Transceivers Patents (Class 398/128)
  • Patent number: 10128949
    Abstract: A wide-field telescope and focal plane array (FPA) that look at Earth and satellites in low- and medium-Earth orbit (LEO and MEO) from a satellite in higher orbit, such as geostationary Earth orbit (GEO), can serve as a node in an on-demand, optical multiple access (OMA) communications network. The FPA receives asynchronous low-rate signals from LEO and MEO satellites and ground stations at a signal rate determined in part by the FPA frame rate (e.g., kHz to MHz). A controller tracks the low-rate signals across the FPA as the signal sources orbit Earth. The node also includes one or more transmitters that relay the received information to other nodes via wavelength-division multiplexed (WDM) free-space optical signals. These other signals may include low-rate telemetry communications, burst transmissions, and continuous data relay links.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: November 13, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Don M. Boroson, Bryan S. Robinson, Robert J. Menrad, John Rush, Kenneth Perko
  • Patent number: 9979481
    Abstract: A bidirectional data communications cable is disclosed. The cable includes first connector, second connector, and cable housing coupled to the first and second connectors. The first connector includes a controller configured to determine whether the first connector is connected to a data source or data sink. If connected to a data source, the controller configures a switch circuit to route a data signal from the data source to an optical modulator for modulating an optical signal for transmission from the first to the second connector via an optical fiber. If connected to a data sink, the controller configures the switch circuit to route a data signal from an optical demodulator to the data sink, the optical demodulator receiving an optical signal modulated with the data signal from the second connector via an optical fiber. The second connector is configured similar to the first connector. The cable housing encloses the optical fibers.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: May 22, 2018
    Assignee: cosemi technologies, inc.
    Inventors: Devang Parekh, Nguyen X. Nguyen
  • Patent number: 9973281
    Abstract: Optical signal receivers and methods are provided that include an optical resonator that allows an optical signal to enter and optical signal energy to accumulate at regions inside the optical resonator. A portion of optical signal energy is emitted from among various regions of the optical resonator, such that a combination of the emitted optical signal energy is disturbed when a phase transition occurs in the received optical signal. A detector aligned with the output detects the combined emitted optical signal energy and is configured to detect the disturbance and determine a characteristic of the phase transition in the received optical signal based upon the disturbance.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: May 15, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: Andrew Kowalevicz, Gary M. Graceffo, Benjamin P. Dolgin
  • Patent number: 9939886
    Abstract: A data communication method enabling wireless sharing of files or data between electronic devices that can store information and/or generate information by means of touch surface (capacitive or multi-touch), display units (LCD, led, etc.), photo sensor and frame having negative electrical conductivity.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: April 10, 2018
    Inventor: Osman Colakoglu
  • Patent number: 9797733
    Abstract: Navigation system and method of determining a vehicle position A navigation system comprises an image sensor configured to capture image data. A map database comprises street lighting data which includes, for a plurality of street lights (41), position data indicating a position (31) at which a street light (41) is installed and height data indicating a height (34) at which a light source (42) of the street light (41) is located. A processing device is configured to refine a position estimate by analyzing the image data using the street lighting data.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: October 24, 2017
    Assignee: HARMAN BECKER AUTOMOTIVE SYSTEMS GMBH
    Inventor: Marek Strassenburg-Kleciak
  • Patent number: 9793990
    Abstract: A worker management device that manages a worker wearing workwear includes: a main body; a light receiver that is provided on a part of the main body that is exposed when the main body is attached to the workwear, and receives light including predetermined identification information; a controller connected to the light receiver; and a communication unit connected to the controller.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: October 17, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shigeaki Yamasaki, Yoshihiko Matsukawa, Masaaki Ikehara
  • Patent number: 9774396
    Abstract: An example of a power and modulation circuit utilizes a very high frequency switching power converter to supply drive current power to cause a solid state light source to emit light. The power converter is configured to convert power from a power source to direct current to supply via the output to the light source, at least in part by a switching function of the power converter at a very high frequency rate. The circuit, in such an example, also includes a control circuit coupled to be responsive to input data and control operation of the power converter so that the current output to drive the light source modulates the light emitted from the light source to also carry the input data.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: September 26, 2017
    Assignee: ABL IP HOLDING LLC
    Inventor: Rashmi Kumar Raj
  • Patent number: 9749123
    Abstract: A method includes receiving an optical signal through an optical link and determining a receiving power for the optical link. The method further includes comparing the receiving power for the optical link to a first receiving power threshold and transitioning a clock and data recovery circuit form a normal mode to a holdover mode when the receiving power is less than the first receiving power threshold. The clock and data recovery circuit, when operating in the holdover mode, configured to hold a recovered clock to a known-good clock frequency. When the receiving power for the optical link is greater than a second receiving power threshold, the method initiates a transition of the clock and data recovery circuit from the holdover mode to the normal mode and reacquires synchronization between the recovered clock and a current rate of the incoming data stream using the known-good clock frequency.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 29, 2017
    Assignee: Google Inc.
    Inventors: Leon Zhou, Sheng-Hui Yang
  • Patent number: 9584137
    Abstract: A phase synchronized optical master-slave loop comprises at the slave-end a processor (105) configured to include a first timing signal into a bit stream to be transmitted to the master-end, detect a second timing signal from a bit stream received from the master-end, and calculate a phase difference between a regenerated phase signal and a reference phase signal on the basis of a transmission moment of the first timing signal, a first time-stamp indicating a reception moment of the first timing signal at the master-end, a reception moment of the second timing signal, and a second time-stamp indicating a transmission moment of the second timing signal from the master-end. The processor is configured to read the time stamps from the received bit stream that corresponds to a received light signal according to a reception line-code. Thus, conversion of data format is not necessary for the phase synchronization.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: February 28, 2017
    Assignee: CORIANT OY
    Inventor: Kenneth Hann
  • Patent number: 9461741
    Abstract: Provided are a signal transmission method and apparatus. In the signal transmission method, a terminal device obtains a signal to be sent; and the terminal device sends the signal through a visible light medium, wherein after being demodulated, the signal sent through the visible light medium is carried on a power line for transmission. By virtue of the solution, the problem in related technologies regarding the integration of the visible light communication as a wireless access manner with the power line communication technology is solved, the construction of the communication network can be more convenient and faster, and the advantages of the visible light communication and the power line communication technology are fully utilized.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: October 4, 2016
    Assignee: ZTE CORPORATION
    Inventors: Zhou Zhi, Lin Chen, Chen Lu
  • Patent number: 9438337
    Abstract: Free space optics (FSO) is a wireless technology that utilizes optical frequencies. Previously available FSO transceivers are restricted to point-to-point links because of the high directivity of laser light used to transmit data. By contrast, various implementations disclosed herein include a multi-beam FSO apparatus that is less reliant on point-to-point links, and includes a lens assembly and a planar array of optical communication devices. The lens assembly includes at least one surface shaped to direct ingress light received substantially within a first angular range towards a focal plane, and to direct egress light away from the focal plane into the first angular range. The planar array includes a plurality of optical communication devices arranged in association with the focal plane of the lens assembly, wherein each of the plurality of optical communication devices characterizes at least one of a plurality of optical communication link endpoints.
    Type: Grant
    Filed: May 31, 2014
    Date of Patent: September 6, 2016
    Assignee: Cisco Technology, Inc.
    Inventor: Charles Calvin Byers
  • Patent number: 9432116
    Abstract: An example of a power and modulation circuit utilizes a very high frequency switching power converter to supply drive current power to cause a solid state light source to emit light. The power converter is configured to convert power from a power source to direct current to supply via the output to the light source, at least in part by a switching function of the power converter at a very high frequency rate. The circuit, in such an example, also includes a control circuit coupled to be responsive to input data and control operation of the power converter so that the current output to drive the light source modulates the light emitted from the light source to also carry the input data.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: August 30, 2016
    Assignee: ABL IP HOLDING LLC
    Inventor: Rashmi Kumar Raj
  • Patent number: 9432109
    Abstract: A satellite communication terminal may comprise an outdoor part and an indoor part. Either the indoor part or the outdoor part may comprise a modem configured for communicating with a hub of a satellite communication system via a satellite and the outdoor part of the terminal. Methods are presented for sending indications from the outdoor part of the terminal to the modem, for example, to provide a person that may be installing the terminal with some control over the flow of the installation process while remaining outside (e.g., in the vicinity of the outdoor part of the terminal). In some embodiments, such indications may be used for triggering cross-polarization measurements and/or providing more elaborate information to the person installing the terminal without the need to leave the outdoor part of the terminal.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: August 30, 2016
    Assignee: Gilat Satellite Networks Ltd.
    Inventor: Dubi Lever
  • Patent number: 9397871
    Abstract: Devices, systems and methods are provided where a request may be transmitted based on a first encoding scheme, and a response to the request may be transmitted based on a second encoding scheme different from the first encoding scheme. The second encoding scheme may comprise an edge-based pulse width modulation encoding scheme.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 19, 2016
    Assignee: Infineon Technologies AG
    Inventor: Friedrich Rasbornig
  • Patent number: 9380227
    Abstract: An apparatus includes a processor and a recording medium having a program, the program causing the processor to execute operations. The operations include a normal mode and a visible light communication mode, wherein the normal mode and the visible light communication mode are switchable. In the normal mode, first image data is obtained by image capture with a first exposure time by sequentially starting exposure for a plurality of exposure lines in an image sensor each at a different time and each of the plurality of exposure lines partially overlaps in exposure time an adjacent exposure line. The visible light communication mode includes (i) setting a second exposure time of the image sensor, (ii) obtaining a bright line image including the plurality of bright lines, and (iii) obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained bright line image.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: June 28, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Mitsuaki Oshima, Koji Nakanishi, Hideki Aoyama, Ikuo Fuchigami, Hidehiko Shin, Tsutomu Mukai, Yosuke Matsushita, Shigehiro Iida, Kazunori Yamada
  • Patent number: 9328018
    Abstract: A graphene coated optic fiber is disclosed. An optic fiber core is encapsulated within a graphene capsule. An optic fiber having cladding layer encapsulated within a graphene capsule is also disclosed. The graphene capsule may comprise a single layer of graphene, bi-layer of graphene, or multiple layers of graphene. An optical circuit is disclosed that transmits ultraviolet light across an optic fiber encapsulated with graphene.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: May 3, 2016
    Inventor: Tyson York Winarski
  • Patent number: 9203514
    Abstract: According to one embodiment, a transmission system includes a transmitter and a receiver. The transmitter includes a modulator configured to modulate transmission data at a chip rate to generate a modulation signal, and one or a plurality of light sources configured to emit visible light according to the modulation signal. The receiver includes a light receiver having one or more lines of light receiving elements to receive light in a first range including the visible light; and a demodulator configured to demodulate image data generated according to the light received by the light receiver to generate reception data corresponding to the transmission data. A following equation is satisfied ff<fm where fm is the chip rate, and ff is a frame rate of the light receiver.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: December 1, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Jun Deguchi, Hideaki Majima, Toshiyuki Yamagishi, Nau Ozaki, Ichiro Seto, Koji Horisaki, Masahiro Sekiya, Hideki Yamada, Yuki Fujimura
  • Patent number: 9154229
    Abstract: Provided is an information processing system that includes a server and a client device. The server stores identification information and associated content in memory, and transmits the identification information, using light that varies over time as a communication medium. The client device continuously senses and decodes the light varying in time into the identification information, transmits the decoded identification information to the server, receives content transmitted from the server in response to the transmission of identification information, and displays received content. A controller included in the client device detects an operation on the displayed content from an input device, and applies control to transmit process details according to the detection to the server. The server additionally executes the process details transmitted from the client device, and updates the content to content that includes the execution results.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: October 6, 2015
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Nobuo Iizuka
  • Patent number: 9100124
    Abstract: An LED light fixture includes one or more optical transceivers that have a light support having a plurality of light emitting diodes and one or more photodetectors attached thereto, and a processor in communication with the light emitting diodes and the one or more photodetectors. The processor is constructed and arranged to generate a communication or data transfer signal.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 4, 2015
    Assignee: Federal Law Enforcement Development Services, Inc.
    Inventor: John C. Pederson
  • Patent number: 9088359
    Abstract: A system for transmitting data using light includes a plurality of light sources configured to transmit light at non-overlapping wavelengths, processing electronics, and a diffuser configured to diffuse the transmission of light. The processing electronics assign the plurality of light sources to a plurality of channels, accept a data stream, allocate the data stream to the channels, and modulate a transmission of the light using the allocated data stream, where the allocated data used to modulate a first light source of the plurality of light sources is separate from the allocated data used to modulate a second light source of the plurality of light sources.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: July 21, 2015
    Assignee: ELWAH LLC
    Inventors: Roderick A. Hyde, Jordin T. Kare
  • Patent number: 9037001
    Abstract: Methods and apparatus related to the detection of low-rate visible light communication (VLC) signals and the recovery of information communicated by the VLC signals are described. Various methods and apparatus are well suited for embodiments in which a device, e.g., a smartphone, including a camera which uses a rolling shutter. The rolling shutter facilitates the collection of different time snapshots of a received low rate time varying VLC signal with different pixel rows in the image sensor of a frame corresponding to different time snapshots. In some embodiments, demodulation is used to recover and identify a single tone being communicated in a frame from among a plurality of possible alternative tones that may be communicated, each different tone corresponding to a different set of information bits.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 19, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Jovicic, Thomas Joseph Richardson, Ivan Klimek
  • Patent number: 9014553
    Abstract: A satellite test signal reflection apparatus for testing transmitters sending out optical signals, the apparatus includes a plate that is at least partially permeable to optical signals. The plate has a base with a first surface with a residual reflective coating and a second surface. The residual reflective coating is configured to split an optical beam, which penetrates the plate in a first direction from the first surface to the second surface, into a reflective optical beam and a transmitted optical beam.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: April 21, 2015
    Assignee: Tesat-Spacecom GmbH & Co. KG
    Inventor: Andreas Weichert
  • Patent number: 9008519
    Abstract: A method of registering a wireless device located in premises in a wireless network which is constructed in the premises. The method includes receiving a light signal, which includes network identification information of the wireless network constructed in the premises from at least one illumination device installed in the premises, and registering the wireless device in the wireless network constructed in the premises, by using the network identification information of the wireless network included in the received light signal.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-man Park, Young-jun Choi
  • Patent number: 8995835
    Abstract: The embodiments provide an inverse channel apparatus and transmitter, receiver and system containing the apparatus; wherein the inverse channel apparatus comprises: an inverse nonlinear calculating unit configured to perform nonlinear additive calculation and nonlinear multiplicative calculation on input signals, so as to obtain signals containing nonlinear damage of the input signals on at least one polarization state; and an inverse linear calculating unit configured to calculate signals containing nonlinear damage and linear damage of the input signals on at least one polarization state according to the signals containing nonlinear damage of the input signals on at least one polarization state and a linear function of a channel.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 31, 2015
    Assignee: Fujitsu Limited
    Inventors: Weizhen Yan, Zhenning Tao
  • Patent number: 8995840
    Abstract: An apparatus and a method for providing synchronized data by using visible light communication includes, receiving a synchronization channel from a mobile communication base station using a specific mobile communication network, by a Light Emitting Diode (LED) lighting; analyzing the received synchronization channel, and extracting a synchronization signal for synchronizing the LED lighting with at least one LED lighting adjacent to the LED lighting; selecting a specific time slot of the synchronization signal based on IDentifications (IDs) of the LED lightings; and including a data frame of the LED lighting in the specific time slot, and transmitting the specific time slot, which includes the data frame of the LED lighting, to a mobile terminal.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Hong-Seok Shin, Dae-Kwang Jung, Jeong-Seok Choi, Kyung-Woo Lee, Sung-Bum Park, Ki-Uk Song
  • Publication number: 20150086213
    Abstract: An LED light and communication system includes at least one optical transceiver, the optical transceiver including a light support and a processor. The light support has a plurality of light emitting diodes and at least one photodetector attached thereto, the light emitting diodes receiving power from a power source. The processor is in communication with the light emitting diodes and the at least one photodetector, the processor capable of illuminating the light emitting diodes to simultaneously create at least one first light signal, and at least one second light signal, the first light signal being observable to the unaided eyes of an individual and the second light signal not being observable to the unaided eyes of the individual. The second light signal includes at least one data packet. The at least one data packet comprises global positioning system (GPS) location information.
    Type: Application
    Filed: December 2, 2014
    Publication date: March 26, 2015
    Inventors: John C. Pederson, Paul R. Brown, Timothy J. Vogt, James LeClaire, James Zimmerman, Brent Mikkelsen
  • Patent number: 8989586
    Abstract: Optical communications system (10) and method for transmission of payload data (PD) from a low earth orbit satellite (20) to an optical ground terminal (30), the low earth orbit satellite (20) being connectable with the optical ground terminal (30) via an optical downlink channel (DL), and the optical ground terminal (30) being connectable with the low earth orbit satellite (20) via an uplink channel (UC); wherein said uplink channel (UC) is an acquisition and tracking beacon channel by means of a ground beacon (GB) controlled by a point-acquisition-track subsystem (PAT), the ground beacon (GB) comprising a wide angle beam (W) for acquisition and a guidance beam (G) for tracking; and wherein the ground beacon (GB) for the uplink channel (UC) is a pulse position modulated PPM channel.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 24, 2015
    Assignee: RUAG Schweiz AG
    Inventors: Felix Andreas Arnold, Thomas Dreischer
  • Patent number: 8989583
    Abstract: A system and a method are disclosed for generating an infrared signal on a mobile device. The infrared signal is generated on a mobile device by generating a bitstream based on information to be transmitted as an infrared signal. The bitstream is modulated and output on a bus to an infrared-emitting diode. The bitstream is processed in a software layer configured on the computing device, enabling the computing device to generate and process signals without additional hardware configured on the device.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: March 24, 2015
    Assignee: Peel Technologies, Inc.
    Inventors: Samyeer Suresh Metrani, Siva Subramanian Muthukumarasamy
  • Patent number: 8989585
    Abstract: A free space optical communications link node 10 comprising transmitter apparatus 12 comprising a first optical transmitter 14, arranged to transmit high priority traffic on a first upstream optical signal having a first wavelength and at a first optical signal power, and a second optical transmitter 16 arranged to transmit low priority traffic on a second upstream optical signal having a second wavelength, different to the first wavelength, and at a second optical signal power. The node 10 further comprises receiver apparatus 18 comprising a first optical amplifier 20 arranged to receive and amplify a first downstream optical signal having a third wavelength and carrying high priority traffic and a second downstream optical signal having a fourth wavelength, different to the third wavelength, and carrying low priority traffic.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: March 24, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Ernesto Ciaramella, Antonio D'Errico
  • Patent number: 8989579
    Abstract: Optical downlink system (10) and method of optical data transmission between a remote terminal (20) having a number of n optical communication terminals (OT1-OTn), and a ground terminal (30) comprising a cluster of n optical ground stations (OGS1-OGSn) connected by n optical downlink channels (DL1-DLn) respectively n optical uplink channels (UC1-UCn) characterised by a spatial separation of the optical downlink channels (DL1-DLn) and a temporal separation of the optical uplink channels (UC1-UCn).
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 24, 2015
    Assignee: RUAG Schweiz AG
    Inventors: Felix Andreas Arnold, Thomas Dreischer
  • Patent number: 8983300
    Abstract: A system and a method are disclosed for receiving an infrared signal on a mobile device. The mobile device receives an infrared signal by creating an intermediate bitstream based on the received infrared signal. The intermediate bitstream is trimmed, downsampled, and demodulated in the time domain. The intermediate bitstream is then converted into a raw infrared code. The received bitstream is processed in a software layer, enabling the mobile device to process infrared signals without the use of additional hardware configured on the mobile device.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: March 17, 2015
    Assignee: Peel Technologies, Inc.
    Inventors: Samyeer Suresh Metrani, Siva Subramanian Muthukumarasamy
  • Publication number: 20150071646
    Abstract: Provided herein is a rack server including a rack, a plurality of system boards and a fan plate. The system boards are disposed within the rack, and each system board has a first wireless transceiver. The fan plate is also disposed within the rack, and the fan plate has a plurality of second transceivers, and the second transceivers are wirelessly connected to the first transceivers, respectively.
    Type: Application
    Filed: April 25, 2014
    Publication date: March 12, 2015
    Applicant: QUANTA COMPUTER INC.
    Inventors: Maw-Zan JAU, Wei-Yi CHU, Ting-Chen KO, Chia-Ming LIANG
  • Patent number: 8977135
    Abstract: A system comprises a transmitter including a laser configured to generate a laser beam directed at a spot on a surface, and a laser driver connected to the laser and configured to modulate input data onto the laser beam. The system may further comprise a receiver including an optical detector configured to decode received light into raw data, a signal processor configured to decode the raw data into the original input data, and telescope optics configured to receive light reflected from the spot on the surface, collimate the light and converge the light onto the optical detector.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: March 10, 2015
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Patent number: 8971716
    Abstract: Provided is an organic light emitting diode (OLED) display device for visible ray communication, including: a substrate; a plurality of OLED pixels that are formed on the substrate and generate a red (R), green (G), or blue (B) visible ray; and a plurality of light receiving units that are formed on the substrate to sense a visible ray signal and convert the visible ray signal to an electrical signal.
    Type: Grant
    Filed: July 4, 2013
    Date of Patent: March 3, 2015
    Assignee: Idro Co., Ltd.
    Inventor: Yanggi Kang
  • Patent number: 8971715
    Abstract: An apparatus of transmitting messages from an electronic device and display it on a mobile device, and a method of doing the same are disclosed. An exemplifying electronic device has an encoder to encode the data and a drive to modulate the signals into temporal and spatial light patterns according to the transmitted message. The light signals are then emitted from a group of LEDs on the electronic device. A video camera on a mobile device captures the light signals in the form of temporal and spatial patterns. A software application decodes the message and displays the message on the mobile device screen.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 3, 2015
    Inventors: Jingxi Zhang, Yang Zhang
  • Patent number: 8971720
    Abstract: A communications networking having reduced transmission latency and improved reliability is described. To reduce signal transmission latency, network management data is removed from a data stream to prioritize the transmission of payload data at higher transmission rates. Management data is returned to the data stream in such a way that it minimizes an impact to payload transmission rates. To improve communications network reliability, the network is configured to form a primary communication path and a redundant communication path. Upon failure of a transceiver at one node, the network engages redundant transceivers on a per-node basis thereby using a segment of the redundant communication path. The data stream is returned to the primary communication path upon circumvention of the failed transceiver.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 3, 2015
    Assignee: AOptix Technologies, Inc.
    Inventors: Eric Saint Georges, Joseph Shiran, Scott Alan Young
  • Patent number: 8965218
    Abstract: According to one embodiment, a photo detector-combined illuminance sensor includes a circuit for a Photo Detector (PD) function to detect the illuminance of the ambient environment. The illuminance sensor operates under the control of a controller in a visible light communication terminal. When an optical signal detected by the illuminance sensor is a visible light communication signal, the controller switches to cause the illuminance sensor to operate as the photo detector for the visible light communication in a visible light communication mode.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Seung Son, Tae-Han Bae, Eun-Tae Won
  • Patent number: 8965215
    Abstract: A display apparatus which supports wireless/optical communication is provided. The display apparatus includes a wireless/optical interface which performs wireless/optical communication with at least one first external apparatus, a power supply unit which supplies power to the wireless/optical interface, a user interface through which a device is selected, and a controller which controls power supply from the power supply unit to the wireless/optical interface according to user selection on the user interface.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: February 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-sung Na, Sun-ho Yang
  • Patent number: 8965213
    Abstract: An antenna device is provided, which includes a first antenna unit and a second antenna unit. The first antenna unit includes a first radiation module, a power divider/combiner network connected to the first radiation module, and a feeder interface connected to the power divider/combiner network. The feeder interface is configured to connect to a radio remote unit (RRU) or a base station. The second antenna unit includes a second radiation module, a transceiver array connected to the second radiation module, a baseband processing unit (BPU) connected to the transceiver array, and an interface connected to the BPU. The interface of the second antenna unit is configured to connect to a baseband unit (BBU). Therefore, after the existing passive antenna is replaced by the provided antenna device, the RRU or base station in the original network can still be used, which reduces waste of resources.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: February 24, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ming Zhao, Jianjun Chen, Xueru Liu, Pinghua He
  • Patent number: 8950933
    Abstract: A method, apparatus, and a non-transitory computer readable storage medium for supporting visible light communication (VLC) exchanges bitmaps for capabilities field exchange in a media access control (MAC) layer during link establishment and association with other VLC-enabled devices. An aggregation bitmap is generated to indicate whether a visible light communication (VLC) transmitter of a first device uses at least one aggregated band that comprises multiple active frequency bands. The aggregation bitmap is transmitted in a capabilities information exchange (CIE) signal to a second device. A guard bitmap that identifies a set of guard frequency bands is also generated and transmitted in the CIE signal. Each guard frequency band indicates leakage transmission from the VLC transmitter.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: February 10, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sridhar Rajagopal, Farooq Khan, Ying Li, Jaeseung Son
  • Patent number: 8948599
    Abstract: A network architecture for integrating a 4G wireless mesh network (WMN) with a 3-G network in order to effectively support multimedia communication is described. In one embodiment of the present invention, a wireless mesh network system comprises a plurality of routers each having a wireless optical interface; at least one base station having Internet backhaul and connecting to a wireless optical device; a computer media storing instructions for assigning at least one of the plurality of routers to act as an Internet gateway via said base station; wherein said assigned router and said base station communicating via a link between wireless optical interface of said assigned router and the wireless optical device connected to said base station, and said link is line-of-sight.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: February 3, 2015
    Inventors: Dharma P. Agrawal, Nishan S. Weragama, Hailong Li
  • Patent number: 8948602
    Abstract: An information system comprises a card and a card reader. The card and the card reader can be coupled by an optical communication module and an optical power transfer module. Operations of the card can be powered by the power transferred from the card reader through the optical power transfer module.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: February 3, 2015
    Inventor: Yang Pan
  • Patent number: 8942562
    Abstract: A stabilized ultra-high bandwidth capacity transceiver system that combines an E-band (71-76 GHz, 81-86 GHz) millimeter wave RF transceiver with an eye-safe adaptive optics Free Space Optical (FSO) transceiver as a combined apparatus for simultaneous point-to-point commercial communications. The apparatus has a high degree of assured carrier availability under stressing environmental conditions. The apparatus establishes and maintains pointing and stabilization of mmW RF and FSO optical beams between adjacent line of sight apparatuses. The apparatus can rapidly acquire and reacquire the FSO optical carrier link in the event the optical carrier link is impaired due to adverse weather.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: January 27, 2015
    Assignee: A Optix Technologies, Inc.
    Inventors: Chandrasekhar Pusarla, Srinivas Sivaprakasam, Joseph Shiran, Malcolm Northcott, J. Elon Graves, Howard Dando, Santanu Basu, Siegfried Fleischer
  • Patent number: 8942572
    Abstract: A lighting system includes light fixtures not in communications with and not synchronized with one another, and one or more light sensors. Each light fixture separately emits data encoded visible light including light fixture information encoded therein in a manner that avoids visually perceptible flicker and enables light fixture information emitted by one light fixture to be distinguished from light fixture information emitted by other light fixtures. The light fixture information is encoded into data encoded visible light such that a difference between different levels of the data encoded visible light is indicative of an illumination capability of the light fixture and such that visually perceptible flicker is avoided. Each light sensor separately receives portions of data encoded light visible light emitted by multiple light fixtures and separately determines the identity of and the maximum and present illumination contributions for each light fixture.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 27, 2015
    Inventor: Bret Rothenberg
  • Patent number: 8929742
    Abstract: An optical communication module in which the pin arrangement can be applied flexibly. An optical communication module has an outer shape formed based on normal standards and which is able to communicate with a host-side circuit board, etc. to which it is fitted, via a predetermined communication interface; wherein the optical communication module exchanges input/output I/F information with the circuit board, etc., and the communication interface can be switched to another communication interface based on these input/output I/F information.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 6, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventor: Masayuki Miura
  • Patent number: 8928893
    Abstract: The internal propagation of radiation between a radiation source and radiation detector mounted within a sensor package is prevented by the use of an optical isolator. The optical isolator is formed by the combination of a baffle mounted between the source and detector and a groove formed in an upper surface of the sensor package between the source and detector. A bottom of the groove is positioned adjacent to an upper edge of the baffle.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: January 6, 2015
    Assignees: STMicroelectronics (Research & Development) Limited, STMicroelectronics (Grenoble 2) SAS
    Inventors: Ewan Findlay, Colin Campbell, Gemma Ramsey, Eric Saugier
  • Publication number: 20150003832
    Abstract: A server is configured to manage second positional information, which shows a location of the lighting device, so that the second positional information is associated with the ID information of the lighting device. The server is configured to determine whether or not the ID information received from the receiving terminal is justifiable based on the second positional information, which corresponds to the ID information received from the receiving terminal, and the first positional information, which is received from the receiving terminal. The server is configured to reply, to the receiving terminal, the service information corresponding to the ID information received from the receiving terminal when determining that the ID information received from the receiving terminal is justifiable. The server is configured not to reply the service information to the receiving terminal when determining that the ID information received from the receiving terminal is not justifiable.
    Type: Application
    Filed: June 19, 2014
    Publication date: January 1, 2015
    Inventors: Shigeaki YAMASAKI, Eiji SHIOHAMA, Shojirou KIDO
  • Patent number: 8923701
    Abstract: A wireless communications link comprising an RF link and a free space optics (FSO) link, a switch, an RF signal monitoring apparatus, an optical signal monitoring apparatus, alarm apparatus and a controller. The switch operates in a normal mode to aggregate the links to form a link aggregation group and to route traffic on the link aggregation group, a first protection mode to route traffic on the FSO link, or a second protection mode to route traffic on the RF link. The controller is arranged to receive an alarm signal and to generate and transmit a control signal to cause the switch to operate in the first protection mode when a first alarm signal is received, the second protection mode when a second alarm signal is received, and the normal mode when an indicator is received indicating that both signal quality parameters are above their threshold values.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: December 30, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Antonio D'Errico, Marzio Puleri
  • Patent number: 8909056
    Abstract: A lighting node is described. One embodiment of the lighting node includes a lamp, a radio device, and a memory. The lamp is configured for generating illumination. The radio device is configured for radio communication. The radio device is configured to remotely receive a color profile from the controller. The lamp is also configured to generate illumination to substantially match the received color profile. The memory is configured to store a group identifier for the lighting node.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: December 9, 2014
    Assignee: Lumenetix, Inc.
    Inventor: Matthew D. Weaver
  • Patent number: 8903245
    Abstract: A method of generating an optical radiation signal is to be implemented by an optical radiation signal generating device including a dual beam generating unit for receiving an original optical input signal, and a second-order fiber Bragg grating (FBG). The dual-beam generating unit is configured to generate, from the original optical input signal, first and second optical input signals having a phase difference therebetween. The second-order FBG is configured to receive the first and second optical input signals, and to radiate an optical radiation signal by interference between the first and second optical input signals.
    Type: Grant
    Filed: April 30, 2012
    Date of Patent: December 2, 2014
    Assignee: I-Shou University
    Inventors: Nai-Hsiang Sun, Jung-Sheng Chiang, Wen-Fung Liu, Shih-Chiang Lin, Gary A. Evans, Jerome K. Butler