US Pat. No. 9,602,648

ADAPTER DEVICES FOR ENHANCING THE FUNCTIONALITY OF OTHER DEVICES

KEYSSA SYSTEMS, INC., Ca...

7. An adapter device for use in communicating with a first electronic device and a second electronic device, the adapter device
comprising:
an adapter memory component;
a first connector operative to maintain a first communications link with the first electronic device;
a second connector operative to maintain a second communications link with the second electronic device; and
an adapter host subsystem comprising:
a switch module communicatively coupled to the second connector; and
a hub comprising:
an upstream port; and
a plurality of downstream ports, wherein:
a first portion of the upstream port is communicatively coupled to the first connector; and
a second portion of the upstream port is communicatively coupled to the switch module.

US Pat. No. 9,673,963

MULTI-PROTOCOLS AND MULTI-DATA RATES COMMUNICATIONS

Keyssa Systems, Inc., Ca...

1. A method for generating a data signal and a clock signal, the method comprising:
receiving an input data signal transmitted without a reference clock signal;
generating, by a clock regeneration loop and based on the input data signal, an output reference clock signal having an adjustable
clock frequency that matches a data rate of the input data signal;

generating, by a data detection loop and based on the input data signal, a phase offset control signal for adjusting a phase
of a clock signal that samples the input data signal;

generating, by the data detection loop and based on the phase offset control signal, a sampled input data signal;
storing, by an elastic buffer, an overflowing portion or an under-flowing portion of the sampled input data signal resulting
from a frequency difference between the output reference clock signal and the sampled input data signal; and

generating, by the elastic buffer and based on the stored overflowing portion or the under-flowing portion of the sampled
input data signal, an output data signal that aligns with the output reference clock signal,

wherein the data detection loop includes a delay locked loop, a phase interpolator, and a phase detector,
wherein generating the phase offset control signal further comprises:
generating, by the delay locked loop and based on the output reference clock signal, a phase-locked clock signal;
generating, by the phase interpolator and based on the phase-locked clock signal and the phase offset control signal from
the phase detector, a phase-adjusted clock signal;

determining, by the phase detector, a phase difference between the phase-adjusted clock signal and the input data signal;
and

adjusting, by the phase detector and based on the phase difference, the phase offset control signal.

US Pat. No. 9,813,539

ADAPTER DEVICES FOR ENHANCING THE FUNCTIONALITY OF OTHER DEVICES

KEYSSA SYSTEMS, INC., Ca...

1. An adapter device for use in communicating with a first electronic device and a second electronic device, the adapter device
comprising:
an adapter memory component;
a first connector operative to maintain a first communications link with the first electronic device;
a second connector operative to maintain a second communications link with the second electronic device; and
an adapter host subsystem communicatively coupled to each one of the adapter memory component, the first connector, and the
second connector, wherein:

the adapter host subsystem is operative to switch between enabling a first communications path between the adapter memory
component and the first communications link via the first connector and enabling a second communications path between the
adapter memory component and the second communications link via the second connector;

each of the first and second communication links comprises one of a contactless communication link, a wireless communications
link, and a mechanical communications link;

the first communications link is operative to communicate data between the first connector and the first electronic device
according to a first communications protocol;

the second communications link is operative to communicate data between the second connector and the second electronic device
according to a second communications protocol;

the adapter host subsystem comprises a controller;
the first communications path comprises at least a first portion of the controller between the adapter memory component and
the first communications link;

the second communications path comprises at least a second portion of the controller between the adapter memory component
and the second communications link;

when the first communications path is enabled, data is communicated along the first communications path according to the first
communications protocol; and

when the second communications path is enabled, data is communicated along the second communications path according to the
second communications protocol.

US Pat. No. 9,887,169

SIGNAL ISOLATION STRUCTURES FOR EM COMMUNICATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:
a communication module, including:
a printed circuit board;
one or more integrated circuit packages, each integrated circuit package including at least one transmitter, receiver, or
transceiver; and

one or more metallic blocking structures configured to at least partially encircle a corresponding one of the integrated circuit
packages, wherein a first metallic blocking structure includes a first portion substantially perpendicular to the printed
circuit board and extending from the printed circuit board toward a device housing and a second portion substantially parallel
to the printed circuit board and partially overlapping a first integrated circuit package, and wherein each metallic blocking
structure is configured to reduce signal leakage from the corresponding integrated circuit package.

US Pat. No. 9,863,976

MODULE TEST SOCKET FOR OVER THE AIR TESTING OF RADIO FREQUENCY INTEGRATED CIRCUITS

Keyssa Systems, Inc., Ca...

1. A test system for testing an integrated circuit Device-Under-Test (DUT), the DUT including a radiative element that emits
close-proximity radio frequency (RF) electromagnetic radiation, the test system comprising:
a test socket that holds the DUT during testing;
an interface board electrically connected between tester instrumentation and electrical contacts of the DUT during testing;
a waveguide integrated into the test socket, the waveguide having a first end positioned to receive the RF electromagnetic
radiation side emitted by the DUT during testing, the waveguide relaying the RF electromagnetic radiation to the tester instrumentation;

a reflective plane positioned below the DUT to reflect the RF electromagnetic radiation, the reflective plane increasing coupling
of the RF electromagnetic radiation from the DUT into the waveguide; and

a position adjustment mechanism to adjust a position of the reflective plane relative to a position of the DUT.

US Pat. No. 9,927,854

POWER SEQUENCING CIRCUITRY AND METHODS FOR SYSTEMS USING CONTACTLESS COMMUNICATION UNITS

KEYSSA SYSTEMS, INC., Ca...

1. A directed contactless communications system, comprising:a host device comprising:
a first interface;
a host controller coupled to the first interface; and
first power sequence assistance (PSA) circuitry coupled to the first interface and the host controller, the first PSA circuitry comprising:
host delay circuitry coupled to the first interface; and
a first contactless communications transmitter unit (CCTU) coupled to the host delay circuitry and the host controller; and
a non-host device operative to communicate with the host device according to a wired interface protocol, the non-host device comprising:
a second interface for coupling to the first interface;
a device controller coupled to the second interface; and
second PSA circuitry coupled to the second interface and the device controller, the second PSA circuitry comprising:
device delay circuitry coupled to the second interface;
second CCTU coupled to the device delay circuitry and the device controller; and
first contactless communication receiver unit (CCRU) coupled to the device controller,
wherein in response to a coupling between the first and second interfaces, the host delay circuitry and device delay circuitry synchronize activation of at least one pin in respective first and second CCTUs to comply with timing sequence requirements of the wired interface protocol.

US Pat. No. 9,906,292

MULTIPLE ORDER CONNECTORS FOR CONTACTLESS COMMUNICATION DEVICES AND METHODS FOR USING THE SAME

KEYSSA SYSTEMS, INC., Ca...

1. A first device for use in establishing a contactless communications link with a second device, the first device comprising:
a first order connection constructed to physically interface with a counterpart first order connection of the second device;
and

a second order connection operative to move independent of the first order connection, the second order connection comprising:
a substrate;
at least one contactless communications unit (CCU) mounted on the substrate and that is operative to establish the contactless
communications link with a respective counterpart CCU of the second device; and

an actuator operative to move the substrate such that the at least one CCU is optimally aligned with its respective counterpart
CCU to establish the contactless communications link, wherein the first order connection is operative to perform coarse physical
alignment of the at least one CCU with the respective counterpart CCU and wherein the second order connection is operative
to perform fine physical alignment of the at least one CCU with the respective counterpart CCU.

US Pat. No. 10,063,365

RE-TIMER NETWORK INSERTION

Keyssa Systems, Inc., Ca...

12. An apparatus for inserting a synchronized signal between a transmitter and a receiver, the apparatus comprising:a re-timer configured to:
receive, from the transmitter, an input data signal including encoded words, wherein each encoded word of the encoded words has a word length of a predetermined number of bits;
generate, based on the input data signal, a regenerated clock signal and an output data signal; and
apply, based on a timing difference between the input data signal and the output data signal, a delay to the input data signal to generate a delayed output data signal, such that a timing difference between the input data signal and the delayed output data signal corresponds to N word lengths, wherein N is an integer equal to or greater than one; and
a phase comparator configured to:
determine, based on the regenerated clock signal, the timing difference between the input data signal and the output data signal of the re-timer.

US Pat. No. 9,912,468

MULTI-DATA RATES MULTI-PROTOCOL COMMUNICATIONS TECHNIQUES FOR REFERENCE-LESS RE-TIMER

Keyssa Systems, Inc., Ca...

14. An apparatus for generating a clock signal, the apparatus comprising:
frequency comparator circuitry configured to:
receive an input data signal transmitted without a reference clock signal; and
compare the input data signal with a re-timer clock signal to determine a frequency difference between the input data signal
and the re-timer clock signal;

a state machine configured to:
determine a data rate of the input data signal based on the frequency difference between the input data signal and the re-timer
clock signal; and

oscillator calibrator circuitry configured to:
generate, based on the data rate of the input data signal, a control signal for adjusting a frequency of the re-timer clock
signal to frequency-lock the re-timer clock signal with the input data signal.

US Pat. No. 10,097,341

TESTING OF CLOCK AND DATA RECOVERY CIRCUITS

Keyssa Systems, Inc., Ca...

1. A device, comprising:a clock data recovery (CDR) circuit having an input node, an output node, a data recovery circuit, and a self-test circuit, the CDR circuit supporting a first mode of operation and a second mode of operation,
wherein in the first mode, the CDR circuit receives an input data signal at the input node and provides the input data signal to an input of the data recovery circuit, the data recovery circuit recovers first data from the input data signal, and the CDR circuit provides the first data for output at the output node, and
wherein in the second mode, the self-test circuit generates a test data pattern which is provided to the output node and looped back to the input of the data recovery circuit, the data recovery circuit recovers second data from the test data pattern, and the self-test circuit checks the second data for errors.

US Pat. No. 9,900,197

BPSK DEMODULATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:
a super-regenerative amplifier (SRA) configured to receive a binary phase shift keying (BPSK) modulated signal and to output
an amplitude signal as a function of changes in phase in the BPSK modulated signal;

a pseudo synchronous demodulator that rectifies the amplitude signal and generates an envelope of the rectified amplitude
signal; and

an analog to digital converter that converts the amplitude values of the envelope to digital binary values.

US Pat. No. 9,888,516

REDUNDANT CONTACTLESS COMMUNICATION

Keyssa Systems, Inc., Ca...

1. A method comprising:
performing a loopback test on a first contactless connector and a second contactless connector of a first device, wherein
performing the loopback test comprises:

configuring the first contactless connector as a transmitter and the second contactless connector as a receiver,
sending a first signal pattern from the first contactless connector to the second contactless connector,
determining whether a first received signal pattern received by the second contactless connector matches the first signal
pattern,

in response to determining that the first received signal pattern matches the first signal pattern, configuring the first
contactless connector as a receiver and the second contactless connector as a transmitter,

sending a second signal pattern from the second contactless connector to the first contactless connector,
determining whether a second received signal pattern received by the first contactless connector matches the second signal
pattern,

in response to determining that the second received signal pattern matches the second signal pattern, configuring the first
contactless connector as a primary connector and the second contactless connector as a redundant connector; and

establishing a communication link between the first device and a second device using the primary connector.

US Pat. No. 9,998,567

CONTACTLESS COMMUNICATION INTERFACE SYSTEMS AND METHODS

KEYSSA SYSTEMS, INC., Ca...

1. A system comprising:a first set of contactless communication transceiver units (CCTUs) configured to contactlessly communicate data with a second set of CCTUs associated with a second system, wherein a data lane is formed for each coupled pair of CCTUs established between the first and second sets;
an operating system configured to communicate with the second system using at least one non-contactless interface protocol, wherein each of the at least one non-contactless interface protocol is characterized by a transport layer, a link layer, and a physical layer; and
a contactless communications interface (CCI) coupled to the first set of CCTUs and the operating system, the CCI enables the operating system to use any one of a plurality of non-contactless interface protocols to communicate with the second system via the first set of CCTUs by translating any one of the plurality of non-contactless interface protocols being used by the operating system to a contactless protocol.

US Pat. No. 10,250,418

EHF RECEIVER ARCHITECTURE WITH DYNAMICALLY ADJUSTABLE DISCRIMINATION THRESHOLD

Keyssa Systems, Inc., Ca...

1. A receiver device comprising:a detector circuit configured to receive an extremely high frequency (EHF) electromagnetic signal and generate a baseband signal and an initial reference signal; and
a voltage slicer circuit comprising:
a reference signal feedback loop configured to:
sample the initial reference signal to determine an initial reference signal setting value,
during a first time period, determine a difference between the initial reference signal setting value and a reference signal setting value, and
during a second time period, adjust the initial reference signal setting value when the determined difference is more than a reference signal threshold value;
a baseband signal feedback loop configured to: sample the baseband signal,
compute an average baseband signal using a plurality of samples of the baseband signal to determine an average baseband value,
determine a difference between the average baseband value and the initial reference signal setting value, and
compute an initial discrimination threshold voltage level value using the determined difference;
an amplifier configured to apply the initial discrimination threshold voltage level value to the baseband signal; and
an amplifier feedback loop comprising:
a switch having a first terminal coupled to a first input of the amplifier and a second terminal coupled to a second input of the amplifier; and the switch configured to receive a control signal from a controller to regulate the operation of the switch, the switch being turned on responsive to the control signal being in a first state and the switch being turned off responsive to the control signal being in a second state.

US Pat. No. 10,454,526

STRUCTURES FOR CROSS-TALK REDUCTION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a communications module comprising two or more integrated circuit packages each integrated circuit package including at least one transmitter, receiver, or transceiver; and
a device housing portion for an electronic device, wherein the housing portion comprises a planar portion substantially parallel to a communications module of the device, the planar portion of the housing comprising:
a first region formed from a first material and configured to be in a transmission path of a first electromagnetic signal, associated with a first integrated circuit package, when transmitted to or from the device;
a second region formed from the first material and configured to be in the transmission path of a second electromagnetic signal, associated with a second integrated circuit package, when transmitted to or from the device; and
a third region defined in the housing between the first region and the second region, the third region comprising an arrangement of structures formed from the first material and a second material, wherein the arrangement of structures includes a plurality of units formed from the second material interleaved with a plurality of units formed from the first material, and wherein the arrangement of structures positioned between the first region and the second region reduce propagation of electromagnetic radiation propagating from the first integrated circuit package to the second integrated circuit package through the housing, wherein the arrangement of structures is oriented such that a direction of the interleaving of the structures is perpendicular to the transmission path of the first and second electromagnetic signals.

US Pat. No. 10,256,520

SIDE LAUNCH CONTACTLESS SIGNAL CONDUIT STRUCTURES

KEYSSA SYSTEMS, INC., Ca...

1. An air-filled dielectric conduit structure for use with a contactless communications unit (CCU) mounted to a substrate, wherein the CCU is operative to selectively transmit and receive RF signals along a first path, the conduit structure comprising:a dielectric structure comprising an RF interface region, an external tapered region, an internal tapered region, and an air-filled cavity,
wherein the CCU is capped by the air-filled cavity, and
wherein a combination of the air-filled cavity and internal and external tapered regions redirects RF signals transmitted by the CCU along the first path to the RF interface region via a second path and redirects RF signals received via the RF interface region along the second path to the CCU via the first path.

US Pat. No. 10,374,320

ELECTROMAGNETIC SIGNAL FOCUSING STRUCTURES

KEYSSA SYSTEMS, INC., Ca...

8. A module for controlling contactless communications with a counterpart communications unit, the module comprising:contactless communications circuitry comprising silicon die and an insulation layer encompassing the silicon die, the circuitry comprising a first surface;
an antenna that is electrically coupled to the contactless communications circuitry; and
an EM focusing structure secured to the first surface, the EM focusing structure comprising a plurality of EHF focusing layers that collectively form a cavity backed reflective lens, wherein the silicon die serves as a nominal reflective ground plane for the EM focusing structure, and wherein each of the EHF focusing layers is characterized by a different cross-sectional area such that the EHF focusing layers collectively define a beam shaping geometry of the cavity backed reflective lens.

US Pat. No. 10,468,919

CHARGING PORTS WITH INTEGRATED CONTACTLESS COMMUNICATION UNITS

KEYSSA SYSTEMS, INC., Ca...

1. An electric vehicle supply equipment (EVSE) for use with a vehicle comprising:communications circuitry;
data storage;
control circuitry; and
a first port connector operative to interface with a second port connector associated with the vehicle, the first connector comprising:
a housing having a keyed outer surface that limits the interface between the first port connector and the second port connector to one orientation;
one or more connectors operative to mechanically couple to one or more counterpart connectors in the second port connector; and
at least one contactless communication unit (CCU) that establishes a contactless communications link with a respective one of the at least one CCU of the second port connector when the first and second port connectors are coupled together, and wherein the interface orientation between the first and second port connectors ensures that the at least one CCU associated with the first port connector and the respective one of the at least one CCU associated with the second port connector are aligned with respect to each other to enable establishment of the contactless communications link when the first and second port connectors are coupled together; and
wherein after the first and second port connectors are coupled together, the control circuitry is operative to receive vehicle log data from the vehicle via the contactless communications link after the EVSE has been authenticated to the vehicle.

US Pat. No. 10,375,221

ADAPTER DEVICES FOR ENHANCING THE FUNCTIONALITY OF OTHER DEVICES

KEYSSA SYSTEMS, INC., Ca...

1. An apparatus comprising:a housing configured to attach to a first device in an attached state;
a first communication unit (CU) configured to establish a first communications link by exchanging extremely high frequency (EHF) electromagnetic signals with a second CU of the first device when in the attached state;
a connector configured to establish a second communications link by exchanging electrical signals with a second device; and
a controller configured to utilize a first application programming interface (API) to communicate with the first device according to a first communications protocol.

US Pat. No. 10,483,614

EHF HINGE ASSEMBLIES

KEYSSA SYSTEMS, INC., Ca...

1. A hinge assembly for use in propagating radio frequency signals, the hinge assembly comprising:a first subassembly comprising a first waveguide, wherein the first waveguide comprises a first self-sustaining signal propagation portion and a first co-dependent signal propagation portion;
a second subassembly that interfaces with the first subassembly and moves at an angular rotation with respect to the first subassembly, the second subassembly comprising a second waveguide, wherein the second waveguide comprises a second self-sustaining signal propagation portion and a second co-dependent signal propagation portion;
wherein, in a first range of angular rotation, the first and second co-dependent signal propagation portions are in direct contact with each other to form a propagation coupling between the first and second waveguides that enables the radio frequency signals to propagate through the hinge assembly; and
wherein, in a second range of angular rotation, the first and second co-dependent signal propagation portions are not in direct contact with each other and the radio frequency signals are not able to propagate through the hinge assembly.

US Pat. No. 10,405,316

CONTACTLESS CONNECTOR LOCATION SYSTEMS AND METHODS

KEYSSA SYSTEMS, INC., Ca...

1. A base device operative to contactlessly communicate with a user device, the base device comprising:a housing characterized as having a major surface and a minor surface, wherein the minor surface is substantially perpendicular to the major surface;
at least one obfuscated contactless communication transceiver unit (OCCTU) disposed along one of the major surface and the minor surface, the at least one OCCTU operative to:
emit a beaconing signal that alerts presence of a RF field to the user device and that includes identifying information specifying whether the base device has its at least one OCCTU disposed along its major surface or minor surface such that when the user device receives the beaconing signal, the user device provides alignment instructions for the user to position the user device with respect to the base device such that at least one CCTU associated with the user device is optimally aligned with the at least one OCCTU disposed along the major surface or the minor surface of the base device; and
establish a contactless link with a contactless communication unit (CCU) associated with the user device when the user device is positioned in a connection alignment position with respect to the base device, wherein the CCTU and the OCCTU contactlessly communicate with each other in an approximate 60 GHz frequency domain; and
an I/O component that provides alignment instructions that guide a user to position the user device with respect to the base device.

US Pat. No. 10,389,454

CROSS-TALK BLOCKING STRUCTURES FOR EM COMMUNICATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a communication module comprising:
a transmitter integrated circuit package;
a receiver integrated circuit package; and
a printed circuit board, wherein the transmitter integrated circuit package and the receiver integrated circuit package are positioned on the printed circuit board;
a signal blocking structure positioned between the transmitter integrated circuit package and the receiver integrated circuit package, wherein the signal blocking structure is positioned on the printed circuit board; and
a discrete structure formed of a dielectric material and positioned between the transmitter integrated circuit package and the receiver integrated circuit package, wherein a first end of the discrete structure is in contact with a surface of the signal blocking structure and a second end is in contact with an absorbing material formed as part of a housing configured to enclose the communication module.

US Pat. No. 10,403,586

SIGNAL ISOLATION STRUCTURES FOR EM COMMUNICATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:an integrated-circuit (IC) package including a transducer coupled to at least one of a transmitter, a receiver, or a transceiver, the IC package mounted to a printed circuit board (PCB); and
a metallic blocking structure configured to partially enshroud the IC package, the metallic blocking structure having at least a first portion that covers a portion of the IC package and is oriented substantially parallel to the printed circuit board and one or more second portions substantially perpendicular to the printed circuit board and extending from the printed circuit board to the first portion, wherein the first portion is positioned to provide an opening disposed over and that exposes the transducer, such that an electromagnetic signal perpendicular to a surface of the IC package passes through the opening provided by the first portion of the metallic blocking structure.

US Pat. No. 10,551,420

SYSTEM AND METHOD FOR RF AND JITTER TESTING USING A REFERENCE DEVICE

Keyssa Systems, Inc., Ca...

1. A tester comprising:a test site configured to:
hold a reference device,
hold a device under test (DUT) with respect to the reference device,
transmit, via the reference device, a transmitted electromagnetic radio frequency (RF) signal to the DUT, the transmitted electromagnetic RF signal including a test data pattern, and
receive, via the reference device, a received electromagnetic RF signal emitted from the DUT; and
one or more test circuits operatively coupled to the test site and configured to:
receive, from a receiver of the reference device, a first electrical signal converted from the received electromagnetic RF signal,
extract first data from the first electrical signal,
determine a first error rate between the test data pattern and the first data, and
generate a test result on the basis of the first error rate.

US Pat. No. 10,225,120

BPSK DEMODULATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a first super-regenerative amplifier (SRA) and a second SRA, each configured to receive a phase shift keying (PSK) modulated signal and output an amplitude signal indicative of changes in phase of the PSK modulated signal;
a first pseudo synchronous demodulator configured to process an output of the first SRA to generate a first demodulated signal;
a second pseudo synchronous demodulator configured to process an output of the second SRA to generate a second demodulated signal;
a first analog to digital converter (ADC) configured to convert values of the first demodulated signal to digital binary values; and
a second ADC configured to convert values of the second demodulated signal to digital binary values,
wherein the outputs of the first and second ADCs are selectively combined to generate an interleaved output.

US Pat. No. 10,225,066

MULTI-PROTOCOL CONTACTLESS COMMUNICATION

Keyssa Systems, Inc., Ca...

1. A method comprising:determining, at a first device, that a second device is positioned within proximity of the first device;
initiating a half duplex communication with the second device using a first transceiver of the first device wherein initiating half duplex communication includes incorporating signals in outgoing transmissions indicating that the receiver of the second device is clear to switch to a transmission mode;
configuring communication with the second device including determining whether full duplex communication is available on the second device;
in response to a determination that full duplex communication is not available, communicating with the second device in half duplex mode using the first transceiver; and
in response to a determination that full duplex communication is available, communicating with the second device in full duplex mode using the first transceiver and one or more receivers or additional transceivers.

US Pat. No. 10,635,149

POWER SEQUENCING CIRCUITRY AND METHODS FOR SYSTEMS USING CONTACTLESS COMMUNICATION UNITS

KEYSSA SYSTEMS, INC., Ca...

1. An independently powered automatic contactless communications non-host device that communicates with a host device according to a wired interface protocol, comprising:a power source;
a device controller coupled to the power source;
a first contactless communications transmitter unit (CCTU) coupled to the device controller,
a first contactless communications receiver unit (CCRU) coupled to the device controller, wherein in response to a detected presence of the host device, the first CCTU and first CCRU operate according to respective state machines that timely control activation of a termination associated with the first CCTU and assertion of a Vbus_enable of the device controller in order to comply with timing sequence requirements of the wired interface protocol; and
power up complete detection circuitry that determines when the device controller has completed its power up sequence, wherein the power up complete detection circuitry is coupled to the first CCTU, wherein the power up complete detection circuitry instructs the CCTU to initiate beaconing to locate the host device upon determining that that device controller has completed its power up sequence.

US Pat. No. 10,651,892

STRUCTURES FOR CROSS-TALK REDUCTION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a communications module comprising two or more integrated circuit packages each integrated circuit package including at least one transmitter, receiver, or transceiver; and
a device housing portion for an electronic device, wherein the housing portion comprises a planar portion substantially parallel to a communications module of the device, the planar portion of the housing comprising:
a first region formed from a first material and configured to be in a transmission path of a first electromagnetic signal, associated with a first integrated circuit package, when transmitted to or from the device;
a second region formed from the first material and configured to be in the transmission path of a second electromagnetic signal, associated with a second integrated circuit package, when transmitted to or from the device; and
a third region comprising an arrangement of structures formed from a plurality of segments of the first material and a plurality of segments of a second material, wherein the first material has a first dielectric constant that allows propagation of electromagnetic signals and the second material has a second dielectric constant, wherein the arrangement of the first material and the second material provides a bandpass filter of electromagnetic signals.

US Pat. No. 10,673,780

COMPUTING DEVICES USING EXTREMELY HIGH FREQUENCY (EHF) ELECTROMAGNETIC COMMUNICATION

Keyssa Systems, Inc., Ca...

12. A system, comprising:a rack frame including a first bay and a second bay;
a first rack mountable device in the first bay, comprising:
a first rack mountable chassis including a first side;
a first extremely high frequency (EHF) communication device disposed along the first side, the first EHF communication device configured to emit or receive a first EHF electromagnetic signal;
a second EHF communication device disposed along the first side of the first rack mountable chassis, the second EHF communication device configured to emit or receive a second EHF electromagnetic signal;
a first radiation absorbing shield surrounding the first EHF communication device and not surrounding the second EHF communication device to shield the first EHF communication device from the second EHF electromagnetic signal; and
a second radiation absorbing shield surrounding the second EHF communication device and not surrounding the first EHF communication device to shield the second EHF communication device from the first EHF electromagnetic signal; and
a second rack mountable device in the second bay, comprising:
a second rack mountable chassis including a second side facing the first side of the first rack mountable chassis; and
a third EHF communication device disposed along the second side of the second rack mountable chassis,
wherein the first EHF communication device is configured to form an EHF electromagnetic communication channel with the third EHF communication device to transfer data between the first rack mountable device and the third rack mountable device.

US Pat. No. 10,772,192

BOARD-TO-BOARD CONTACTLESS CONNECTORS AND METHODS FOR THE ASSEMBLY THEREOF

KEYSSA SYSTEMS, INC., Ca...

1. A device comprising:a first circuit board comprising a first contactless communications unit (CCU) mounted to a first surface of the first circuit board;
a second circuit board comprising a second CCU mounted to a second surface of the second circuit board, wherein the second circuit board is positioned below the first circuit board such that the first and second surfaces face each other and that a contactless board-to-board connection is established via the first and second CCUs, wherein each of the first and second CCUs comprises:
a printed circuit board;
a silicon die having a first side and a second side, wherein the first side is mounted to the printed circuit board;
a dielectric layer disposed on the second side of the silicon die;
a transducer disposed on the dielectric layer directly above the second side of the silicon die;
a ground plane adjustment layer disposed on or within the dielectric layer, wherein the ground plane adjustment layer defines an effective ground plane for the transducer, and wherein the silicon die is an actual ground plane for the transducer and wherein the effective ground plane is different than the actual ground plane; and
a collimating structure operative as a lens; and
a conduit structure mounted to the first and second circuit boards, wherein the conduit structure comprises a EHF channel for directing contactless signals being communicated between the first and second CCUs.

US Pat. No. 10,742,462

BPSK DEMODULATION

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a super-regenerative amplifier (SRA) configured to receive a binary phase shift keying (BPSK) modulated signal and to output an amplitude signal as a function of changes in phase of the BPSK modulated signal;
a synchronous demodulator configured to demodulate the amplitude signal, wherein demodulating the amplitude signal includes generating a bipolar envelope amplitude signal; and
an analog to digital converter that converts amplitude values of the bipolar envelope amplitude signal to digital binary values.

US Pat. No. 10,764,421

ADAPTER DEVICES FOR ENHANCING THE FUNCTIONALITY OF OTHER DEVICES

KEYSSA SYSTEMS, INC., Ca...

1. A camera comprising:an integrated adapter comprising:
an electro-mechanical connector for establishing an electrical-mechanical connection with a first device; and
a first communication unit (CU) configured to establish a first communications link by exchanging extremely high frequency (EHF) electromagnetic signals with a second CU of a second device when the second device is attached to the camera;
a controller operative to:
exchange electrical signals with the first device when the first device is connected to the electro-mechanical connector; and
communicate with the second device according to a first communications protocol when the second device is attached to the camera and the first communication link is established.

US Pat. No. 10,785,015

MULTIPLE PHASE SYMBOL SYNCHRONIZATION FOR AMPLIFIER SAMPLER ACCEPTING MODULATED SIGNAL

Keyssa Systems, Inc., Ca...

1. An apparatus comprising:a plurality of receive samplers arranged in parallel and configured to receive an amplitude modulated input signal, each receive sampler being clocked at a same rate but not a same phase, the rate being in relation with the amplitude modulated input signal;
a plurality of envelope extractors, wherein each envelop extractor is communicatively coupled to a respective output of one of the plurality of receive samplers, and wherein each envelope extractor is configured to extract an envelope of the amplitude modulated input signal after sampling; and
a combiner communicatively coupled to the plurality of envelope extractors to combine signal envelopes sampled at their respective phases, creating a combined output that provides an approximate copy of the envelope of the amplitude modulated input signal, providing an output signal for performing symbol synchronization.

US Pat. No. 10,771,593

CONTACTLESS COMMUNICATION INTERFACE SYSTEMS AND METHODS

KEYSSA SYSTEMS, INC., Ca...

1. A method comprising:determining characteristics of a first system, the first system characteristics including a first number of contactless communication units (CCUs) each capable of communicating extremely high frequency (EHF) electromagnetic (EM) signals over a respective contactless communication lane;
determining characteristics of a second system, the second system characteristics including a second number of CCUs each capable of communicating EHF EM signals over a respective contactless communication lane, wherein each contactless communication lane exists between a respective CCU in the first system and a respective CCU in the second system, and wherein a plurality of contactless communication lanes exist between the first and second systems;
identifying a first communications interface defining use of the plurality of contactless communication lanes based on the determined first and second system characteristics;
configuring each of the plurality of contactless communication lanes in accordance with the identified first communications interface; and
dynamically managing use of the plurality of communication lanes based on at least one of user preferences, quality of service assurances, total and available bandwidth, downstream bandwidth requirements, upstream bandwidth requirements, lane status, and lane turn-around time.