Optical Communication Over Freee Space Patents (Class 398/118)
  • Patent number: 12199676
    Abstract: A method and an apparatus for satellite laser broadband demodulation are provided. The method includes: setting a residual carrier to a carrier acquisition range of a receiver, pulling the residual carrier to an MHz level by adjusting a frequency of a local oscillator laser, and obtaining a precise carrier frequency according to an accurate frequency acquisition, such that the residual carrier enters a fast acquisition band of a carrier tracking phase-locked loop. After carrier acquisition is achieved, carrier tracking and data recovery processing are performed. According to the present disclosure, signal equalization of an ultra-high bandwidth/ultra-high bit rate can be implemented, and carrier acquisition, tracking, and demodulation are quickly achieved for a modulation signal in a high dynamic range.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: January 14, 2025
    Assignee: HUNAN MAXWELL ELECTRONIC TECHNOLOGY CO., LTD.
    Inventors: Chuansheng Zhang, Gaomao Gong, Haijun Zhao, Feng He, You Lv
  • Patent number: 12199667
    Abstract: An optical wireless communication (OWC) system comprising a first device comprising a transceiver apparatus and a plurality of further devices each comprising a respective further transceiver apparatus. The first device communicates via an optical channel with the plurality of further devices.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: January 14, 2025
    Assignee: pureLiFi Limited
    Inventors: Stephan Berner, Nikola Serafimovski, Mostafa Zaman Afgani
  • Patent number: 12192193
    Abstract: Methods, systems, and apparatuses are described herein for improving the security of computer authentication using light communications data provided by, e.g., environmental Li-Fi light sources. A mobile device may receive light communications data from a light source, such as a Li-Fi-enabled light bulb in a physical environment of the mobile device. That light communications data may indicate a variation in a modulation of light intensity of the light source over a time period. That variation might be used to provide a time- and/or location-specific key. The mobile device may determine the key by processing the light communications data and transmit a request for content that comprises the key. Access to content may be provided to the mobile device based on the key.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: January 7, 2025
    Assignee: Capital One Services, LLC
    Inventors: Joshua Kuehn, Dean Foster, Nicholas Capurso
  • Patent number: 12160264
    Abstract: An optical wireless communication (OWC) unit for transmitting and/or receiving data installable in a further device comprises at least one transmitter device for transmitting modulated light comprising an OWC signal of said data and/or at least one receiver device for receiving modulated light comprising an OWC signal representative of said data, wherein the at least one receiver device comprises at least one detector. The OWC unit further comprises analogue electronic circuitry for processing electronic signals and at least one power connection and/or at least one data connection for connection to a power source and/or processing resource of the further device. The OWC unit is operable to provide OWC communication under control of said further device and/or so as to transmit data from/provide data to said further device. The OWC unit is for use in an OWC system having an analogue bandwidth greater than or equal to 80 MHz.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: December 3, 2024
    Assignee: pureLiFi Limited
    Inventors: Duncan John William Walker, Luca Carraro, Christopher Nigel Tate, Mostafa Zaman Afgani, Steven Alexander Richard Ritchie, Arne Rossius, Tamas Weszely, Istvan Phillipe Bernard Csajaghy
  • Patent number: 12154298
    Abstract: When estimating color for a marker candidate region that is smaller in size than a DeBayer filter, a sever estimates the color of the marker candidate region using HSV average values that are the average values of the hue H, the saturation S, and the brightness V of the marker candidate region, in consideration of the Bayer array of color filters. Furthermore, the server appropriately corrects the HSV average values and converts the pixel format to convert the HSV average values to RGB (RGB average value values), and sets the RGB average values in all pixels of a marker region.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: November 26, 2024
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Naotomo Miyamoto
  • Patent number: 12143757
    Abstract: A cable free networking device stacking system includes networking devices that are each configured to operate as part of a networking device stack, and at least one LiFi device included on each of the networking devices. A first LiFi device on a first networking device in the plurality of networking devices transmits networking device stack data communications by receiving first electrical data communications from the first networking device, converting the first electrical data communications to first optical data communications, and wirelessly transmitting the first optical data communications to a second LiFi device included on a second networking device in the plurality of networking devices.
    Type: Grant
    Filed: November 18, 2022
    Date of Patent: November 12, 2024
    Assignee: Dell Products L.P.
    Inventors: Neal Beard, Shree Rathinasamy, Joe Shahram Ghalam
  • Patent number: 12126378
    Abstract: An extended reality headset has light-based communication transceivers coupled to the extended reality headset. The relative position of a remote transceiver with respect to the current position and orientation of the extended reality headset is determined. A line-of-sight is calculated from the light-based communication transceivers to the remote transceiver. The light-based communication transceivers emit a light-based communications beam in accordance with the calculated line-of-sight. The light-based communications beam is adjusted in response to changes to the relative position of the remote transceiver with respect to the current position and orientation of the extended reality headset.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: October 22, 2024
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Jouya Jadidian, Ashley N. Saulsbury, Mohit Narang, Ruben Caballero
  • Patent number: 12114113
    Abstract: An optical routing device that includes a mounting component which includes a rechargeable battery and a processor that communicates over-the-air with a master communication device or one or more service communication devices via RF supervisory links. The processor receives an instruction via the RF supervisory links to control a movement of the mounting component along with the optical routing component such that an angle or a direction of deflection of laser beams from an optical routing component of optical routing device is changed. The one or more laser beams are deflected from the optical routing component over-the-air for free-space optical communication among the master communication device and the one or more service communication devices via at least the optical routing device independent of optical fibers.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: October 8, 2024
    Assignee: Wireless Photonics LLC
    Inventors: Ahmadreza Rofougaran, Bahram Jalali, Mehdi Hatamian, Arman Rofougaran, Milan Rofougaran
  • Patent number: 12096537
    Abstract: A position estimation apparatus includes a selection circuit and an estimation circuit. The selection circuit selects at least one radio electronic device as an anchor used for estimating a position of a mobile terminal, based on first information and second information, the first information being related to an arrangement in a first region in which at least one of radio electronic devices including the at least one radio electronic device is arranged, the second information being related to a second region within which the mobile terminal is movable in the first region. The estimation circuit estimates a position of the mobile terminal based on third information related to radio communication quality between the anchor and the mobile terminal and on information related to the anchor in the first information.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: September 17, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junichi Morita, Naganori Shirakata
  • Patent number: 12088343
    Abstract: An apparatus includes a photonic integrated circuit having an optical phased array, where the optical phased array includes multiple unit cells. Each unit cell includes an antenna element configured to transmit or receive optical signals having a linear polarization of light. Each unit cell also includes a modulator configured to phase-shift the optical signals transmitted or received by the antenna element. Each unit cell further includes a quarter waveplate configured to convert between the linear polarization of light and a circular polarization of light.
    Type: Grant
    Filed: April 19, 2022
    Date of Patent: September 10, 2024
    Assignee: Raytheon Company
    Inventors: Stephen P. Palese, Duane D. Smith
  • Patent number: 12081264
    Abstract: A free space optical (FSO) transmitter emits multiple, orthogonally encoded, beacons having a known pattern of spatial overlap. A receiver includes a sensor and a computing system. The sensor senses the overlapping optical beacons and produces an output signal indicative of an optical power of the overlapping optical beacons. The computing system separates the output signal into components from the different beacons according to the orthogonal encoding of the beacons. Based on strengths of the components and on the known pattern of spatial overlap, the computing system may determine at least one of: (1) a position of the receiver relative to the transmitter, (2) a position of the receiver in the beacon pattern, or (3) an orientation of the receiver relative to the transmitter.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: September 3, 2024
    Assignee: SA PHOTONICS, INC.
    Inventors: Greg G. Mitchell, David A. Pechner, Andrew K. McClaren, Francis Gustav Muennemann
  • Patent number: 12081922
    Abstract: An optical routing device that includes a mounting component which includes a rechargeable battery and a processor that communicates over-the-air with a master communication device or one or more service communication devices via RF supervisory links. The processor receives an instruction via the RF supervisory links to control a movement of the mounting component along with the optical routing component such that an angle or a direction of deflection of laser beams from an optical routing component of optical routing device is changed. The one or more laser beams are deflected from the optical routing component over-the-air for free-space optical communication among the master communication device and the one or more service communication devices via at least the optical routing device independent of optical fibers.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: September 3, 2024
    Assignee: Wireless Photonics LLC
    Inventors: Ahmadreza Rofougaran, Bahram Jalali, Mehdi Hatamian, Arman Rofougaran, Milan Rofougaran
  • Patent number: 12075547
    Abstract: A system 10 to optimize a light emitting diode (LED) power allocation framework within a room is disclosed. The system 10 includes a data receiving subsystem 20, configured to receive parameters corresponding to light emitting diodes (LED), visible light communication (VLC) transmitters and visible light communication (VLC) receivers. The system 10 includes a blockage generalization subsystem 22, configured to identify location and height of one or more detected blockages within the room from the received parameters. The system 10 includes an optimal power allocation subsystem 24, configured to compute a visible light communication (VLC) channel gain for each of the one or more light emitting diodes (LED) with reference to identified location and identified height and configured to optimize the power allocation framework to achieve maximized visible light communication (VLC) data rate based on the computed visible light communication (VLC) channel gain and one or more constraints.
    Type: Grant
    Filed: January 26, 2023
    Date of Patent: August 27, 2024
    Assignee: COGNIZANT TECHNOLOGY SOLUTIONS INDIA PVT. LTD.
    Inventors: Anand Singh, Anand Srivastava, Vivek Ashok Bohara, Anand Kumar Jagadeesan
  • Patent number: 12068780
    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect, using an image sensor, an optical beacon of a network node. The UE may receive reference signals using a sweep of a plurality of beams that is based at least in part on a relative direction of the optical beacon of the network node. Numerous other aspects are provided.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: August 20, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Yehonatan Dallal, Idan Michael Horn, Shay Landis
  • Patent number: 12063068
    Abstract: A tracking system includes one or more cameras and machine-vision processors configured to track the position of a plurality of optical tracking emitters. Each of the plurality of tracking emitters is modulated with a message. The message includes identification information for any of the plurality of tracking cameras receiving the message, so that the cameras can track the location of each emitter.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: August 13, 2024
    Assignee: THE AEROSPACE CORPORATION
    Inventors: Alexander Clifton Utter, Chang Lee
  • Patent number: 12047119
    Abstract: A system and method are disclosed for providing a bi-directional data communication link within a LIDAR assembly that has a stationary portion attached to an autonomous vehicle and a second portion rotatably connected to the stationary portion. The second portion may include one or more emitting/receiving devices (e.g., lasers) for detecting objects surrounding the autonomous vehicle. A first printed circuit board assembly (PCBA) having a first optical transceiver may be located within the stationary portion. A second PCBA having a second optical transceiver may be located within the second portion. A hollow shaft may be positioned so as to extend between the stationary portion and the second portion.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: July 23, 2024
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Mark D. Entwistle
  • Patent number: 12034479
    Abstract: Proposed is a receiving UE for receiving a signal in optical wireless communication, according to the present disclosure. The receiving UE may include: a transceiver for receiving an optical signal of an orbital angular momentum (OAM) mode from a transmitting terminal; a demodulator composed of at least one phase shifter; a photoelectricity converter composed of at least one photodiode; and a processor connected to the transceiver, the demodulator, and the photoelectricity converter. In addition, the at least one phase shifter may convert an optical signal of the OAM mode into an optical signal of a Gaussian mode, and the at least one photodiode may convert an optical signal of the Gaussian mode into an electrical signal.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: July 9, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Sangrim Lee, Byounghoon Kim
  • Patent number: 12028152
    Abstract: A transmission device includes a symbol generator that generates a modulation symbol by mapping transmission data to a signal point arranged in a two-dimensional or three-dimensional color space; and an outputter that outputs an optical signal modulated according to the modulation symbol.
    Type: Grant
    Filed: February 6, 2023
    Date of Patent: July 2, 2024
    Assignee: Panasonic Intellectual Property Corporation of America
    Inventors: Yutaka Murakami, Nobuhiko Hashida
  • Patent number: 12028114
    Abstract: An apparatus includes a tunable optical carrier source configured to generate a tunable optical carrier and a fixed wavelength optical carrier source configured to generate a fixed wavelength optical carrier. The apparatus also includes first and second optical modulators configured to modulate the tunable optical carrier and the fixed wavelength optical carrier based on first and second of multiple input signals. The apparatus further includes a delay element configured to delay the modulated tunable optical carrier, first and second optical detectors coupled to the delay element, and third and fourth optical modulators coupled to the first and second optical detectors.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: July 2, 2024
    Assignee: Raytheon Company
    Inventor: Vahid Ataie
  • Patent number: 12009860
    Abstract: A visual light communication (VLC) method for a lighting system comprising an LED driver and a plurality of LEDs or LED groups includes the steps of: receiving a set-point representing a desired illumination characteristic, comprising an intensity set-point, a color set-point or a combination thereof, and data that is to be transmitted using VLC; determining a current profile for each LED or LED group of the plurality of LEDs or LED groups based on the desired illumination characteristic represented by the set-point, whereby an envelope of a combined current profile is modulated for a corresponding intensity variation as perceived by a sensor to represent a variable length VLC code comprising one or more code words; and generating one or more control signals to drive the plurality of LEDs or LED groups in accordance with the current profiles for the plurality of LEDs or LED groups to transmit the VLC code.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: June 11, 2024
    Assignee: eldoLab Holding B.V.
    Inventors: Marc Saes, Andy Johanna Elisabeth Otten
  • Patent number: 11949450
    Abstract: Systems, apparatus, methods, and articles of manufacture are disclosed for code merging in communication systems. An example apparatus includes at least one memory, machine-readable instructions, and processor circuitry to at least one of instantiate or execute the machine-readable instructions to at least identify first data as line-of-sight data based on a first range of a first target object, identify second data as multipath data based on a second range of a second target object, after a determination that the second data includes a data portion not included in the first data, output communication data based on a merge of the first data and the second data, and cause movement of at least one of the first target object or the second target object based on the communication data.
    Type: Grant
    Filed: September 14, 2022
    Date of Patent: April 2, 2024
    Assignee: The Boeing Company
    Inventor: Leslie Alexander Nixon
  • Patent number: 11929785
    Abstract: An optical communication system which is tunable and polarization insensitive is provided herein. The optical communication system may comprise an optical bench coupling an optical transmit pathway and an optical receiving pathway to an external pathway. The optical bench includes a polarization insensitive optical circulator. The system may further include a tunable component positioned along the optical receiving pathway, and a controller coupled to the tunable component.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: March 12, 2024
    Assignee: HONEYWELL LIMITED HONEYWELL LIMITÉE
    Inventors: Thomas Ducellier, Hugh Podmore, Alan Scott
  • Patent number: 11922904
    Abstract: The present disclosure relates to an information processing apparatus, an information processing method, and a program that allow for preventing a decrease in marker recognition rate. Display of a content image that moves in a first display surface on which a marker image is displayed in a display form in which at least a part of the marker image is not shielded is controlled on the basis of first information regarding feature points of the marker image displayed on the first display surface of a terminal device; and second information regarding the feature points of the marker image on the first display surface in the display form is acquired from image data of a captured image obtained by imaging the first display surface, and a position and an orientation of the terminal device are detected on the basis of the image data.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: March 5, 2024
    Assignee: SONY GROUP CORPORATION
    Inventors: Maho Hayashi, Tetsuo Ikeda, Eisuke Fujinawa, Ryusei Koike
  • Patent number: 11916592
    Abstract: A communication system has a plurality of LEO satellites in a specified orbital plane and a plurality of trunk satellites in a medium earth orbit. Each LEO satellite acquires satellite-specific data and includes inter-satellite links with adjacent LEO satellites. Each trunk satellite includes inter-satellite links adjacent trunk satellites. One of the trunk satellites operates as a relay trunk satellite in position to maintain optical communication with a specified ground station on the Earth. Each LEO satellite has a limited field of regard to establish optical communication with any trunk satellite. A relay LEO satellite is configured to establish optical communication with a corresponding trunk satellite. The plurality of LEO satellites relay aggregated data to the relay LEO satellite. The relay LEO satellite relays the aggregated data to the corresponding trunk satellite. The relay trunk satellite relays the received aggregated data to the corresponding ground station.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: February 27, 2024
    Assignee: Honeywell Limited Honeywell Limitée
    Inventors: Alan Scott, Thomas Ducellier
  • Patent number: 11916625
    Abstract: An antenna arrangement comprises a body which in turn comprises a plurality of antenna devices, the antenna arrangement being characterized in that the body has a flexible structure and an elongated shape.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: February 27, 2024
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: PÃ¥l Frenger, Jan Hederen, Martin Hessler, Giovanni Interdonato
  • Patent number: 11916591
    Abstract: In an example method, a first computer system accesses, via a first communication network, data for transmission to a second computer system, generates an optical representation of the data, and presents the optical representation of the data to the second computer system via a free space communications link. Further, the second computer system receives the optical representation of the data from the first computer system via the free space communications link, determines the data based on the optical representation of the data, and transmits the data to one or more additional computer systems via a second communications network.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: February 27, 2024
    Assignee: Saudi Arabian Oil Company
    Inventor: Soloman M. Almadi
  • Patent number: 11909479
    Abstract: A method for shaping a mmWave wireless channel in a wireless network is presented. The method includes enabling communication between a multi-antenna transmitter and a multi-antenna receiver, positioning a reconfigurable intelligent surface (RIS) in a vicinity of the multi-antenna transmitter and the multi-antenna receiver, constructing the RIS as a uniform planar array (UPA) structure forming a multi-beamforming framework, a surface of the UPA defining an array of discrete elements arranged in a grid pattern, wherein parameters of the discrete elements of the UPA are controllable to achieve multiple disjoint beams covering different solid angles, and enabling the plurality of users of the plurality of mobile devices positioned in blind spots of a coverage map to communicate with the multi-antenna transmitter by employing the MS to generate sharp and effective beams having almost uniform gain in a desired angular coverage interval (ACI).
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: February 20, 2024
    Assignee: NEC Corporation
    Inventors: Mohammad Khojastepour, Nariman Torkzaban
  • Patent number: 11901945
    Abstract: An optical wireless communication (OWC) transceiver apparatus includes at least one light transmitter configured to transmit light of a first wavelength or first range of wavelengths, driver circuitry configured to receive a data signal and to process the data signal to produce a driving signal to drive the at least one light transmitter such that the at least one light transmitter produces a modulated optical signal representative of said data signal, at least one photodetector configured to receive light of a second wavelength or second range of wavelengths and to produce a detection signal in response to the received light, receiver circuitry configured to receive and process the detection signal to produce a receiver signal, and demodulation circuitry configured to perform a decoding and/or demodulation process in accordance with an OWC protocol thereby to extract data from the receiver signal.
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: February 13, 2024
    Assignee: pureLiFi Limited
    Inventors: Istvan Phillipe Bernard Csajaghy, Stephan Berner
  • Patent number: 11902719
    Abstract: An optical routing device that includes a mounting component which includes a rechargeable battery and a processor that communicates over-the-air with a master communication device or one or more service communication devices via RF supervisory links. The processor receives an instruction via the RF supervisory links to control a movement of the mounting component along with the optical routing component such that an angle or a direction of deflection of laser beams from an optical routing component of optical routing device is changed. The optical routing component includes two distinct laser beam handling regions configured to handle plurality of laser beams concurrently in which first laser beam in first wavelength is deflected via first region for downstream data communication in downstream path and second laser beam in second wavelength is deflected via second region for upstream data communication in upstream path for free-space optical communication independent of optical fibers.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: February 13, 2024
    Assignee: WIRELESS PHOTONICS LLC
    Inventors: Ahmadreza Rofougaran, Bahram Jalali, Mehdi Hatamian, Arman Rofougaran, Milan Rofougaran
  • Patent number: 11888533
    Abstract: System, method, and instrumentalities are described herein for transmitting information optically. The optical source may be configured to generate a beam. The beam may include a series of light pulses. The beam of light may be modulated. A modulator may be configured to modulate the series of light pulses in response to a data transmission signal, thereby encoding transmission data into the series of light pulses. The modulated beam of light may be received and both amplified and filtered. The filtered beam of light may be transmitted from to a detector having a photoreceiver. The photoreceiver may be configured to extract the transmission data from the filtered beam of light.
    Type: Grant
    Filed: September 29, 2023
    Date of Patent: January 30, 2024
    Assignee: Attochron, LLC
    Inventors: Thomas M. Chaffee, Wayne H. Knox, Alexander B. LeBon, Brian M. Gregory, Taz M. Colangelo
  • Patent number: 11889428
    Abstract: A method can include an integrated circuit device, determining if first communication circuits are operating in a first mode that wirelessly receives data at a first rate or a second mode that wirelessly receives data at a second rate that is lower than the first rate. If the first communication circuits are operating in the second mode, transmitting signals with the second communication circuits at a first power level, and if operating in the first mode, transmitting signals with the second communication circuits at a second power level that is lower than the first power level. In the first mode, X symbols per data bit are received and in the second mode, Y symbols per data bit are received, where X<Y. Corresponding devices and methods are also disclosed.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: January 30, 2024
    Assignee: Cypress Semiconductor Corporation
    Inventor: Raghunatha Kondareddy
  • Patent number: 11888516
    Abstract: Disclosed is a method for transmitting a signal by a transmission terminal in optical wireless communication. The method may comprise: applying a phase pattern to the wavefront of an optical signal; and transmitting the optical signal. Further, the phase pattern may be determined on the basis of the optical phase conversion characteristics of a phase mask provided in the transmission terminal.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: January 30, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Hojae Lee, Sangrim Lee, Byounghoon Kim
  • Patent number: 11888519
    Abstract: Provided herein are various enhanced systems, apparatuses, and techniques for optical communication among a constellation of satellites. One example includes establishing an initial cross-connect configuration comprising optical communication links among a constellation of satellites. In the initial cross-connect configuration, the satellites can optically communicate with both adjacently positioned and non-adjacently positioned satellites in the constellation. The satellites obtain angular states of the optical communication links resultant from orbital motion of the satellites. When angular states of a portion of the optical communication links reach an exclusion range, the satellites establish a subsequent cross-connect configuration to avoid optically communicating within the exclusion range.
    Type: Grant
    Filed: April 1, 2022
    Date of Patent: January 30, 2024
    Assignee: Lockheed Martin Corporation
    Inventors: Matthew Henry Rosenbrock, Neil Evan Goodzeit, Harald J. Weigl, Joseph F. Eder
  • Patent number: 11881892
    Abstract: An optical wireless communication device includes a processing component which is configured to produce transmitted digital signals during transmission periods; a light source which is configured to produce transmitted light signals from transmitted analog signals; a shutdown circuit which is configured to selectively activate or deactivate the light source; the processing component including a binary output to which it applies a binary control signal which is in a first state during the transmission periods and in a second state outside the transmission periods, the shutdown circuit being configured to activate the light source when the binary control signal is in the first state and to deactivate the light source when the binary control signal is in the second state.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 23, 2024
    Assignee: OLEDCOMM
    Inventors: Carlos Dominguez-Gonzalez, Clément Lartigue, Bastien Bechadergue, Benjamin Azoulay
  • Patent number: 11870495
    Abstract: A smart light source configured for visible light communication. The light source includes a controller comprising a modem configured to receive a data signal and generate a driving current and a modulation signal based on the data signal. Additionally, the light source includes a light emitter configured as a pump-light device to receive the driving current for producing a directional electromagnetic radiation with a first peak wavelength in the ultra-violet or blue wavelength regime modulated to carry the data signal using the modulation signal. Further, the light source includes a pathway configured to direct the directional electromagnetic radiation and a wavelength converter optically coupled to the pathway to receive the directional electromagnetic radiation and to output a white-color spectrum. Furthermore, the light source includes a beam shaper configured to direct the white-color spectrum for illuminating a target of interest and transmitting the data signal.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: January 9, 2024
    Assignee: KYOCERA SLD Laser, Inc.
    Inventors: Melvin McLaurin, James W. Raring, Paul Rudy, Vlad Novotny
  • Patent number: 11861813
    Abstract: A method for correcting a distorted image includes: acquiring a first coordinate of each pixel in a distorted image to be corrected; determining internal parameters for shooting the distorted image; acquiring a second coordinate corresponding to the first coordinate based on a corresponding relationship between the internal parameters and image distortion degrees, in which the second coordinate is an undistorted coordinate; acquiring a distance between the first coordinate and a coordinate of a center point of the distorted image, and determining a smoothing processing coefficient corresponding to the distance based on a smoothing processing function, in which the smoothing processing function is configured to indicate a proportional relationship between the distance and the smoothing processing coefficient; and acquiring a distortion correction image by performing smoothing correction on each first coordinate based on the smoothing processing coefficient and the second coordinate.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: January 2, 2024
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jian Kang
  • Patent number: 11842664
    Abstract: The present disclosure relates to an apparatus for outputting optically-input texts and a method controlling thereof. The apparatus includes: a light source array, including a plurality of light-emitting diodes disposed in an array; a driver, connected to all the light-emitting diodes in the light array, and configured to detect whether each of the light-emitting diodes has detected a drive optical signal from the outside, and drives the corresponding light-emitting diode to be turned on in response to detecting that the drive optical signal has been detected from the outside; a processor, connected to the light source array and the driver, and configured to recognize a target pattern formed by all the light-emitting diodes that have been turned on; and a controller, including a display screen, and configured to determine a text matching the target pattern as an output text, and displays the output text on the display screen.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: December 12, 2023
    Assignee: Suzhou Liangxin Optoelectric Technology Co., Ltd.
    Inventors: Yongjin Wang, Kang Fu
  • Patent number: 11825304
    Abstract: The present disclosure provides intelligent lighting control systems. The lighting control systems include a switch control circuit including a processor configured to cause a transmitter communicably coupled to the processor to initiate direct wireless communication with a mobile electronic device via a wireless protocol, the mobile electronic device operating a mobile application and communicably coupled to a remote server system via a dual factor authentication. The processor is configured to broadcast a device pin to the mobile electronic device via the wireless protocol, wherein the device pin comprises one or more of a serial number, a UUID and an actuator state. The processor is configured to obtain Wi-Fi credentials from the application via an encrypted exchange with the mobile electronic device. The processor is configured to initiate an authentication sequence with the remote server system using the Wi-Fi credentials and the device pin.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: November 21, 2023
    Assignee: Savant Systems, Inc.
    Inventors: Casey Scott Marshall, David Creighton Mott
  • Patent number: 11824588
    Abstract: System, method, and instrumentalities are described herein for transmitting information optically. The optical source may be configured to generate a beam. The beam may include a series of light pulses. The beam of light may be modulated. A modulator may be configured to modulate the series of light pulses in response to a data transmission signal, thereby encoding transmission data into the series of light pulses. The modulated beam of light may be received and both amplified and filtered. The filtered beam of light may be transmitted from to a detector having a photoreceiver. The photoreceiver may be configured to extract the transmission data from the filtered beam of light.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: November 21, 2023
    Assignee: Attochron, LLC
    Inventors: Thomas M. Chaffee, Wayne H. Knox, Alexander B. LeBon, Brian M. Gregory, Taz M. Colangelo
  • Patent number: 11817902
    Abstract: An orientation direction control device includes: an orientation direction control information acquisition unit to acquire orientation direction control information for controlling an orientation direction in which a first optical communication terminal as a first transmission/reception device transmits and receives light; and a capture and tracking control unit as an orientation direction control unit to control an orientation direction in which a second optical communication terminal as a second transmission/reception device transmits and receives the light or a radio wave on the basis of the orientation direction control information acquired by the orientation direction control information acquisition unit.
    Type: Grant
    Filed: June 9, 2022
    Date of Patent: November 14, 2023
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yuta Takemoto, Toshiyuki Ando
  • Patent number: 11789191
    Abstract: A system includes an optical fiber assembly, a receiver and a telescope, the receiver being positioned at a receiving end of the optical fiber assembly, the telescope being positioned at a collecting end, the receiver being arranged to receive uplink modulated light signals collected by the telescope and travelling through the optical fiber assembly, the telescope comprising an optical concentrator having an inlet face and an outlet face with a surface area smaller than that of the inlet face, the telescope further including a gradient-index lens dispose d coaxially with respect to the optical concentrator so that an inlet face of the gradient-index lens extends opposite the outlet face of the optical concentrator, the collecting end of the optical fiber assembly opening out opposite an outlet face of the gradient-index lens.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: October 17, 2023
    Assignee: OLEDCOMM
    Inventors: Juan Camilo Valencia-Estrada, Jorge Garcia-Marquez, Alejandro Espinoza-Garcia
  • Patent number: 11784713
    Abstract: A two-beam steering device comprising two single-beam steering devices and a motorized, rotating base stage, wherein each single-beam steering device is able to steer an electromagnetic wave beam in a full field of regard, wherein the two single-beam steering devices are fixed on top of the rotating base stage. The two-beam steering device can point the two individual beams into any direction pair in the entire field of regard with full flexibility.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: October 10, 2023
    Assignee: SCIDATEK INC.
    Inventors: Tomoyuki Izuhara, Louay Eldada
  • Patent number: 11777602
    Abstract: An apparatus and method arbitrates bidirectional optical communication across optical link ends of independent controller area network buses. A mobile device has a battery management system and a first controller area network bus having a first optical link end, and a charging station has a second controller area network bus having a second optical link end. When the mobile device aligns with the charging station for charging, the optical links ends align to allow communication between the battery management system and the charging station regarding charging the battery. The arbiter apparatus is operationally interposed between the optical link ends and arbitrates the bidirectional communication by delaying a subsequent communication from one of the battery management system and the charging station until a dominant bit of a prior communication is released, thereby preventing the controller area network buses from transmitting simultaneously across the optical link ends.
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: October 3, 2023
    Assignee: Nidec Motor Corporation
    Inventors: Cosma Pabouctsidis, Christopher J. Schur
  • Patent number: 11750284
    Abstract: An optical wireless communication (OWC) device comprises: a receiver comprising: a dual-wavelength filter configured to filter light arriving at the receiver, wherein the dual-wavelength filter is configured to pass light of a first frequency and light of a second, different frequency, and wherein the dual-wavelength filter is configured to substantially block light of a third frequency between the first frequency and second frequency; and a photodetector configured to receive the filtered light and to sense modulated light of the first frequency and/or modulated light of the second frequency to produce at least one receiver signal; demodulation circuitry and a processing resource for performing a demodulation and processing with respect to the at least one receiver signal to obtain data encoded in the modulated light of the first frequency and/or data encoded in the modulated light of the second frequency; a transmitter comprising a light source configured to output modulated light of the third frequency; a
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: September 5, 2023
    Assignee: PURELIFI LIMITED
    Inventors: Luca Carraro, Istvan Philipe Bernard Csajaghy, Christopher Nigel Tate, Duncan John William Walker
  • Patent number: 11728888
    Abstract: Tracking control of a light beam is achieved at high speed and with good precision, without requiring preparation of an optical system that causes high signal loss when coupling a reception light beam with an optical fiber. A reception device for optical space communication comprises: fibers having a plurality of propagation modes with spatially different characteristics; an optical coupling system for coupling the reception light beam to the fibers; and a mode separator that separates the coupled light into a plurality of propagation modes, the adjustment axes of the optical coupling system for coupling the reception light beam to one end of the fibers being controlled on the basis of the total coupling strength to all of the modes, and the priority of control of the axes being adjusted on the basis of information about the coupling strength ratio for each mode.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 15, 2023
    Assignee: NEC CORPORATION
    Inventors: Manabu Arikawa, Toshiharu Ito
  • Patent number: 11722892
    Abstract: A visual light communication emitter for a vehicle, arranged to communicate a status of the vehicle, includes a first light emitter arranged to emit flash light which is modulated at a first target frequency in a dedicated non-visible spectrum, and a second light emitter arranged to emit flash light which is modulated at a second target frequency in the dedicated non-visible spectrum. A difference between the first target frequency and the second target frequency is predetermined, so as to authenticate the status of the vehicle.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: August 8, 2023
    Assignee: AISIN CORPORATION
    Inventors: Remy Bendahan, Sylvain Bougnoux, Yuta Nakano, Takeshi Fujita
  • Patent number: 11694055
    Abstract: The present disclosure provides an optical tag-based information apparatus interaction method and system. The method includes: using a terminal device to perform image acquisition on an optical tag at a relative fixed position to an information apparatus so as to determine a position and an attitude of the terminal device relative to the optical tag; determining, in conjunction with a predetermined position of each information apparatus relative to the optical tag, the position of the terminal device relative to each information apparatus; acquiring an imaging position of each information apparatus on a display screen of the terminal device, and displaying an interactive interface of each information apparatus at the imaging position thereof on the display screen, such that an interactive operation can be performed on each information apparatus.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: July 4, 2023
    Assignee: BEIJING WHYHOW INFORMATION TECHNOLOGY CO., LTD
    Inventors: Xuheng Niu, Jun Fang, Jiangliang Li
  • Patent number: 11689283
    Abstract: An example device may include an optical modulator configured to generate an optical beam encoding network data, an optical power amplifier configured to adjust a transmitted power of the optical beam, and a transmit beam angle mechanism configured to adjust a beam direction of the optical beam and to transmit the optical beam to a remote receiver over a free-space optical link. Example devices may include a controller configured to receive backchannel data from the remote receiver and modify a characteristic of the optical beam based on the backchannel data. Various other devices, systems, and methods are also disclosed.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: June 27, 2023
    Assignee: Meta Platforms, Inc.
    Inventors: Stephen Philip Efthyvoulos, Eric Douglas Miller, Chien-Chung Chen, Slaven Moro
  • Patent number: 11687307
    Abstract: The system comprises a first display mounted in a fixed position, a computer system coupled to the first display and a handheld computing device, wherein the first display is larger than the second display, the first display has a wider field of view than the second display, the first display establishes an optical link with the second display, the first display and the second display renders a virtual reality model of a scene with moving objects and asynchronous visual events. The handheld computing device is configured to scan machine-readable code embedded in asynchronous visual events, the result of scanning indicates location of the asynchronous visual events and transmits the location of the synchronous visual events to one or more remote computing devices using one or more wireless link, and in response to transmission of the location, modify the virtual reality model of the scene rendered on the first display.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: June 27, 2023
    Assignee: Cubic Corporation
    Inventors: Martyn Armstrong, Neale Smiles, Alastair Parkinson, Robert Michael Spriggs, Rod Tuckwell
  • Patent number: 11682133
    Abstract: A device that is capable of determining its relative position with regard to another device. The device accomplishes this by receiving and analyzing two sets of information emitted by the device whose unique identifier and relative position is to be determined. The first set of information received by the device includes a structured light pattern with a known geometric configuration reflected off a surface in view of both devices. The second set of information received by the device includes a digital communication signal that encodes the unique identifier of the emitting device. Both sets of information may be transmitted on a free space optical communication channel that can be non-directed and non-line of sight.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: June 20, 2023
    Assignee: JDRF ELECTROMAG ENGINEERING INC.
    Inventor: Roumanos Dableh