US Pat. No. 9,521,377

MOTION DETECTION METHOD AND DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A motion detection method, comprising:
recording an input video having a plurality of image frames, with each image frame having a plurality of windows of interest
(WOIs);

extracting a reference frame from the input video in every reference updating cycle;
extracting a target frame from the input video and determining whether an event occurs in each of the WOIs by comparing the
target frame with the reference frame in every checking cycle; and

comparing the number of WOIs in which the event occurs in every observation cycle with a threshold to determine whether the
input video contains a motion during the observation cycle;

wherein the observation cycle is greater than the checking cycle, and the checking cycle is greater than or equal to the reference
updating cycle.

US Pat. No. 9,269,241

TAMPER-RESISTANT SECURITY DEVICE

SERCOMM CORPORATION, Tai...

1. A security device, comprising:
a mounting plate, for being fixed to a surface, comprising a first electrical contact point and a second electrical contact
point electrically connecting to the first electrical contact point; and

a mounting device to be assembled to the mounting plate, comprising:
a third electrical contact point for contacting the first electrical contact point when the mounting device is assembled to
the mounting plate; and

a fourth electrical contact point for contacting the second electrical contact point when the mounting device is assembled
to the mounting plate; and

a detection circuit electrically connected to the fourth electrical contact point, for determining whether the fourth electrical
contact point is electrically connected to the third electrical contact point.

US Pat. No. 9,083,866

NETWORK CAMERA

SERCOMM CORPORATION, Tap...

1. A network camera, comprising:
a base having a screw hole, wherein the screw hole is a blind hole;
a casing having a through hole;
a fasten element passing through the through hole from inside the casing and fastened within the screw hole, so as to assemble
the base to the casing;

an image capture element; and
a printed circuit board (PCB) disposed within the casing for controlling the image capture element.

US Pat. No. 9,497,425

MOTION DETECTION METHOD AND DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A motion detection method, comprising:
recording an input video;
extracting a reference frame from the input video in every reference updating cycle;
extracting a target frame from the input video in every checking cycle;
for each target frame in an observation cycle, calculating a pixel differential value in a window of interest (WOI) of the
input video between the target frame and the reference frame, and determining an event occurs when the pixel differential
value exceeds an event threshold value, wherein one observation cycle comprises more than one target frames; and

comparing the number of events accumulated in every observation cycle with a threshold to determine whether the input video
contains a motion during the observation cycle.

US Pat. No. 9,478,960

MOUNTING PLATE AND SECURITY DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A mounting plate, for being fixed to a surface, comprising:
a first conductive sheet and a second conductive sheet electrically connected to a first electrode and a second electrode
of an exterior power respectively;

wherein when a mounting device is hanged up on the mounting plate, the exterior power is electrically connected to the mounting
device through the first conductive sheet and the second conductive sheet;

wherein the mounting plate further comprises:
a plate body; and
a plurality of hook pairs disposed on a rear surface of the plate body and hooked with two opposite sides of the first conductive
sheet and the second conductive sheet;

wherein the first conductive sheet has a through hole, and the plate body comprises:
a fixing pillar comprising:
a pillar body passing through the through hole of the first conductive sheet;
a pressing head connecting to the pillar body and pressing against the first conductive sheet; and
an island projected from the surface of the plate body; and
a plurality of through holes passing through the island and the plate body, such that the first conductive sheet and the second
conductive sheet may pass through the through holes from the rear surface of the plate body and be exposed from the island.

US Pat. No. 9,154,379

REMOTE CONFIGURATION OF A HARDWARE DEVICE MODULE OF A SECURITY SYSTEM

SERCOMM CORPORATION, Tai...

1. A security system comprising:
a plurality of hardware device modules, at least one of which having a microcontroller coupled to a memory element that stores
a configuration map for remote configuration encoded with configuration option information available for the at least one
hardware device module;

a plurality of security sensor detection devices, wherein each of the plurality of security sensor devices is configured to
monitor a premises and is capable of sending a status signal to one or more of the hardware device modules based on a change
in status of the area being monitored; and

a remote programming tool that includes a configuration engine, wherein the remote programming tool is indirectly coupled
to the at least one hardware device module and is configured to receive the configuration map from the at least one hardware
device module, and generate a dynamic user interface to configure the at least one hardware device module based on the received
configuration map from one of the hardware device modules using the configuration engine of the remote programming tool, and;

wherein the plurality of hardware device modules includes a main controller module configured to receive the status signal
from one of the plurality of security sensor detection devices and send an instruction signal to one of the plurality of hardware
device modules based on the status signal and the dynamic user interface is specifically tailored to the one of the hardware
device modules and also tailored with programming options available for programming the hardware device module, the remote
programming tool further includes a display that displays the dynamic user interface and a user input device that is capable
of configuring options provided in the dynamic user interface; a user is allowed to configure the hardware device module using
the user input device on the remote programming tool to navigate through menus created in the remote programming tool; wherein
the dynamic user interface is sent to the display; the configuration map includes a plurality of fields for configuration
option information, each field is represented by an ASCII character used by the configuration engine to identify the particular
field thereof, the fields in the configuration map includes a combination of: a menu identification, a menu index identification,
an input data type, an input data size, a multiple entry index, a grouping index, a minimum user input value, a maximum user
input value, an input validator selector, a value used to disable a feature, a user access index and a text prompt, wherein
the configuration map is pre-installed in the hardware device module itself or the configuration map is updated by a vendor
of the hardware device module of the pre-installed configuration map therein.

US Pat. No. 9,307,124

WALL STAND

SERCOMM CORPORATION, Tap...

1. A wall stand, comprising:
a stand body including:
a base having an opening;
a pressing component comprising a pressing portion disposed corresponding to the opening; and
at least one fixing component disposed on the base; and
a bottom plate configured for being mounted on a wall, the bottom plate including:
an elastic component disposed corresponding to the pressing component for being engaged with the pressing component and disengaged
from the pressing component by a force from the pressing component; and

at least one supporting portion configured for correspondingly supporting the at least one fixing component.

US Pat. No. 9,282,225

STAND FOR IP CAMERA AND IP CAMERA HAVING THE SAME, AND USING METHOD THEREOF

SERCOMM CORPORATION, Tap...

1. A stand for an IP camera, comprising:
a base;
a shaft;
a supporting component standing on the base and configured to hold the IP camera, the supporting component including two end
portions and a long portion located between the two end portions, the shaft connecting the supporting component and the IP
camera, the hole being disposed between the hinge and the base, the supporting component having a hole penetrating through
two opposite elongated surfaces of the long portion; and

a cable organizer, wherein the cable organizer is configured for being inserted into the hole of the long portion such that
the cable organizer crosses the long portion, the cable organizer has a first surface, a second surface and a side surface,
the second surface is opposite to the first surface, the side surface connects the first surface with the second surface,
the cable organizer comprises at least one through hole portion, the through hole portion has a slit that allows a cable to
be received through and organized in the through hole portion by passing through the slit, the hole has a first end and a
second end corresponding to the first surface and the second surface, respectively, an area of the second end is larger than
an area of the first end, the cable organizer includes a board portion and a body portion connected to the board portion,
a cross-sectional area of one end of the body portion is larger than a cross-sectional area of anther end of the body portion,
and the supporting component is a pillar.

US Pat. No. 9,210,798

WIRELESS MODULE

SERCOMM CORPORATION, Tai...

1. A wireless module, comprising:
a circuit board module;
a universal serial bus (USB) connector connected to the circuit board module; and
a wave absorbing film disposed on the circuit board module and extended to overlap at least a part of the USB connector, wherein
a wave-absorbing cavity is formed between the wave absorbing film and the USB connector.

US Pat. No. 9,455,490

COMMUNICATION DEVICE INTEGRALLY FORMED WITH ANTENNA AND MASK

SERCOMM CORPORATION, Tai...

1. A communication device, comprising:
a circuit board;
a frame disposed on an upper surface of the circuit board and having a plurality of sidewalls perpendicular to the upper surface
and surrounding an opening;

a communication chip disposed on the upper surface and located in the opening; and
a mask disposed on the circuit board, the mask comprises:
a cover covering the communication chip;
a plurality of plates projected from a lower edge of the cover, parallel to the sidewalls and having a hollowed area;
an antenna module connected to the hollowed area and integrally formed with the plates;
wherein the sidewalls of the frame cover the hollowed area; and
wherein the antenna module comprises an antenna, and the antenna is bent around a bend line between the cover and one of the
plates, and the antenna projects from an upper surface of the cover.

US Pat. No. 9,602,470

NETWORK DEVICE, IPSEC SYSTEM AND METHOD FOR ESTABLISHING IPSEC TUNNEL USING THE SAME

SERCOMM CORPORATION, Tai...

1. A network device for connecting a plurality of slave network devices, each of the slave network devices communicating with
the network device by using a different Internet protocol (IP) address, the network device comprising:
an Internet protocol security (IPsec) module for establishing an IPsec tunnel to a network gateway in the Internet and retrieving
an IPsec IP address corresponding to the IPsec tunnel; and

a network address translation (NAT) module for converting the different IP addresses of the slave network devices to the same
IPsec IP address, such that the slave network devices share the IPsec tunnel and use the same IPsec IP address to communicate
with the network gateway through the IPsec tunnel;

wherein at least one of the IPsec module and the NAT module is implemented by a processor;
wherein the IPsec tunnel ends at the network device and the network gateway without extending to any of the slave network
devices.

US Pat. No. 9,571,333

NETWORK DEVICE AND METHOD FOR MAINTAINING NETWORK CONNECTION

SERCOMM CORPORATION, Tai...

1. A method for maintaining network connection of a network device, the method comprising steps of:
(a) determining whether a connection status between the network device and a remote device is disconnected, wherein an application
layer is automatically restarted if the connection status is disconnected;

(b) automatically restarting a network protocol layer if the connection status is still disconnected after the application
layer is automatically restarted; and

(c) automatically rebooting the network device if the connection status is still disconnected after the network protocol layer
is automatically restarted.

US Pat. No. 9,560,535

DATA STREAM GENERATION AND TRANSMISSION SYSTEM AND METHOD THEREFOR

SERCOMM CORPORATION, Tai...

1. A data stream generation and transmission system, comprising:
a cable;
a digital video camera, comprising:
a storage component, for storing wireless network configuration data; and
a video encoder, for generating a data stream; and
a wireless transmission device connected to the digital video camera through the cable, comprising:
a wireless module;
wherein the digital video camera is adapted to send the wireless network configuration data and the data stream to the wireless
transmission device through the cable, and the wireless transmission device is adapted to use the wireless network configuration
data to configure the wireless module and use the wireless module to transmit the data stream wirelessly;

wherein the wireless network configuration data comprises a wireless module driver and at least one of a Service Set Identifier
(SSID), an indication of infra-structure/ad-hoc mode and WEP/WPA/WPA2 security information, the digital video camera dynamically
detects the existence of the wireless transmission device, and when the digital video camera detects that the wireless transmission
device exists, the digital video camera loads the wireless module driver to the wireless transmission device, and sends the
at least one of the SSID, the indication of infra-structure/ad-hoc mode and the WEP/WPA/WPA2 security information to the wireless
transmission device.

US Pat. No. 9,559,791

WIRELESS COMMUNICATION DEVICE FOR TRANSCEIVING HETEROGENEOUS RADIO-FREQUENCY SIGNALS

SERCOMM CORPORATION, Tai...

1. A wireless communication device, comprising:
a first antenna, for transceiving a first radio-frequency (RF) signal according to a first wireless communication standard;
a first transceiver, connected to the first antenna through a first transceiving path;
a second antenna, for transceiving a second RF signal according to a second wireless communication standard; and
a second transceiver, connected to the second antenna through a second transceiving path, wherein the second transceiving
path comprises:

a reception path, electrically connected to the second transceiver and the second antenna, comprising:
a first RF switch;
a second RF switch, electrically connected to the first RF switch; and
an attenuator, electrically connected to the first RF switch and the second RF switch,
wherein the wireless communication device reduces sensitivity for receiving the second RF signal in a joining process when
establishing a connection to an end device according to the second wireless communication standard, wherein,

in the joining process, the first RF switch conducts to the second RF switch through the attenuator; and
in a period other than the joining process, the first RF switch conducts to the second RF switch directly.

US Pat. No. 10,165,672

SHIELDING CLIP AND ELECTRONIC DEVICE

Sercomm Corporation, Tai...

1. A shielding clip, adapted for fixing a shielding cover on a circuit board, the shielding clip comprising:a bottom plate, parallel to an XY plane and having a first side region and a second side region;
wherein:
the first side region has a first pin extending toward a ?Z direction and a first buckle plate extending toward a +Z direction; and
the second side region has a second pin extending toward the ?Z direction and a second buckle plate extending toward the +Z direction,
wherein:
the first side region has a first lateral side from which the first buckle plate extends toward the +Z direction and a second lateral side that is a free side, and the first and second lateral side are two opposite side of the first side region; and
the second side region has a third lateral side from which the second buckle plate extends toward the +Z direction and the fourth lateral side that is a free side, and the third and fourth lateral side are two opposite side of the second side region.

US Pat. No. 9,633,530

DOORBELL DEVICE

SERCOMM CORPORATION, Tai...

1. A doorbell device, comprising:
a user interface, comprising a button;
a control circuit, coupled to the user interface, for generating a power control signal according to a state of the button;
a power switching circuit, coupled to the control circuit, for outputting a first voltage signal at a first node to supply
power to the control circuit according to the power control signal;

a first capacitor, coupled to the first node;
a second capacitor; and
a charge/discharge control circuit, coupled between the first node and the second capacitor, for controlling whether the second
capacitor is charged or discharged according to the first voltage signal.

US Pat. No. 9,786,134

DOORBELL SYSTEM AND DOORBELL CONTROL DEVICE

SERCOMM CORPORATION, Tai...

1. A doorbell system, comprising:
a doorbell control device, having a first pin, a second pin, and a third pin, wherein the doorbell control device comprises:
a speaker unit; and
a control unit, configured to control whether or not the speaker unit produces sound according to a current or a voltage of
the second pin;

wherein the first pin is coupled to the second pin;
a transformer, outputting an AC voltage to the first pin and the third pin of the doorbell control device; and
a doorbell interface device, coupled to the second pin and the third pin of the doorbell control device;
wherein the doorbell control device further comprises:
a rectifier, coupled to the first pin and the third pin, configured to generate a first DC voltage; and
a DC voltage conversion circuit, configured to convert the first DC voltage to a second DC voltage, wherein the control unit
and the speaker unit are powered by the second DC voltage.

US Pat. No. 9,538,094

IP CAMERA WITH IR CUT BURNOUT AND DISLOCATION AVOIDANCE MECHANISM

SERCOMM CORPORATION, Tai...

1. An IP camera, comprising:
a camera lens;
an imaging unit;
an IR cut filter;
a motor, controlling the position of the IR cut filter; and
a control circuit, outputting a first pulse signal to drive the motor to move the IR cut filter such that light that passes
through the camera lens reaches the imaging unit without passing through the IR cut filter, and outputting a second pulse
signal to drive the motor to move the IR cut filter to the front side of the imaging unit;

wherein the first pulse signal has one or more pulses, and the second pulse signal has one or more pulses;
wherein the control circuit comprises:
a processing unit, generating an enabling signal and a control signal;
a control logic, coupled to the processing unit, wherein the control logic generates a plurality of control output signals
according to the enabling signal and the control signal; and

an output stage, coupled to the control logic, wherein the output stage generates the first pulse signal at a first output
terminal or generates the second pulse signal at a second output terminal according to the control output signals, wherein
the first output terminal and the second output terminal are coupled to the motor.

US Pat. No. 9,859,615

DUAL-BAND ANTENNA

Sercomm Corporation, Tai...

1. A dual-band antenna, comprising:
a ground element;
a short-circuit element, having a first end connected to the ground element;
a feed element, having a first end comprising a feed point; and
a radiator, comprising:
a first connection segment, wherein second ends of the short-circuit element and the feed element are connected to the first
connection segment, and the short-circuit element and the feed element are disposed at two opposite sides of the first connection
segment along an extending direction of a symmetric axis of the first connection segment;

a first radiation element;
a second radiation element, symmetrical to the first radiation element relative to the symmetric axis of the first connection
segment, wherein first ends of the first radiation element and the second radiation element are connected to the first connection
segment, and second ends of the first radiation element and the second radiation element are open ends;

a third radiation element; and
a fourth radiation element, symmetrical to the third radiation element relative to the symmetric axis, wherein first ends
of the third radiation element and the fourth radiation element are connected to the first connection segment, second ends
of the third radiation element and the fourth radiation element are open ends, and the second ends of the third radiation
element and the fourth radiation element are respectively opposite to the second ends of the first radiation element and the
second radiation element.

US Pat. No. 9,531,056

PATCH ANTENNA AND WIRELESS COMMUNICATION DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A patch antenna, comprising:
an irradiation plate having a long edge;
a grounding point located at the long edge; and
a feeding point located at the long edge;
wherein the grounding point and the feeding point are symmetrical with respect to a center of the long edge.

US Pat. No. 9,826,260

VIDEO ENCODING DEVICE AND VIDEO ENCODING METHOD

SERCOMM CORPORATION, Tai...

1. A video encoding device, comprising:
at least one processor containing a plurality of units, including:
an encoding unit, configured to generate an encoded video with an encoding frame rate;
a transmission unit, configured to provide a video stream to a client terminal via network according to the encoded video;
and

a calculating unit, configured to calculate an encoding rate in a first detection period according to the encoded video, and
calculate a transmission rate in a second detection period according to the video stream;

wherein the plurality of units are operated under the control of the at least one processor,
wherein the encoding unit is configured to adjust the encoding frame rate according to the encoding rate and the transmission
rate;

wherein the encoding unit is configured to decrease the encoding frame rate by multiplication when the transmission rate is
less than the encoding rate, and the encoding unit is configured to increase the encoding frame rate by addition when the
transmission rate is greater than or equal to the encoding rate,

wherein when the transmission rate is greater than or equal to the encoding rate, the encoding frame rate is incremented gradually
by a step value, and the step value is less than or equal to the difference between a target frame rate and the encoding frame
rate.

US Pat. No. 9,788,214

METHOD FOR MEASUREMENT CONTROL AND BASE STATION USING THE SAME

SERCOMM CORPORATION, Tai...

1. A method for measurement control, used in a base station, the method comprising:
dividing a coverage range of the base station into a plurality of coverage areas according to a signal coverage state, each
of the plurality of coverage areas having at least one signal state threshold value;

receiving a signal state report from a user equipment to determine a current coverage area where the user equipment is located,
wherein the current coverage area is one of the plurality of coverage areas; and

sending a measurement configuration to the user equipment according to the current coverage area;
wherein the plurality of coverage areas comprise a core area, the core area is a coverage area with the best signal state
among the plurality of coverage areas.

US Pat. No. 9,761,092

DOORBELL SYSTEM AND DOORBELL CONTROL DEVICE

SERCOMM CORPORATION, Tai...

1. A doorbell system, comprising:
a doorbell control device, having a first pin, a second pin, a third pin, and a fourth pin, wherein the doorbell control device
is configured to control a conducting state between the first pin and the third pin according to a current or a voltage of
the second pin, and the first pin is coupled to the second pin;

a transformer, outputting an AC voltage to the first pin and the fourth pin of the doorbell control device;
a doorbell interface device, coupled to the second pin and the fourth pin of the doorbell control device; and
a chime device, coupled to the third pin and the fourth pin of the doorbell control device;
wherein the doorbell control device comprises:
a voltage conversion circuit, coupled to the first pin and the fourth pin, configured to generate a second DC voltage;
a switch unit, configured to switch the conducting state between the first pin and the third pin; and
a control unit, powered by the second DC voltage, configured to control the switch unit according to the current or the voltage
of the second pin.

US Pat. No. 9,882,254

MICROSTRIP LINE FILTER

SERCOMM CORPORATION, Tai...

1. A microstrip line filter, comprising:
a dielectric substrate;
a first hairpin resonator disposed on a first layer of the dielectric substrate, wherein the first hairpin resonator comprises
a first metal strip, a second metal strip, and a U-shaped metal strip; and

a metal ground layer disposed on a second layer of the dielectric substrate, wherein the metal ground layer comprises a first
defected ground structure, the first defected ground structure comprising:

a first defected area, wherein a projection of the first defected area on the first layer is located inside a hairpin structure
of the first hairpin resonator;

a second defected area, wherein a projection of the second defected area on the first layer is located in a first direction
opposite to an opening direction of the first hairpin resonator; and

a third defected area connecting the first defected area and the second defected area, the third defected area having a length
along a second direction perpendicular to the first direction, wherein the length is smaller than a maximum length of the
first defected area along the second direction;

wherein the U-shaped metal strip comprises a first metal segment, a second metal segment, and a third metal segment, the second
segment connects the first metal segment and the third metal segment, and a projection of the third defected area on the first
layer is perpendicular to the second metal segment of the U-shaped metal strip.

US Pat. No. 9,711,840

ANTENNA STRUCTURE AND ELECTRONIC DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. An antenna structure, comprising:
an antenna body, comprising an annular metal sheet, wherein the shape of the annular metal sheet is substantially a rectangle
having a first long side and a second long side opposite to the first long side; and

a washer body, connected to one side of the annular metal sheet, the washer body having a screw hole;
wherein the annular metal sheet surrounds the washer body, the washer body is connected to the second long side, and the annular
metal sheet extends upward from the washer body,

wherein the antenna body is a dipole antenna, the antenna body further comprises a first metal sheet and a second metal sheet,
the annular metal sheet has a gap located near the center of the first long side, the gap separates the first long side into
a first half section and a second half section, the first metal sheet extends from the first half section at one end of the
gap, and the second metal sheet extends from the second half section at the other end of the gap,

wherein part of the first metal sheet and part of the second metal sheet extend toward opposing directions, the extending
direction is parallel to the first long side, the length of the first metal sheet and the length of the second metal sheet
are substantially equal.

US Pat. No. 10,122,093

DIPOLE ARRAY ANTENNA

Sercomm Corporation, Tai...

1. A dipole array antenna, comprising:a feeding terminal for feeding a radio-frequency signal;
a ground terminal;
a first transmission line electrically connected to the feeding terminal;
a second transmission line electrically connected to the ground terminal; and
a plurality of antenna units, wherein each of the antenna units comprises:
a first radiator electrically connected to the first transmission line, and comprising:
a first arm electrically connected to the first transmission line, and extending toward a first direction; and
a second arm electrically connected to the first transmission line, and extending toward the first direction; and
a second radiator electrically connected to the second transmission line, and comprising:
a third arm electrically connected to the second transmission line, and extending toward an opposite of the first direction; and
a fourth arm electrically connected to the second transmission line, and extending toward the opposite of the first direction;
wherein a first current route of the first radiator includes a first direct trace and a first meandering trace, the first direct trace extends from the first transmission line toward at least a quarter of the first arm and the second arm, and the first meandering trace extends from the first direct trace to at most three quarters of the first arm and the second arm;
wherein a second current route of the second radiator includes a second direct trace and a second meandering trace, the second direct trace extends from the second transmission line toward at least a quarter of the third arm and the fourth arm, and the second meandering trace extends from the second direct trace to at most three quarters of the third arm and the fourth arm.

US Pat. No. 10,042,084

REFLECTIVE TYPE PIR MOTION DETECTION SYSTEM

Sercomm Corporation, Tai...

1. A reflective type passive infrared (PIR) motion detection system, comprising:a housing;
a sensor element disposed on the housing; and
a reflecting element disposed on the housing and having a plurality of reflecting tiers, wherein each of the reflecting tiers has a plurality of reflecting curved surfaces, the reflecting curved surfaces are arranged along a first axial direction in sequence, the reflecting tiers are arranged along a second axial direction in sequence, and the reflecting curved surfaces in each of the reflecting tiers respectively have different azimuth angles relative to a third axial direction and are adapted to respectively reflect infrared rays from different sensed positions onto the sensor element, wherein
an aperture width of each of the reflecting curved surfaces along a direction perpendicular to the second axial direction is positively correlated with a reciprocal of a cosine value of the corresponding azimuth angle.

US Pat. No. 9,791,173

HEATING DEVICE HAVING HEATING TRANSISTOR UNIT

Sercomm Corporation, Tai...

1. A heating device, comprising:
a heating transistor unit;
a temperature sensing unit, configured to sense an ambient temperature and accordingly output a temperature sensing voltage;
a driving unit, coupled to the heating transistor unit and the temperature sensing unit, configured to drive the heating transistor
unit to perform heating based on the temperature sensing voltage;

an activating unit, coupled to the temperature sensing unit and configured to output an activating signal based on the temperature
sensing voltage when a sensed temperature has risen to a preset temperature, wherein the heating device activates an electronic
apparatus according to the activating signal; and

a hysteresis unit, coupled between the temperature sensing unit and the driving unit, wherein the hysteresis unit outputs
a first voltage based on the temperature sensing voltage to enable the driving unit when the sensed temperature has risen
to a first temperature, and outputs a second voltage based on the temperature sensing voltage to disable the driving unit
when the sensed temperature has dropped to a second temperature, wherein the first temperature is higher than the second temperature.

US Pat. No. 9,749,210

METHOD FOR MEASURING NETWORK THROUGHPUT

SERCOMM CORPORATION, Tai...

1. A method at a time synchronization protocol slave device, the method comprising:
exchanging a plurality of messages with a time synchronization protocol server in compliance with a time synchronization protocol;
synchronizing a slave clock with a master clock of the time synchronization protocol server according to time information
related to the plurality of messages;

calculating at least one network throughput according to the time information and size information related to the plurality
of messages; and

reducing a radio frequency transmission power when the at least one network throughput is insufficient.

US Pat. No. 10,057,836

SMALLCELL AND OPERATING METHOD THEREOF

SERCOMM CORPORATION, Tai...

1. An operating method of a smallcell, comprising:acquiring a signal status from a set of user equipments (UEs) in a coverage area of the smallcell;
selecting at least one target UE from the set of UEs according to the signal status, wherein the at least one target UE is estimated as having better signal quality than remaining UE(s) in the set of UEs according to the signal status; and
serving the at least one target UE as primary user(s) and serving the remaining UE(s) as non-primary user(s).

US Pat. No. 9,692,565

AUTOMATIC FREQUENCY CALIBRATION METHOD AND SMALL CELL USING THE SAME

SERCOMM CORPORATION, Tai...

1. An automatic frequency calibration method of a small cell, wherein the automatic frequency calibration method comprises:
receiving a set of at least one broadcasting message in a surrounding environment;
determining whether part of the at least one broadcasting message is transmitted from at least one first type base station,
wherein a signal coverage of the first type base station is larger than a signal coverage of the small cell;

when part of the at least one broadcasting message is transmitted from the first type base station, calibrating a frequency
of the small cell according to one of the at least one first type base station whose signal strength is maximum among all
of the at least one first type base station; and

when all of the at least one broadcasting message are not transmitted from the first type base station, calibrating the frequency
of the small cell according to an average frequency offset of at least two reference base stations which are selected from
at least two second type base stations, wherein a signal coverage of each of the second type base stations is smaller than
the signal coverage of the first type base station.

US Pat. No. 10,111,097

METHOD FOR NETWORK TRAFFIC ROUTING

Sercomm Corporation, Tai...

1. A method for network traffic routing for a user equipment of a wireless communication system, the method comprising:connecting to a small cell of the wireless communication system;
transmitting a user identity information to the small cell;
receiving an authentication result of an authentication procedure from the small cell; and
obtaining a local service via the small cell and a local network connecting to the small cell without going through a core network connecting to the small cell when the authentication result indicates that the user equipment passes the authentication procedure.

US Pat. No. 10,211,994

POWER SUPPLY SYSTEM, POWER SOURCING EQUIPMENT, AND ETHERNET Y CABLE

SERCOMM CORPORATION, Tai...

1. A power sourcing equipment to be connected to an Ethernet cable, the power sourcing equipment comprising:a switching circuit;
a power circuit, coupled to a power supply output terminal via the switching circuit; and
a detection circuit, configured to control a state of the switching circuit according to a first resistance between a first pin and a second pin of the Ethernet cable.

US Pat. No. 10,368,388

METHOD FOR PEER TO PEER COMMUNICATION AND RELATED COMMUNICATION DEVICE

Sercomm Corporation, Tai...

1. A method for P2P communication, for a first base station of a mobile communication system, where a base station interface is established between the first base station and a second base station of the mobile communication system, the method comprising:obtaining an IP address of a first user equipment and a TEID corresponding to a radio bearer established between the first user equipment and the first base station;
transmitting first routing information to the second base station via the base station interface, wherein the first routing information includes the IP address of the first user equipment, the TEID corresponding to the radio bearer between the first user equipment and the first base station, and an IP address of the first base station;
receiving second routing information from the second base station via the base station interface, wherein the second routing information includes an IP address of a second user equipment, a TEID corresponding to a radio bearer between the second user equipment and the second base station, and an IP address of the second base station;
storing the second routing information;
receiving a data transmission requesting message from the first user equipment, wherein the data transmission requesting message includes an IP packet and a target IP address of a target user equipment;
determining whether the target IP address is the same as the IP address of the second user equipment in the second routing information;
obtaining the TEID corresponding to the radio bearer between the second user equipment and the second base station and the IP address of the second base station in the second routing information if the target IP address is the same as the IP address of the second user equipment in the second routing information;
generating a user data packet, wherein the user data packet includes a user datagram protocol header (UDP-Header), a general packet radio service tunneling protocol header (GTP-Header) and the IP packet, and a TEID field of the GTP-Header is configured according to the TEID corresponding to the radio bearer between the second user equipment and the second base station in the second routing information; and
transmitting the user data packet to the second base station via the base station interface according to the IP address of the second base station in the second routing information;
wherein the base station interface does not pass through a core network of the mobile communication system.

US Pat. No. 10,216,067

INTERNET PROTOCOL CAMERA WITH EFFICIENT HEAT CONDUCTION PATH

Sercomm Corporation, Tai...

1. An IP Camera comprising:a housing;
a heat conducting component disposed inside the housing to directly contact a heat generating component;
a base to be put on or fixed onto a supporting plane, so as to hold a weight of the IP Camera by the supporting plane; and
a supporting structure, an end of the supporting structure extending through the housing to directly contact the heat conducting component, and the other end of the supporting structure extending through the base to hold a weight of the housing by the base; and
a heat isolating component covering a part of the supporting structure located between the housing and the base;
wherein the heat conducting component and the supporting structure are used to provide an uninterrupted heat conduction path between the heat generating component and the base, and a coefficient of heat conductivity of the uninterrupted heat conduction path is greater than 5 W/m*K.

US Pat. No. 10,257,473

DOORBELL DEVICE AND METHOD THEREOF

SERCOMM CORPORATION, Tai...

1. A doorbell device, comprising:a first camera unit, comprising a first camera lens and a first image sensor, configured to generate a first video;
a second camera unit, comprising a second camera lens and a second image sensor, configured to generate a second video;
a doorbell button;
the first camera unit and the second camera unit configured to be integrated into a single doorbell device;
a processing unit, configured to selectively activate one of the first camera unit and the second camera unit according to at least one of the first video, the second video, and a state of the doorbell button,
wherein the processing unit is configured to activate the first camera unit when the doorbell button is pressed, and wherein a field of view of the first camera unit is smaller than a field of view of the second camera unit;
the processing unit is configured to activate the second camera unit a predetermined time period after the doorbell button is pressed; and
capturing, by the first camera unit, an image of a visitor to be uploaded via network connection when the first camera unit is activated.

US Pat. No. 10,237,776

METHOD FOR CONTROLLING TRANSMISSION RATE AND WLAN DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A method for controlling transmission rate used in a wireless local area network (WLAN) device, the method comprising:calculating a bandwidth requirement of the WLAN device according to a network application service provided by the WLAN device in an application layer; and
determining a WLAN data transmission rate of the WLAN device in a physical layer according to the bandwidth requirement,
wherein the step of determining the WLAN data transmission rate of the WLAN device in the physical layer comprises:
increasing the WLAN data transmission rate if the WLAN data transmission rate is currently not greater than the bandwidth requirement and the WLAN data transmission rate is currently not determined according to the physical layer environment.

US Pat. No. 10,325,453

DOORBELL DEVICE AND ASSOCIATED CONTROL METHOD

SERCOMM CORPORATION, Tai...

1. A doorbell device, having a first power input terminal and a second power input terminal, the doorbell device coupled to a chime device, the doorbell device comprising:a current sensing circuit coupled to the first power input terminal, for generating a sensing voltage according to a current flowing through the current sensing circuit;
a switch circuit coupled between the current sensing circuit and the second power input terminal, wherein the switch circuit changes a conducting state in response to a control signal;
a processing circuit, configured to provide the control signal and determine a type of the chime device according to the sensing voltage;
a heating circuit;
a temperature sensing circuit, configured to control the heating circuit according to a sensed temperature, turn on the heating circuit when the processing circuit determines the chime device as analog and the sensed temperature is lower than a first threshold temperature, and turn off the heating circuit when the sensed temperature is higher than a second threshold temperature;
a battery; and
a charging circuit, configured to be controlled by the processing circuit to provide a charging current to the battery, and controlled by the processing circuit to decrease the charging current when the processing circuit determines the chime device as analog and the heating circuit is turned on.

US Pat. No. 10,278,201

METHOD FOR TRANSMITTING UPLINK GRANT AND BASE STATION

SERCOMM CORPORATION, Tai...

1. A method for transmitting an uplink grant message, adapted to a base station, the method comprising:calculating a downlink speed currently used by a user equipment;
obtaining a service type currently used by the user equipment; and
determining whether to assign an uplink grant to the user equipment according to the downlink speed and the service type;
wherein the step of determining whether to assign the uplink grant to the user equipment comprises:
determining whether to assign the uplink grant to the user equipment further according to a TCP window utilization rate of a server; and
when the downlink speed is greater than a speed threshold, when the service type is a TCP service, and when a TCP window utilization rate is greater than a utilization rate threshold, determining to assign the uplink grant to the user equipment.

US Pat. No. 10,320,077

BROADBAND ANTENNA

Sercomm Corporation, Tai...

1. A broadband antenna, comprising:a ground member;
a first radiation member for providing a first resonance path to make the broadband antenna cover a first frequency band; and
a second radiation member for providing a second resonance path to make the broadband antenna cover a second frequency band, wherein a first end of the second radiation member is directly connected to a first end of the first radiation member to form a first commonly-connected end, the first commonly-connected end has a feed point directly connected to the first end of the first radiation member and the first end of the second radiation member, a second end of the first radiation member is connected to a second end of the second radiation member to form a second commonly-connected end, and the second commonly-connected end is connected to the ground member, wherein the first radiation member is surrounded by the second radiation member and is spaced apart from the second radiation member by a gap, wherein the gap is located solely on a first plane and a second plane perpendicular to the first plane.

US Pat. No. 10,374,267

BATTERY STATUS DETECTION METHOD AND NETWORK DEVICE USING THE SAME

SERCOMM CORPORATION, Tai...

1. A battery status detection method for a network device to detect whether a battery enters a low battery state, comprising:iteratively executing the following steps:
obtaining a current voltage value and a previous voltage value of the battery by a voltage sensor;
calculating a difference between the current voltage value and the previous voltage value by a determination logic circuit;
adjusting a value of a low battery state indicator based on a first adjustment scheme when the difference is greater than or equal to a first threshold by the determination logic circuit; and
determining whether to control a transmitting circuit to output a low battery warning signal according to the low battery state indicator by the determination logic circuit, wherein when the value of the low battery state indicator crosses a second threshold, the low battery warning signal is output.