. No. 10,921,406

MAGNETIC RESONANCE FINGERPRINTING METHOD AND APPARATUS

Siemens Healthcare GmbH, ...

1. A method for determination of parameter values in picture elements of an examination object by means of a magnetic resonance fingerprinting (MRF) technique, comprising the steps:providing a computer with MRF data, comprised of picture elements acquired from an examination object, and in said computer, producing at least one picture element time series from which one value in each case of a parameter present in least one location of the examination object shown in the respective picture element is to be determined;
in said computer, making a signal comparison of at least one section of the respective signal curve of the acquired picture element time series with a corresponding section of comparison signal curves for determination of the respective values of the at least one parameter;
in said computer, making a further signal comparison of at least one section of the respective signal curve, taking into account the results of the preceding signal comparison with a corresponding section of the comparison signal curves, in order to determine the respective values of the at least one parameter; and
in an output from the computer, representing the respective values of the parameters that were determined for the respective picture element.

US Pat. No. 10,921,405

IMAGE RECONSTRUCTING METHOD AND RECONSTRUCTING APPARATUS

CANON MEDICAL SYSTEMS COR...

1. A reconstructing apparatus comprising processing circuitry configured to:acquire first k-space data sampled with time-varying undersampling pattern, and biological signal information during a sampling period of the first k-space data;
generate second k-space data in which a data point corresponding to an undersampled data point in the first k-space data is filled by using a reconstructing process corresponding to the undersampling pattern in the first k-space data; and
generate a magnetic resonance (MR) image based on k-space data selected, by using the biological signal information, from the second k-space data.

US Pat. No. 10,921,404

LOW-FIELD MAGNETIC RESONANCE IMAGING METHODS AND APPARATUS

Hyperfine Research, Inc.,...

1. A magnetic resonance imaging system, comprising:a magnetics system having a plurality of magnetics components configured to produce magnetic fields for performing magnetic resonance imaging, the magnetic fields comprising a B0 magnetic field having a field strength of less than 0.2 Tesla (T); and
a power system comprising:
one or more power components configured to provide power to at least one of the plurality of magnetics components of the magnetics system to operate the magnetic resonance imaging system to perform image acquisition; and
a power connection configured to connect to a single-phase outlet to receive mains electricity and deliver the mains electricity to the power system to provide power to operate the magnetic resonance imaging system,
wherein the power system is configured to operate the magnetic resonance imaging system only using power supplied from the single-phase outlet.

US Pat. No. 10,921,403

SYSTEMS AND METHODS FOR PROVIDING GRADIENT POWER FOR AN MRI SYSTEM

GE PRECISION HEALTHCARE L...

1. A magnetic resonance imaging (MRI) system, comprising:a gradient driver configured to drive a plurality of gradient coils, the gradient driver comprising:
a plurality of gradient amplifiers, wherein each gradient amplifier of the plurality of gradient amplifiers is configured to be electrically coupled to a gradient coil of the plurality of gradient coils, and wherein each gradient amplifier comprises a respective single H-bridge of semiconductor switches; and
a high frequency power distribution unit (HFPDU) configured to receive an alternating current (AC) power signal from a main power source of the MRI system and to generate a direct current (DC) power signal to the plurality of gradient amplifiers via a DC bus shared by the plurality of gradient amplifiers.

US Pat. No. 10,921,402

ACTIVE SWITCHING FOR RF SLICE-SELECTING

Synaptive Medical Inc., ...

1. A method for operating a magnetic resonance (MRI) system to image a portion of a subject placed in a volume of magnetic field generated by a main magnet of the MRI system, the method comprising:applying, at a transmit radio frequency (RF) coil assembly, a first slice-selecting RF pulse to the portion of the subject placed in a region of the volume to select a first slice while selectively adjusting multiple capacitor banks of a transmit coil assembly to improve RF characteristics of the transmit RF coil assembly in transmitting the first slice-selecting RF pulse;
in response to the first slice-selecting RF pulse, acquiring first magnetic resonance (MR) signals emitted from the selected first slice of the portion of the subject placed in the region of the volume; and
reconstructing a first MR image based on the acquired first MR signals,
wherein one of: the RF characteristics of the RF transmit coil assembly is improved by virtue of a resonant frequency of the transmit RF coil assembly being adjusted to more closely match a resonant frequency of the first slice; and the RF characteristics of the RF transmit coil assembly is improved by virtue of an impedance of the transmit RF coil assembly being adjusted at the resonant frequency of the first slice.

US Pat. No. 10,921,401

ANTERIOR RADIO FREQUENCY (RF) COIL ARRAY FOR A MAGNETIC RESONANCE IMAGING (MRI) SYSTEM

GE PRECISION HEALTHCARE L...

1. A radio frequency (RF) coil array for a magnetic resonance imaging (MRI) system, comprising:a plurality of RF coils, each RF coil comprising an integrated capacitor coil loop, wherein each integrated capacitor coil loop comprises two parallel wire conductors and a dielectric material that encapsulates and separates the two parallel wire conductors;
a plurality of coupling electronics units each coupled to a respective coil loop; and
a plurality of coil-interfacing cables coupling each coupling electronics unit to an interfacing connector configured to couple to a cable of the MR imaging system.

US Pat. No. 10,921,400

CONFORMING POSTERIOR RADIO FREQUENCY (RF) COIL ARRAY FOR A MAGNETIC RESONANCE IMAGING (MRI) SYSTEM

GE PRECISION HEALTHCARE L...

1. A posterior radio frequency (RF) coil assembly for a magnetic resonance imaging (MRI) system, comprising:a RF coil array including a plurality of RF coils and a deformable material housing the plurality of RF coils, each RF coil comprising a loop portion of distributed capacitance wire conductors, wherein each distributed capacitance wire conductor comprises two parallel wire conductors and a dielectric material that encapsulates and separates the two parallel wire conductors; and
a coupling electronics portion coupled to each loop portion of each RF coil.

US Pat. No. 10,921,399

RADIO FREQUENCY (RF) COIL ARRAY FOR A MAGNETIC RESONANCE IMAGING (MRI) SYSTEM FOR USE IN INTERVENTIONAL AND SURGICAL PROCEDURES

GE PRECISION HEALTHCARE L...

7. A method comprising:attaching a radio frequency (RF) coil array assembly to an anatomy of a subject for receiving magnetic resonance (MR) signals from the anatomy, wherein the RF coil array comprises a plurality of RF coils, wherein each RF coil comprises two distributed capacitance wire conductors shaped into a loop portion, wherein the two distributed capacitance wire conductors are encapsulated and separated by a dielectric material, and the loop portion is void of discrete capacitive components and discrete inductive components; and
accessing the anatomy of the subject through at least one open area formed inside the loop portion of each RF coil of the RF coil array assembly.

US Pat. No. 10,921,398

SYSTEM AND METHOD FOR USING COILS IN MAGNETIC RESONANCE IMAGING

Synaptive Medical Inc., ...

1. A magnetic resonance imaging (MRI) system, comprising:a housing having a bore sized and shaped to exclusively accommodate a portion of a subject to be imaged;
a main magnet enclosed by said housing and configured to generate a substantially uniform magnet field within the bore;
a gradient sub-system comprising a plurality of gradient coils to apply a gradient waveform that provides a magnetic field gradient as perturbations to the substantially uniform magnet field;
an integrated radio frequency and shim (RF/Shim) flexible coil assembly comprising at least one RF coil, each at least one RF coil configured to: receive radio frequency (RF) signals from the subject in response to the portion of the subject being scanned, and generate and apply B0 shimming to improve a field homogeneity of the substantially uniform magnetic field encompassing the portion of the subject being scanned; and
a control unit configured to: drive each gradient coil of the gradient sub-system individually using a gradient waveform; and receive measurement results responsive to the gradient waveform such that a coupling between each gradient coil of the gradient sub-system and each at least one RF coil of the integrated radio frequency and shim (RF/Shim) flexible coil assembly is determined and subsequently reduced in response to the determined coupling exceeding a pre-determined threshold.

US Pat. No. 10,921,397

HYPERPOLARIZED MICRO-NMR SYSTEM AND METHODS

Memorial Sloan Kettering ...

1. A method of sample analysis, the method comprising:placing a sample within a micro coil, wherein the sample comprises a biological sample and a hyperpolarized substance comprising an active nucleus selected from the group consisting of 1H, 13C, 31P, 15N, 19F;
exposing the sample and micro coil to a B0 magnetic field; and
determining in real-time a metabolic flux of the sample via detection of an NMR signal for the sample;
wherein:
the biological sample comprises a member selected from the group consisting of a suspension of cells, a solid tissue sample, a porous structure encapsulating cells, a tumor organoid, proteins and/or metabolites, bacteria, yeast, an enzymatic system, and blue/green algae; and
the micro coil has a diameter of no greater than 5 mm.

US Pat. No. 10,921,396

SYSTEMS AND METHODS FOR SENSING EXTERNAL MAGNETIC FIELDS IN IMPLANTABLE MEDICAL DEVICES

Cardiac Pacemakers, Inc.,...

1. A method, comprising:sensing, using a sensing circuit, the presence of a magnetic field from a magnetic resonance imaging device, including using an isotropic material adapted to saturate as a result of magnetic field intensity independent of direction; and
measuring impedance connected to the isotropic material at programmed intervals; and
signaling, using a control circuit, when the measured impedance of the isotropic material changes by a prescribed amount.

US Pat. No. 10,921,395

IMAGE-GUIDED BIOPSY TECHNIQUES

GE PRECISION HEALTHCARE L...

1. A method for providing real-time image guidance for a biopsy, comprising:acquiring a plurality of MR images of an anatomical region of a patient;
acquiring a plurality of pre-biopsy ultrasound images of the anatomical region, wherein the MR images and the pre-biopsy ultrasound images are acquired simultaneously;
determining, by a processor, a plurality of respiratory states of the patient from the pre-biopsy ultrasound images, wherein the plurality of respiratory states include inhalation and exhalation, and a respective respiratory state is associated with one or more MR images;
indexing, by the processor, the MR images with their corresponding respective respiratory state; and
storing the MR images with their corresponding respective respiratory state.

US Pat. No. 10,921,394

VECTORIAL MAGNETOMETER AND ASSOCIATED METHODS FOR SENSING AN AMPLITUDE AND ORIENTATION OF A MAGNETIC FIELD

SOCPRA SCIENCES ET GENIE ...

1. A vectorial magnetometer, comprising:a sensory crystalline material substrate having defects sensitive to magnetic fields and oriented in at least three different orientations;
a spin-state-altering subsystem configured and adapted to emit spin-state-altering energy within the sensory crystalline material in pulses of varying durations in a manner to generate Rabi oscillations of the defects, the amplitude of the energy emitted within the sensory crystalline material being different for each one of the at least three orientations;
an interrogation subsystem configured and adapted to emit interrogation energy within the sensory crystalline material to generate a detectable intensity variation with the sensory crystalline material, the detectable intensity variation varying as a function of the spin-state of the defects, and a detector configured and adapted to measure the intensity of photons; and
a computer configured and adapted to
using the detection of the Rabi frequencies, generate association data in which the spin-state-altering energy values are associated with corresponding ones of the at least three defect orientations;
using the association data, calculate the orientation of the magnetic field relative to the orientation of the sensory crystalline substrate; and
generate a signal indicative of the orientation of the magnetic field.

US Pat. No. 10,921,393

MAGNETOMETER CHIP SENSOR ARRAY FOR READING A MAGNETIC PUF, INCLUDING A MAGNETIC PUF FILM OR TAPE, AND SYSTEMS INCORPORATING THE READER

LEXMARK INTERNATIONAL, IN...

1. A system comprising:a physical unclonable function (“PUF”) comprising
a substrate;
a plurality of magnetized particles randomly dispersed in the substrate;
a PUF reader constructed using multiple discrete magnetometer chips that by definition have magnetic field sensors, placed on a circuit card in an array with a sufficient center to center spacing between sensing elements of adjacent magnetometer chips,
wherein the PUF reader measures the magnetic field data at multiple locations in close proximity to the magnetized particles.

US Pat. No. 10,921,392

STACKED STRUCTURE, MAGNETORESISTIVE EFFECT ELEMENT, MAGNETIC HEAD, SENSOR, HIGH FREQUENCY FILTER, AND OSCILLATOR

TDK CORPORATION, Tokyo (...

1. A stacked structure which is positioned on a nonmagnetic metal layer, the structure comprising:a ferromagnetic layer; and
an intermediate layer interposed between the nonmagnetic metal layer and the ferromagnetic layer,
wherein the intermediate layer includes a NiAlX alloy layer represented by Formula (1),
Ni?1Al?2X?3  (1);
wherein X indicates one or more elements selected from the group consisting of Si, Sc, Ti, Cr, Mn, Fe, Co, Cu, Zr, Nb, and Ta, and satisfies an expression of 0 wherein a value of ?3 changes along an in-plane direction or a thickness direction.

US Pat. No. 10,921,391

MAGNETIC FIELD SENSOR WITH SPACER

Allegro MicroSystems, LLC...

1. A magnetic field sensor integrated circuit comprising:a lead frame having a first surface, a second opposing surface, and comprising a plurality of leads;
a substrate having a first surface supporting a magnetic field sensing element and a second, opposing surface attached to the first surface of the lead frame, wherein the magnetic field sensing element is configured to generate a magnetic field signal indicative of movement of a target proximate to the integrated circuit;
a magnet having a first surface and a second, opposing surface, and configured to generate a magnetic field;
a spacer positioned between the first surface of the magnet and the second surface of the lead frame and having a thickness selected to establish a predetermined distance between the first surface of the magnet and the magnetic field sensing element, the predetermined distance selected to provide the magnetic field signal as a sinusoidal signal; and
a non-conductive mold material enclosing the substrate, the spacer, and the magnet, such that at least a portion of at least one of the plurality of leads extends to an exterior surface of the non-conductive mold material.

US Pat. No. 10,921,390

MAGNETIC ATTACK DETECTION IN A MAGNETIC RANDOM ACCESS MEMORY (MRAM)

NXP USA, Inc., Austin, T...

1. An integrated circuit comprising:a magneto resistive RAM (MRAM) array comprising a plurality of MRAM cells;
a set of at least one Hall sensor circuit, each of the set including a Hall sensor to detect a magnetic field;
magnetic processing circuitry for receiving at least one indication from the set of at least one Hall sensor circuit, wherein the magnetic processing circuitry including an output to provide an indication of a possible magnetic field threat to the MRAM array based on the at least one indication from the set.

US Pat. No. 10,921,389

PLANAR HALL EFFECT SENSORS

BAR-ILAN UNIVERSITY, Ram...

1. A planar Hall effect (PHE) sensor for measuring at least one component of an external magnetic field, the sensor comprising:two elongated magnetic regions, each elongated magnetic region comprising a ferromagnetic material that is magnetized, in the absence of the external magnetic field, along a longitudinal axis along the elongated dimension of the elongated magnetic region, the longitudinal axes of the two magnetic regions being substantially perpendicular to one another, the elongated magnetic regions crossing one another at an overlap region at a midpoint of the longitudinal axis of each of the elongated magnetic regions, the overlap region being characterized by two easy magnetic axes, each easy magnetic axis along a different diagonal between the perpendicular longitudinal axes of the elongated magnetic regions;
two pairs of electrical leads, each pair connected to the overlap region and aligned along a different easy magnetic axis of said two easy magnetic axes;
a current source that, when connected to a first pair of said two pairs of electrical leads, is operable to cause a current to flow through the overlap region along a first easy magnetic axis with which the first pair is aligned; and
a voltage measurement device, when connected to electrical leads of the other pair of said at least two pairs of electrical leads and when the current flows through the overlap region along the first easy magnetic axis, configured to measure a PHE voltage that is generated by a component of the external magnetic field that is perpendicular to the easy magnetic axis along which the overlap region is magnetized.

US Pat. No. 10,921,388

MAGNETIC SENSOR WITH THREE DETECTION UNITS

TDK CORPORATION, Tokyo (...

1. A magnetic sensor comprising:a first detection unit for detecting a first component of an external magnetic field, the first component being in a direction parallel to a first direction;
a second detection unit for detecting a second component of the external magnetic field, the second component being in a direction parallel to a second direction;
a third detection unit for detecting a third component of the external magnetic field, the third component being in a direction parallel to a third direction; and
a support for supporting the first to third detection units, wherein
the first to third directions are orthogonal to each other,
the support has a reference plane orthogonal to the third direction,
the reference plane includes a first region, a second region, and a third region different from each other,
the first region is a region formed by vertically projecting the first detection unit onto the reference plane,
the second region is a region formed by vertically projecting the second detection unit onto the reference plane,
the third region is a region formed by vertically projecting the third detection unit onto the reference plane,
the first detection unit includes a first portion and a second portion located at different positions from each other,
the second detection unit includes a third portion and a fourth portion located at different positions from each other,
the first to fourth portions and the third detection unit each include at least one magnetic detection element,
the third detection unit further includes a soft magnetic structure formed of a soft magnetic material,
the first region includes a first partial region formed by vertically projecting the first portion onto the reference plane, and a second partial region formed by vertically projecting the second portion onto the reference plane,
the second region includes a third partial region formed by vertically projecting the third portion onto the reference plane, and a fourth partial region formed by vertically projecting the fourth portion onto the reference plane,
the first partial region and the fourth partial region are located on one side or opposite sides of the third region in a direction parallel to a first straight line, whereas the second partial region and the third partial region are located on one side or opposite sides of the third region in a direction parallel to a second straight line, the first straight line and the second straight line being two mutually orthogonal straight lines that pass through a centroid of the third region and are perpendicular to the third direction,
each of the first and second portions generates a detection value corresponding to the first component of the external magnetic field, and
each of the third and fourth portions generates a detection value corresponding to the second component of the external magnetic field.

US Pat. No. 10,921,385

SYSTEM AND METHOD FOR DIFFERENTIATING SHORTING IN A BATTERY

Celgard, LLC, Charlotte,...

1. A system for differentiating short-circuiting in a battery comprises:a sensor for measuring at least one of the following: temperature, energy, voltage, current, and resistance, said sensor being coupled to the battery during discharge;
a monitor in communication with the sensor, the monitor including a first storage device in which a plurality of predetermined profiles of battery shorting behavior is stored, the profiles include profiles based on empirically or mathematically modeled shorting behavior including temperature as a function of time and voltage as a function of time and are grouped as dangerous shorts and less dangerous shorts, and the monitor further includes a comparator for matching data from the sensors to the profiles;
a controller in communication with the monitor which includes a second storage device in which a list of predetermined actions, one such action for each type of short is stored and which discriminates between the dangerous shorts and the less dangerous shorts for aggressive response or passive response and selects one of the predetermined actions; and
an actuator in communication with the controller to effectuate the selected action, wherein said actuator is selected from the group consisting of a switch to shut off the battery with the dangerous short, a coolant system to cool the battery with the dangerous short, and a barricade to isolate the battery with the dangerous short.

US Pat. No. 10,921,384

DISCONNECTION SENSING CIRCUIT AND ELECTRICAL CONNECTION BOX

Sumitomo Wiring Systems, ...

1. A disconnection sensing circuit comprising:a control unit having a ground connection terminal and an input terminal;
a first external connection terminal capable of being connected to an external ground, the first external connection terminal being connected to a control-side ground line as a conduction path connected to the ground connection terminal;
a second external connection terminal capable of being connected to an external ground, the second external connection terminal being connected to a power-side ground line as a conduction path having a greater electrifying current than the control-side ground line; and
a transistor having a collector, a base and an emitter, the emitter coupled to a first bypass line, the input terminal connected to the collector and the base being connected to the control-side ground line, wherein the transistor restricts an electric power direction of the first bypass line connected between the control-side ground line and the power-side ground line to one direction, and that outputs a sensing signal corresponding to electric power flowing through the first bypass line to the input terminal.

US Pat. No. 10,921,383

BATTERY DIAGNOSTIC SYSTEM FOR ESTIMATING CAPACITY DEGRADATION OF BATTERIES

Mitsubishi Electric Resea...

1. A battery diagnostic system, comprising:a memory configured to store a set of capacity degradation models for batteries of a specific type, each capacity degradation model defines degradation of a battery capacity as a function of time, mapped to sets of battery cycle models formed by values of one or combination of voltages and currents measured for the batteries of the specific type at different capacities during one or combination of a charging cycle and a discharging cycle, such that each capacity degradation model is mapped to a set of battery cycle models associated with different battery capacities;
an input interface configured to accept measurements indicative of a battery cycle of a test battery and a current capacity of the test battery;
a processor configured to
compare the battery cycle of the test battery with the battery cycle models of different capacity degradation models associated with a value of the battery capacity closest to the current capacity of the test battery to select at least one battery cycle model closest to the battery cycle of the test battery;
retrieve from the memory the degradation capacity model mapped to the selected battery cycle model; and
estimate future degradation of the capacity of the test battery based on the retrieved capacity degradation model; and
an output interface configured to output the estimated future degradation of the capacity of the test battery.

US Pat. No. 10,921,382

BATTERY INFORMATION PROCESSING APPARATUS, BATTERY MANUFACTURING SUPPORT APPARATUS, BATTERY ASSEMBLY, BATTERY INFORMATION PROCESSING METHOD, AND METHOD OF MANUFACTURING BATTERY ASSEMBLY

Toyota Jidosha Kabushiki ...

1. A battery information processing apparatus which processes information for manufacturing a battery assembly constructed by alternately stacking a plurality of cells and a plurality of spacers, the battery information processing apparatus comprising:a battery information obtaining device configured to obtain information on a use history of the battery assembly used in a vehicle; and
an assembly information generator configured to generate assembly information for selecting a cell and a spacer to be used for manufacturing the battery assembly,
the assembly information generator being configured to generate any one of first assembly information and second assembly information by using the information on the use history,
the first assembly information indicating selection of a cell and a spacer determined as being higher in resistance against deterioration of a material for the cell than resistance against high-rate deterioration of the cell based on a prescribed indicator, and
the second assembly information indicating selection of a cell and a spacer determined as being higher in resistance against high-rate deterioration of the cell than resistance against deterioration of the material for the cell based on the indicator.

US Pat. No. 10,921,381

SYSTEMS AND METHODS FOR MONITORING AND PRESENTING BATTERY INFORMATION

NORTHSTAR BATTERY COMPANY...

1. A system comprising:a battery;
a monitor circuit embedded in or attached to the battery;
a processor in electronic communication with the monitor circuit; and
a tangible, non-transitory memory configured to communicate with the processor, the tangible, non-transitory memory having instructions stored thereon that, in response to execution by the processor, cause the processor to perform operations comprising:
receiving, by the processor, voltage data of the battery measured by the monitor circuit;
receiving, by the processor, temperature data of the battery measured by the monitor circuit;
storing, by the processor, a battery operating history comprising the voltage data and the temperature data in a battery operating history matrix that characterizes a Connected Operating History of the battery over a time period for which the battery monitor circuit is electrically connected to the battery, wherein the battery operating history matrix comprises:
a plurality of columns, each column representing a voltage range within which the battery operates, such that the plurality of columns covers all possible operating voltages of the battery;
a plurality of rows, each row representing a temperature range within which the battery operates, such that the plurality of rows covers all possible operating temperatures of the battery, wherein a numerical value in a cell of the battery operating history matrix represents a cumulative amount of time that the battery has been in a particular state corresponding to the voltage range and the temperature range for that cell, and wherein each total numerical value in each cell of the battery operating history matrix characterizes an entire time the battery monitor circuit has been connected to the battery; and
transmitting, by the processor, the Connected Operating History of the battery to a remote device for display of the Connected Operating History on a graphical user interface on a display screen.

US Pat. No. 10,921,380

METHOD FOR MEASURING THE INTERNAL RESISTANCE OF BATTERIES

MICROVAST POWER SYSTEMS C...

1. A method for measuring an internal resistance of batteries, the internal resistance comprising an ohmic internal resistance, a charge-transfer internal resistance and a diffusion internal resistance, the method comprising the following steps:providing a battery, and controlling a temperature of the battery to a measure temperature;
discharging/charging the battery under a preset constant-current I for a preset time and then ending the discharging/charging, acquiring voltages of the battery from a time ending the discharging/charging to a time when the voltage reaches stable;
recording a voltage V1 at the time ending the discharging/charging, a voltage V2 at a time when an ohmic overpotential disappears, a voltage V3 at a time when both the ohmic overpotential and an electrochemical overpotential disappear, and a voltage V4 at a time when all of the ohmic overpotential, the electrochemical overpotential and a concentration overpotential disappear; and
calculating at least one of the ohmic internal resistance, the charge-transfer internal resistance and the diffusion internal resistance separately based on the preset constant-current I and at least one of necessary voltages selecting from V1, V2, V3 and V4.

US Pat. No. 10,921,379

SYSTEMS AND METHODS FOR DETECTING ABNORMALITIES IN ELECTRICAL AND ELECTROCHEMICAL ENERGY UNITS

California Institute of T...

1. A method for abnormality detection in an energy unit, comprising:exposing the energy unit to an electromagnetic signal;
the step of exposing the unit to an electromagnetic signal comprising passing a current through a transmitter or applying a voltage to a transmitter, the transmitter positioned proximate to the energy unit for transmitting the electromagnetic signal; wherein the transmitter comprises a pickup coil; and
measuring an electrical signal induced in the energy unit by the electromagnetic signal, thereby detecting the abnormality.

US Pat. No. 10,921,378

SYSTEM FOR MEASURING VOLTAGE DIFFERENCES BETWEEN BATTERY CELLS AND FOR OBTAINING BATTERY CELL VOLTAGES USING THE VOLTAGE DIFFERENCES

Ford Global Technologies,...

1. A system comprising:a capacitor;
a processor; and
a controller configured to connect the capacitor in parallel with a cell to charge the capacitor to a voltage of the cell and then connect the capacitor in series with a voltage source to form a circuit having an output that is a voltage difference of the capacitor and the voltage source and connect the output to the processor for the processor to measure the voltage difference.

US Pat. No. 10,921,377

FUEL GAUGE SYSTEM FOR MEASURING THE AMOUNT OF CURRENT IN BATTERY AND PORTABLE ELECTRONIC DEVICE INCLUDING THE SAME

Samsung Electronics Co., ...

1. A fuel gauge system comprising:a first switch;
a second switch connected in parallel to the first switch;
a controller configured to output a first switching signal to the first switch and a second switching signal to the second switch; and
a fuel gauge circuit configured to measure a battery current flowing from the first switch to a battery and from the second switch to the battery,
wherein the first switch is enabled based on the first switching signal,
wherein the second switch is enabled based on the second switching signal,
wherein the fuel gauge circuit includes an amplifier configured to sense potentials of the both ends of the first switch and the both ends of the second switch, and an analog-to-digital converter (ADC) configured to output a digital signal based on a voltage difference received from the amplifier.

US Pat. No. 10,921,376

SENSOR APPARATUS FOR MONITORING AT LEAST ONE BATTERY CELL

Robert Bosch GmbH, Stutt...

1. A sensor apparatus (10) for monitoring at least one battery cell (20) of a battery system (100), the sensor apparatus comprising a sensor element (11) for detecting at least one state variable of the at least one battery cell (20), and at least one electrically and/or thermally conductive connecting element connected to the sensor element (11), the conductive connecting element being configured to press the sensor element onto the at least one battery cell (20) and being configured to connect the sensor element to an electronic unit (30) of the battery system (100), wherein the at least one connecting element is formed as a flexible printed circuit board (12).

US Pat. No. 10,921,375

LOW VOLTAGE RIDE-THROUGH TEST APPARATUS AND METHOD OF USING SAME

Saudi Arabian Oil Company...

1. A ride-through test apparatus for providing a predetermined voltage drop on a control circuit of a motor starter comprising:a housing having an interior;
a variable transformer mounted in the housing interior and having a primary winding and a secondary winding, the primary winding being electrically connected to an input voltage from an external alternating current (AC) power source and the secondary winding coupled to a pair of output terminals, the pair of output terminals being configured for electrical connection to input terminals of the control circuit of the motor starter, the variable transformer having a control knob accessible from an exterior portion of the housing for manually setting magnitude of a voltage potential on the secondary winding;
a programmable logic circuit (PLC) mounted in the housing interior and including a plurality of programmable timers electrically coupled to the pair of output terminals, the plurality of timers having outputs and being programmed to sequentially turn on and off for selectively controlling voltage potential magnitude and duration at the pair of output terminals based on clock cycles of the input voltage; and
a first switch electrically coupled to the PLC for activating the timers to sequentially provide (i) the AC input voltage at the pair of output terminals for a first predetermined time, (ii) the predetermined voltage drop having a magnitude corresponding to the voltage potential on the secondary winding of the variable transformer for a second predetermined time after the first predetermined time lapses, and (iii) the AC input voltage at the pair of output terminals after the second predetermined time lapses.

US Pat. No. 10,921,374

DIAGNOSIS DEVICE, ENERGY STORAGE APPARATUS, AND DIAGNOSIS METHOD

GS Yuasa International Lt...

1. A diagnosis device that diagnoses current cutoff devices connected in parallel and disposed on an energization path to an energy storage device mounted on a vehicle, the diagnosis device comprising a processor configured to:detect a parameter indicative of the vehicle being parked, the parameter being either: (1) an electrical current value that is equal to or smaller than a predetermined value for at least a first predetermined time; or (2) a lack of communication between the diagnosis device and a vehicle electronic control unit for at least a second predetermined time;
upon detecting the parameter indicative of the vehicle being parked, perform switch processing of switching one of the current cutoff devices to be diagnosed from an opened state to a closed state or from the closed state to the opened state or keeping closed the one of the current cutoff devices and switching closed or keeping closed another of the current cutoff devices while the parameter remains indicative of the vehicle being parked;
detect end-to-end voltage when current larger than a threshold flows through an end point A and an end point B after the switch processing, the current cutoff devices being connected to the end point A and the end point B in parallel, the threshold being set based on a peak value of cranking current that flows from the energy storage device to a starter at a start of an engine;
diagnose the one of the current cutoff devices based on the detected end-to-end voltage; and
close both of the current cutoff devices while the vehicle is travelling after the detection of the end-to-end voltage in a case in which the one of the current cutoff devices being diagnosed is switched from the closed state to the opened state through the switch processing while the vehicle is parked.

US Pat. No. 10,921,373

MAGNETIC FIELD SENSOR ABLE TO IDENTIFY AN ERROR CONDITION

Allegro MicroSystems, LLC...

1. A method of determining an error condition in a magnetic field sensor, comprising:receiving a first bridge signal, the first bridge signal generated by a first full bridge circuit;
receiving a second bridge signal, the second bridge signal generated by a second full bridge circuit;
determining a bridge separation from the first bridge signal and the second bridge signal, wherein the determining the bridge separation comprises dividing the first bridge signal by the second bridge signal or dividing the second bridge signal by the first bridge signal;
comparing a function of the bridge separation to a threshold value; and
generating an error signal indicative of the error condition or not indicative of the error condition in response to the comparing.

US Pat. No. 10,921,372

RAPID SCAN TESTING OF INTEGRATED CIRCUIT CHIPS

Seagate Technology LLC, ...

15. A tester coupleable to an integrated circuit (IC) chip under test, the tester comprising:tester inputs and tester outputs for the IC chip under test having a plurality of input/output (I/O) pins, the plurality of I/O pins including high speed and low speed I/O pins, the tester inputs communicatively coupled to the high speed I/O pins and not coupled to any of the low speed I/O pins; and
a driver to pump scan patterns and expected results from the tester inputs to the high speed I/O pins to enable the IC chip to carry out scan test operations internal to the IC chip using the scan patterns and the expected results to determine a scan test result.

US Pat. No. 10,921,371

PROGRAMMABLE SCAN SHIFT TESTING

SEAGATE TECHNOLOGY LLC, ...

1. A integrated circuit (IC) comprising:multiple scan chains each including a series of scan-flops;
a plurality of leading gates each functioning as an on/off trigger for a corresponding one of the multiple scan chains, each of the plurality of leading gates having a first gate input configured to receive a test pattern programmed via a first scan-in port and a second gate input configured to receive an on/off scan chain indicator programmed via a second scan-in port;
a group of scan-flops external to the multiple scan chains, each scan-flop in the group being directly connected to an associated gate of the plurality of leading gates and storing the on/off scan chain indictor for the associated gate, the on/off scan chain indicator functioning to configure a corresponding one of the multiple scan chains in an on or off state.

US Pat. No. 10,921,370

OPTOELECTRONIC CHIP AND METHOD FOR TESTING PHOTONIC CIRCUITS OF SUCH CHIP

STMICROELECTRONICS (CROLL...

1. An optoelectronic chip comprising:a pair of optical inputs having a same bandwidth and being each adapted to a different polarization;
a photonic circuit to be tested; and
an optical coupling device configured to couple the pair of optical inputs to the photonic circuit to be tested, wherein the optical coupling device comprises an evanescent coupler, the pair of optical inputs and the optical coupling device being a part of the optoelectronic chip.

US Pat. No. 10,921,369

HIGH PRECISION OPTICAL CHARACTERIZATION OF CARRIER TRANSPORT PROPERTIES IN SEMICONDUCTORS

XCalipr Corporation

1. A method of determining at least one electronic transport property of a semiconducting sample, the method comprising the steps of:(a) directing an amplitude modulated pump laser beam onto an area of a surface of the sample, wherein the pump laser beam comprises at least one wavelength with energy greater than the smallest interband transition energy of a semiconductor material within the sample, thereby inducing time periodic changes in electronic charge density within the sample such that the reflectance of the sample obtains a time periodic modulation;
(b) directing a second probe laser beam onto an area of the surface of the sample, said area obtaining the time periodic modulated reflectance of step (a), wherein the probe laser beam comprises at least one wavelength suitable for detecting the induced changes in the reflectivity of the sample;
(c) collecting and directing the probe light reflected from the sample into a photoreceiver which produces an electrical output in response thereto, said output comprising a photo-modulated reflectance signal;
(d) measuring the photo-modulated reflectance signal using a phase-locked detection circuit;
(e) performing a series of photo-modulated reflectance measurements of steps (a), (b), (c) and (d), with the surface of the sample at a plurality of distances from the focal plane of the pump laser beam;
(f) performing a nonlinear regression analysis using the information collected in steps (a), (b), (c), (d) and (e) wherein the nonlinear regression analysis uses at least one electronic transport property of the sample as a variable parameter to determine said at least one electronic transport property of the sample; and
(g) reporting at least one determined electronic transport property of the sample.

US Pat. No. 10,921,368

TESTING AND CALIBRATION OF A CIRCUIT ARRANGEMENT

BOEHRINGER INGELHEIM VETM...

12. Circuit arrangement, comprising:a sensor electrode,
a first circuit unit that is electrically coupled to the sensor electrode, and
a second circuit unit that comprises a first capacitor;
wherein the first circuit unit is configured so as to keep the electrical potential of the sensor electrode in a specifiable first reference range around a specifiable target electrical potential by the first capacitor and the sensor electrode being coupled such that matching of the electrical potential is possible;
wherein the second circuit unit is configured such that, if the electrical potential of the first capacitor is outside a second reference range, the second circuit unit detects this event and brings the first capacitor to a first electrical reference potential, and
wherein a connectible reference current source is provided at the sensor electrode, the reference current source providing a known reference current when the reference current source is connected to the sensor electrode, such that the reference current is injected into at least one of the sensor electrode and said circuit unit, and
wherein the circuit arrangement has at least one of the following features:
the circuit arrangement being configured and the reference current source being adjustable such that reference current source injects into the sensor electrode no reference current as well as a first reference current having a first current strength and at least one second reference current having a second current strength that is different from the first current strength;
the circuit arrangement being configured to determine electrical energy transmitted from the sensor electrode to the first circuit unit, both when the reference current source is deactivated and when said source is connected, as measurement results, such that at least one of a short circuit of the sensor electrode and a connection problem between the sensor electrode and the first circuit unit can be determined from the measurement results; and
the reference current source being selectively connectable to a first portion and to another, second portion of the sensor electrode, such that the reference current is injected into the first portion or into the second portion, wherein the first portion forms part of an interdigital structure and the second portion is provided in the region of a connection line or wiring between the interdigital structure and the first circuit unit.

US Pat. No. 10,921,367

STABLE MEASUREMENT OF SENSORS METHODS AND SYSTEMS

ANALOG DEVICES, INC., No...

1. An apparatus for making gain independent reference channel measurements, the apparatus comprising:a first circuit configured to measure a stimulus passing through a testing object;
a first amplifier;
a second circuit configured to measure a stimulus which has not passed through the test volume;
a second amplifier; and
a switching circuit in electrical communication with the first circuit, second circuit, first amplifier and second amplifier, the switching circuit configured to change between:
a first mode wherein first circuit is in electrical communication with the first amplifier and the second circuit is in electrical communication with the second amplifier; and
a second mode wherein first circuit is in electrical communication with the second amplifier and the second circuit is in electrical communication with the first amplifier.

US Pat. No. 10,921,366

DETECTION DEVICE AND DETECTION METHOD

BOE Technology Group Co.,...

1. A detection device comprising a memory configured to store computer-readable programs and a processor, wherein the processor is configured to execute the computer-readable programs to:control an externally connected power source of the display device to be switched on and off alternately; and
detect voltage values of one or more components to be powered of the display device when the externally connected power source is switched off, compare the voltage values with pre-stored reference voltage values, and in response to that a result of the comparison between these voltage values exceeds a preset threshold, determine a failure of the display device which is powered off;
wherein the detection device further comprises a camera, and the processor is configured to execute the computer-readable programs to:
compare a chroma value of an image captured by the camera on a display screen when the externally connected power source of the display device is switched off with a chroma value of a pre-stored reference image, and in response to that a difference between these chroma values exceeds the preset threshold, determine a failure of the display device which is powered off;
wherein the processor is configured to execute the computer-readable programs to:
before controlling the externally connected power source of the display device to be powered on and off alternately, detect communication between a master control chip in the display device, and a solid-state memory in the display device, and control the externally connected power source of the display device to be powered on and off alternately upon detecting normal communication between the master control chip and the solid-state memory.

US Pat. No. 10,921,365

HIGH-POTENTIAL TESTING OF CONDUCTIVE LANDS OF A PRINTED CIRCUIT BOARD

Arista Networks, Inc., S...

1. A method of testing a printed circuit board, comprising:accessing a list of conductive lands of a printed circuit board to be tested;
for each conductive land of the list of conductive lands, subjecting the conductive land to an adjacency test to determine one or more conductive lands that are adjacent to the conductive land; and
for the printed circuit board and each conductive land of the list of conductive lands, subjecting the conductive land and each of the one or more conductive lands that are adjacent to the conductive land to high-potential testing.

US Pat. No. 10,921,364

STRUCTURE AND TESTING DEVICE FOR MEASURING THE BONDING STRENGTH OF THE LIGHT-EMITTING PANEL

Wuhan China Star Optoelec...

10. A testing device for measuring a bonding strength of a light-emitting panel, comprising:a mechanical arm and a slide rail, the mechanical arm being connected to the slide rail by a pulley at the end; and
the mechanical arm is configured to fit a non-bonding portion of a flip chip film so that the non-bonding portion covers a bonding portion of the flip chip film, and the non-bonding portion is stretched to measure a bonding strength between the flip chip film and a substrate.

US Pat. No. 10,921,363

SYSTEMS AND METHODS FOR BREAK DETECTION

Cable Television Laborato...

1. A system for detecting a failure along a transmission line of a cable plant, comprising:a mobile vehicle configured to travel along a pathway at a separation distance substantially perpendicular to and proximate to the cable plant along a lengthwise span of the transmission line; and
a transmitter disposed with the mobile vehicle, and configured to emit (i) a continuous wave radio frequency (RF) test signal capable of ingressing the transmission line at a location of the failure, and (ii) an information signal, different from the continuous wave RF test signal, containing location and velocity data of the mobile vehicle,
wherein the continuous wave RF test signal is configured to provide frequency spectrum information to a receiver operably connected to the transmission line at a location upstream from the location of the failure, whereby receipt of the continuous wave RF test signal at the receiver enables the receiver to analyze the frequency spectrum information over time for phase shift information and Doppler frequency information with respect to the separation distance from the vehicle to the cable plant.

US Pat. No. 10,921,362

SENSOR FOR MEASUREMENT OF ELECTROSTATIC POTENTIAL WITHOUT CURRENT LOADING AND WITHOUT MECHANICAL CHOPPING

United States of America ...

1. An electric field detecting system comprising:a first metal plate;
a second metal plate;
a sensor having a first metal layer, a second metal layer and a non-linear permittivity dielectric material disposed between said first metal layer and said second metal layer, said first metal layer being electrically connected to said first metal plate, said second metal layer being electrically connected to said second metal plate; and
a detector operable to detect a voltage between said first metal layer and said second metal layer and to determine a magnitude of the electric field based on the detected voltage and a priori information related to a variable capacitance of said non-linear permittivity dielectric material.

US Pat. No. 10,921,361

ELECTROMAGNETIC INTERFERENCE PATTERN RECOGNITION TOMOGRAPHY

EMTensor GmbH, Vienna (A...

1. An Electromagnetic Interference Pattern Recognition Tomography (EMIPRT) method for use in an image reconstruction system, comprising:via an electromagnetic tomography system, generating electromagnetic field data corresponding to an object in an imaging domain, wherein the electromagnetic field data is measured at a plurality of receivers after being produced at a plurality of transmitters and interacting with the object; and
using the generated electromagnetic field data, repeatedly, in recursive manner:
forming an undisturbed electromagnetic interference image,
forming a disturbed electromagnetic interference image based at least in part on the undisturbed electromagnetic interference image,
recognizing electromagnetic interference patterns in the repeatedly formed disturbed electromagnetic interference images, and
forming a superposition image by nullifying or diminishing the recognized electromagnetic interference patterns from the disturbed electromagnetic interference image;
wherein the step of forming a disturbed electromagnetic interference image based at least in part on the undisturbed electromagnetic interference image includes forming a disturbed electromagnetic interference image based at least in part on determination of an object factor that is a functional of the differences between experimental electromagnetic fields and electromagnetic fields calculated during the step of forming an undisturbed electromagnetic interference image; and
wherein the object factor is determined as
where EzijSim or Exp is the experimentally simulated or measured value, respectively, of a z-component of the electromagnetic field measured by receiver j when transmitter i is the source of the electromagnetic field, where M?J is presented in a general form as ?*f(EijExp)+?*(?ij ?ij*?ij Eij)+?*?, where ?, ? and ? are coefficients of real non-zero or zero values, where ? is a regularization operator, and where f(EijExp) is a function of its argument.

US Pat. No. 10,921,360

DUAL MAGNETIC AND ELECTRIC FIELD QUARTZ SENSOR

HRL Laboratories, LLC, M...

1. A radio frequency (RF) field sensor in which a magnetostrictive film is disposed on one or more electrodes of one or more quartz resonator(s) in which:an electric field of the RF field is detected along one axis of the RF field sensor and a magnetic field of the RF field is detected along an orthogonal axis of the RF field sensor independently of detection of the electric field.

US Pat. No. 10,921,359

IMPEDANCE MEASURING SEMICONDUCTOR CIRCUIT

RENESAS ELECTRONICS CORPO...

1. An impedance measuring semiconductor circuit for measuring impedances of a first sensor and a second sensor, the impedance measuring semiconductor circuit comprising:a first resistance element having a first end and a second end;
an operational amplifier that includes a positive input terminal, a negative input terminal, and an output terminal, the positive input terminal receiving a predetermined set voltage, the output terminal being coupled to the first end of the first resistance element;
a first output-side switch coupled so as to electrically couple or decouple the first sensor and the second end of the first resistance element;
a second output-side switch coupled so as to electrically couple or decouple the second sensor and the second end of the first resistance element;
a first input-side switch coupled so as to electrically couple or decouple the first sensor and the negative input terminal; and
a second input-side switch coupled so as to electrically couple or decouple the second sensor and the negative input terminal.

US Pat. No. 10,921,358

CLEANING METHODS FOR PROBE CARDS

Winbond Electronics Corp....

1. A testing system for testing a device under test, wherein the device under test comprises a plurality of circuits under test, comprising:a probe card, comprising a plurality of probes, wherein the probes are configured to be temporarily coupled to the circuits under test;
testing equipment, holding the probe card and testing the circuits under test through the probe card; and
a controller, controlling the testing equipment and executing a testing method, wherein the testing method comprises:
measuring contact resistance values between the probe card and each of the circuits under test;
determining a statistical value of the contact resistance values;
determining whether the statistical value exceeds a first threshold;
when the statistical value does not exceed the first threshold, setting a cleaning flag to be in a first state;
when the statistical value exceeds the first threshold, setting the cleaning flag to be in a second state; and
performing a cleaning operation on the probes according to the cleaning flag.

US Pat. No. 10,921,357

METHOD AND APPARATUS FOR MEASURING RESISTANCE OF LIGHT EMITTING DIODE

INDUSTRY-UNIVERSITY COOPE...

1. A device for measuring resistance of a light-emitting diode, the device comprising:a current component separation part configured to separate an injected current for the light-emitting diode into a radiative current component and a non-radiative current component by using an internal quantum efficiency of the light-emitting diode;
a modeling part configured to model the radiative current component by using an ideality factor of the radiative current component determined in a preconfigured injected current region; and
an approximation part configured to determine a resistance value for the radiative current component by approximating a difference between a voltage resulting from the radiative current component and a voltage obtained as a result of the modeling,
wherein the current component separation part measures the radiative current component or the non-radiative current component according to the following equation:
IR=IQE·I
INR=(1?IQE)·I
where, IR corresponds to the radiative current component,
INR corresponds to the non-radiative current component,
I corresponds to the injected current, and
IQE corresponds to the internal quantum efficiency,
wherein the modeling part models the radiative current component by substituting the determined ideality factor of the radiative current component into a Shockley diode equation for the radiative current component.

US Pat. No. 10,921,356

OPTICAL RF SPECTRUM ANALYSER

The University of Sydney,...

1. An optical RF spectrum analyser comprising:an optical modulator to modulate an input RF signal onto a carrier frequency to generate a modulated optical signal;
an optical spectral weight module having a spectral weight function to modify the modulated optical signal, the optical spectral weight module defining a frequency relationship between the spectral weight function and the carrier frequency;
a frequency control module to modify the frequency relationship between the spectral weight function and the carrier frequency over time by performing a sweep across a frequency range to modify the carrier frequency and the modulated optical signal to generate a modified optical signal over time;
an optical sensor to sense the modified optical signal over time and to generate an RF signal over time based on the modified optical signal;
a signal recovery module to calculate the RF spectrum based on the RF signal over time.

US Pat. No. 10,921,355

METHOD AND SYSTEM FOR DETECTING USEFUL SIGNALS, WITH RESPECTIVE NON-NEGLIGIBLE FREQUENCY DRIFT, IN A TOTAL SIGNAL

AIRBUS DEFENCE AND SPACE ...

1. A method for detecting a plurality of useful signals in a total signal, each useful signal being of a finite duration and subjectable to a frequency drift that is greater, over the duration of said each useful signal, than a spectral width of said each useful signal, the plurality of useful signals corresponding to radiofrequency signals transmitted by terminals in a multiplexing frequency band, the total signal corresponding to all of the radiofrequency signals received in the multiplexing frequency band, the method comprising:calculating multiple spectrograms associated with linear frequency drift values, respectively, each spectrogram being representative of values of a frequency spectrum of the total signal at analysis frequencies in the multiplexing frequency band, and of time variations of the values of the frequency spectrum at analysis times within an analysis time window by compensating for a linear frequency drift under consideration;
for each analysis frequency and each spectrogram, time envelope filtering of the values of the frequency spectrum at the analysis times of said each spectrogram at said each analysis frequency, using a filter representative of a reference time envelope of the plurality useful signals; and
detecting a useful signal at an analysis time and at an analysis frequency in response to a verification of a predefined detection criterion by a filtered spectrogram for said analysis time and said analysis frequency, the filtered spectrogram being a value of a spectrogram obtained by the time envelope filtering.

US Pat. No. 10,921,354

POWER GRID ELECTRIC TRANSIENT DETECTOR, METHOD FOR DETECTING POWER GRID ELECTRIC TRANSIENTS AND ELECTRIC MANAGEMENT SYSTEM WITH POWER GRID ELECTRIC TRANSIENT DETECTION

3R VALO LIMITED PARTNERSH...

1. A power grid electric transient detector comprising:an input for receiving an electric parameter for electricity received from a power grid at a consuming facility;
a digital filter for extracting transients of the electric parameter of the electricity received;
a processor for analyzing the transients of the electric parameter and generating a power grid performance index based on the analyzed transients of the electric parameter, the power grid performance index consisting of one of the following: a power grid estimated incentive message and a power grid estimated control message.

US Pat. No. 10,921,353

SYSTEMS, DEVICES, AND METHODS FOR A WIDE DYNAMIC RANGE CURRENT MEASUREMENT WITH CONSUMPTION EVENT ANALYSIS

1. A method for validating energy consumed by a battery powered device under test, the method comprising:at a current measurement instrument including a current sensor connected in series between a power supply and the device under test being powered by the power supply:
using the current sensor to measure samples of current flowing from the power supply to the device under test;
transferring the measured samples of current to a processor on a per sample basis;
using the processor for:
summing the samples of current on a per sample basis for calculating total energy consumption of the device under test;
storing the summation of the samples of current as a summary statistic on a per sample basis;
monitoring each sample of current on a per sample basis to determine whether a level of the sample of current exceeds a predetermined threshold level; and
in response to determining that the level of the sample of current exceeds the predetermined threshold level:
determining that the device under test is in a current event;
creating an event data item that indicates a timestamp indicating when the predetermined threshold level was exceeded, a summation of current samples that occurred above the predetermined threshold level, and the amount of time that the samples of current were above the predetermined threshold level; and
storing, subsequent to determining that the current is lower than the predetermined threshold level, the event data item in a log of one or more event data items for use in analysis of the energy consumption of the device under test.

US Pat. No. 10,921,352

PRECISION CURRENT SENSING USING LOW COST SENSE RESISTANCE

Chrontel Inc., San Jose,...

1. A process, comprising:a method to accurately measure current in a low-cost non-precision current sense resistance, comprising:
configuring a circuit to sense current in a low-cost non-precision current sense resistance, wherein the circuit comprises a current supply connected in series with the low-cost non-precision current sense resistance;
adapting the circuit to measure a voltage drop generated by the current supply across the low-cost non-precision current sense resistance when the current supply is activated;
calibrating the circuit to correct inaccuracy measured in the sensed current; and,
measuring with the calibrated circuit the precise current sensed in the low-cost non-precision current sense resistance.

US Pat. No. 10,921,351

ELECTRONIC SYSTEM, SENSING CIRCUIT AND SENSING METHOD

Wistron Corporation, New...

1. A sensing circuit, for sensing a working status of a real-time clock (RTC) module, comprising:a comparator module, coupled to the real-time clock module, for receiving an initial voltage of the real-time clock module, and comparing the initial voltage with a threshold voltage, to generate a comparison result; and
a storage module, coupled to the comparator module, for storing the comparison result and delivering the comparison result to a host circuit;
wherein the host circuit determines whether the working status of the real-time clock module is normal or abnormal according to the comparison result;
wherein the initial voltage is a voltage of a node of the real-time clock module when the real-time clock module is just switched from being supplied by a battery of the real-time clock module to be supplied by a power end.

US Pat. No. 10,921,350

VOLTAGE TESTING SYSTEM

1. A voltage testing system, comprising:a pair of probes, each comprising an identical housing having a first end and a second end;
wherein the pair of probes are electrically connected by a wire affixed to the first end of each of the pair of probes;
a prong extending from the second end of each of the pair of probes;
wherein a pin is affixed to each prong, the pin configured to conduct electricity therethrough;
a fuse in electrical communication with the pin, wherein the fuse is configured to sever the electrical connection when a set current is transmitted therethrough;
a plurality of lights disposed within each housing, the plurality of lights in electrical communication with each pin;
wherein the plurality of lights are configured to illuminate at a preset voltage.

US Pat. No. 10,921,349

PIEZOELECTRIC PACKAGE-INTEGRATED CURRENT SENSING DEVICES

Intel Corporation, Santa...

1. A current sensing device, comprising:a released base structure that is positioned in proximity to a cavity of an organic substrate, wherein the released base structure is a conductive structure; and
a piezoelectric film stack positioned in proximity to the released base structure, the piezoelectric film stack includes a piezoelectric material in contact with first and second electrodes, wherein a magnetic field is applied to the current sensing device and this causes movement of the released base structure and the piezoelectric stack which induces a voltage between the first and second electrodes.

US Pat. No. 10,921,348

MODULAR DEVICE ARCHITECTURE

1. A modular RF measuring device, comprising:a motherboard arranged centrally within the device so as to define a front side and a rear side, the front side and the rear side each comprising module interfaces, at least two measuring modules being received within insertion slots on the front side of the motherboard and the measuring modules each having a recessed portion at a face opposite to the motherboard, with an RF connector being arranged at the edge of the recessed portion of each measuring module, wherein one or more RF cables are provided which connect the RF connector of one of the measuring modules to the RF connector of another one of the measuring modules.

US Pat. No. 10,921,347

SENSOR AND METHOD FOR DIAGNOSING SENSOR

PANASONIC INTELLECTUAL PR...

1. A sensor comprising:an element that outputs a detection signal according to magnitude of a physical quantity;
a drive circuit that outputs a driving signal to the element and receives a monitor signal from the element;
a detection circuit inputting the detection signal and outputting a physical quantity signal according to the physical quantity;
wherein the detection circuit includes,
a phase-locked loop (PLL) circuit that multiplies the frequency of the signal that is input from the drive circuit,
a clock oscillation circuit,
a frequency counter compares the frequency of the signal that is output from the PLL circuit with the frequency of the signal that is output from the clock oscillation circuit, and then outputs a difference in the frequencies as a signal, and
a diagnostic circuit that inputs the signal of the difference in the frequencies,
and wherein,
the detection circuit detects an abnormality of the clock oscillation circuit or an abnormality of the PLL circuit according to the frequency of the signal inputting from the PLL circuit and the frequency of the signal inputting from the clock oscillation circuit.