Transceivers Patents (Class 398/128)
  • Patent number: 11050487
    Abstract: The disclosed systems, apparatuses and methods are directed to controlling a difference between a first center frequency of a first optical subcarrier and a second center frequency of a second optical subcarrier of an optical super-channel signal in an optical network. The method comprises modulating the first optical subcarrier at a first optical side component frequency with a first side modulation frequency and modulating the second optical subcarrier at a second optical side component frequency with a second side modulation frequency. The method further comprises detecting a radio-frequency (RF) power at a modulated beat frequency tone in the modified optical signal.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: June 29, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhiping Jiang, Xuefeng Tang, Haitao Sun
  • Patent number: 10972707
    Abstract: An endoscope includes an optical module, the optical module including an optical element including a light emitting surface, an external electrode being disposed, out of a first region and a second region obtained by dividing the light emitting surface substantially in half, only in the first region, a wiring board including a first main surface where the optical element and a bonding electrode are disposed, a bonding wire connecting the external electrode and the bonding electrode to each other, a ferrule into which the optical fiber is inserted, a frame including an upper plate where the ferrule is disposed, including a side plate fixed to the first main surface, including an inner section housing the optical element and a side surface including an opening, and a transparent resin disposed in the inner section, wherein the upper plate is inclined at a predetermined inclination angle to the first main surface.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: April 6, 2021
    Assignee: OLYMPUS CORPORATION
    Inventor: Hideharu Miyahara
  • Patent number: 10951312
    Abstract: A transmitting device is disclosed. A lighting device changes a first characteristic and a second characteristic of light to be emitted along time series. A processor controls, in a period having a first time length, the lighting device to modulate the first characteristic of the light from the lighting device in the time series in accordance with a light emission pattern having a waveform according to information to be transmitted and having the first time length. The processor controls the lighting device to perform pulse modulation with a pulse pattern having a second time length shorter than the first time length for the second characteristic in accordance with the information. The processor sets peak and bottom values of the second characteristic of each pulse included in a subsection, for an average of the second characteristic to be a value maintaining the waveform of the light emission pattern.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: March 16, 2021
    Assignee: FUJITSU LIMITED
    Inventors: Kensuke Kuraki, Ryuta Tanaka
  • Patent number: 10887528
    Abstract: The method includes obtaining, using a face camera of a smart phone, identification information from a ceiling light of a facility with visible light communication, and obtaining location information of the ceiling light related to the identification information. The method also includes displaying a location related to the location information of the ceiling light on a map of the facility on a display of the smart phone. The smart phone is set on a cart in a state that the face camera is directed to a ceiling of the facility on which the ceiling light is attached, and the face camera is a CMOS sensor and the CMOS sensor is used only for the visible light communication.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: January 5, 2021
    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: 10797793
    Abstract: An electronic device is provided, which may include a biometric module, a processing module and a light transmission module. The biometric module may recognize a biological feature, and convert the biological feature into a biological feature signal via an analysis algorithm. The processing module may encrypt an international mobile equipment identity number of the electronic device and the biological feature signal to generate an encrypted signal, and convert the encrypted signal into a visible light signal. The light transmission module may transmit the visible light signal to a controlled device.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: October 6, 2020
    Assignee: TAMKANG UNIVERSITY
    Inventor: Shih-Hao Chang
  • Patent number: 10797794
    Abstract: A data communication system has: a cabin module with a transmission and reception unit; and a furniture module, which is fastened in a furniture item anchored in a cabin, and has a transmission and reception unit. The transmission and reception units each have a controllable light source and a light sensor. The furniture module is disposed relative to the cabin module such that light emanating from the light source of the transmission and reception unit of the cabin module is detectable by the light sensor of the transmission and reception unit of the furniture module and light emanating from the light source of the transmission and reception unit of the furniture module is detectable by the light sensor of the transmission and reception unit the one cabin module.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: October 6, 2020
    Assignee: LUFTHANSA TECHNIK AG
    Inventors: Sven Taubert, Christopher Petermann
  • Patent number: 10771311
    Abstract: A method and system. A first computer device sends to a second computer device, via a broadcast or multicast communication, an event notification of a notifiable management event, The first computer device may connect to a management network via only a first network switch, wherein the first computer device is unable to notify a management device of the notifiable management event via the management network because the first computer device is unable to connect to the management network via the first network switch. The first computer device receives, from the second computer device via a first unicast communication, an acknowledgment of the event notification, wherein the second computer device is able to connect to the management network via the second network switch. The broadcast or multicast communication and the first unicast communication each use a short-range wireless communications technology comprising visible light communication or data-over-audio communication.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: September 8, 2020
    Assignee: International Business Machines Corporation
    Inventors: Andrew S. Feltham, Colin I. Holyoake, Elizabeth J. Maple
  • Patent number: 10713550
    Abstract: A system for locating an asset can include a first visible light communication (VLC) device having a first controller, a first transceiver, and a first light source, where the first transceiver has a first range, where the first controller broadcasts, using the first transceiver, a first communication signal, where the first communication signal comprises an identification of the asset. The system can also include an asset communication device associated with the asset, where the asset communication device includes a second transceiver and a second controller, where the second transceiver has a second range, where the asset communication device is within the first range, where the second controller broadcasts, using the second transceiver, a second communication signal in response to the first communication signal, where the second communication signal comprises the identification of the asset.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: July 14, 2020
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventors: Adikaramge Asiri Jayawardena, Joseph Michael Manahan
  • Patent number: 10701043
    Abstract: Systems and methods for physical authentication of medical devices during wireless pairing are disclosed herein. The method can include receiving a request to initiate coupling. Following the request, a visual identifier can be generated with a light source. The visual identifier can include embedded data used to couple the medical devices. The visual identifier can be captured in image data, which image data can be analyzed and the embedded data can be extracted from the image data. Based on the embedded data that is extracted from the image data, secure coupling between medical devices can be established.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: June 30, 2020
    Assignee: TC1 LLC
    Inventor: Kevin Heppell
  • Patent number: 10666155
    Abstract: A synchronous rectification device is adapted to control a conversion circuit, where he conversion circuit includes: a primary side coil, configured to receive input power; and a secondary side coil, configured to generate inductive power in response to the input power. The synchronous rectification device includes: a first control circuit, configured to provide a first control signal to control the primary side coil; a secondary side switch, configured to generate an ON signal and an OFF signal according to the inductive power; an isolation coupling element; and a second control circuit. The isolation coupling element includes: a receiving side, configured to receive the first control signal; and a reaction side, configured to generate a coupling signal in response to the first control signal. The second control circuit outputs a second control signal according to the coupling signal, the ON signal, and the OFF signal to adjust the inductive power.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: May 26, 2020
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Tso-Jen Peng, Ssu-Hao Wang
  • Patent number: 10511771
    Abstract: Disclosed herein are techniques for dynamically configuring an image sensor of a mobile device for visible light communication (VLC) to an operational mode based on the position of the image of a VLC source on the image sensor and the different regions of interest (ROIs) of different operational modes of the image sensor. The operational mode that the image sensor is configured to has the smallest ROI among ROIs of operational modes that include at least a portion of the image of the VLC source on the image sensor. Techniques disclosed herein can reduce the power consumption of the mobile device during VLC communication and improve the effective sampling rate of VLC signals by the image sensor.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 17, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Ravi Shankar Kadambala, Bapineedu Chowdary Gummadi, Soman Nikhara
  • Patent number: 10476305
    Abstract: A system comprises an explosion proof device and an intrinsically safe device. The explosion proof device is coupled to a power supply. The intrinsically safe device includes a user interface. The explosion proof device is configured to induce inductive coupling with the intrinsically safe device. The inductive coupling between the explosion proof device and the intrinsically safe device enables the transfer of power from the explosion proof device to the user interface of the intrinsically safe device. The inductive coupling can additionally enable the transfer of data between the explosion proof device and the intrinsically safe device.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: November 12, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Benjamin Avery Freer, Stephan P. Iannce
  • Patent number: 10461860
    Abstract: A method of allocating transmission time slots in an optical wireless system. Resources are allocated taking account of asymmetry of interference diagrams on uplink and downlink and adopting reuse of transmission intervals for each channel, in areas in which there is no interference. In some embodiments, the allocation method allows for relaying between access points through the network to take account of the fact that the access point providing the best uplink (or downlink) can be distinct from the access point associated with the terminal.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: October 29, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: David Miras, Luc Maret, Mickael Maman
  • Patent number: 10447391
    Abstract: A hybrid optical-RF device, called a “stamp cell” herein, may be a small, passive repeating device that is designed to be placed close to User Equipment (UE) such that the UE only needs to reach a few meters using high frequency RF signals. The stamp cell may directly convert the received RF signal to an optical signal which may be transmitted to an optical receiver mounted on a traditional cell tower. Similarly, in the downlink direction, the stamp cell may receive optical signals from the cell tower and convert the optical signals to high frequency RF signals, which may be received by the UE.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: October 15, 2019
    Assignee: Verizon Patent and Licensing Inc.
    Inventor: Donna L. Polehn
  • Patent number: 10368005
    Abstract: A method includes setting an exposure time of an image sensor included in a terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image, including a plurality of bright lines, by capturing the subject, obtaining identification information of the subject, and obtaining an angle of light of the subject. The method further includes calculating a distance between the terminal device and the subject using the angle, obtaining a position of the subject that is specified by the identification information, and calculating a position of the terminal device using the distance and the position of the subject.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: July 30, 2019
    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: 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: 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: 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: 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: 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: 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