Determination Of Communication Parameter Patents (Class 398/25)
  • Patent number: 10693565
    Abstract: Methods and apparatuses are provided that compensate for the polarization dependent loss (PDL) of fiber-optic quantum channels. Compensation is accomplished by inserting a compensating PDL into another quantum channel carrying entangled photons that are entangled with photons in the first channel having losses that are to be compensated for. By selecting the optimum magnitude and orientation for the compensating PDL, compensation for the PDL in the first channel is maximized.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: June 23, 2020
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Brian T. Kirby, Daniel E. Jones, Michael Brodsky
  • Patent number: 10678002
    Abstract: Aspects and techniques of the present disclosure relate to a fiber optic communications network that includes a loop back connector in conjunction with one or more distribution devices daisy chained together to index optical fibers within the network. The network includes a central office that sends signals in one direction. The loop back connector can be mounted at the end of the chain to allow un-used live indexing optical fibers corresponding to active fiber positions to be looped back to feed signals to dead indexing optical fibers corresponding to inactive fiber positions. The dead indexing optical fibers can be optically connected to progressively dropped fibers or reverse ports in the indexed network.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 9, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Thomas Marcouiller, Erik J. Gronvall, Thomas A. Thigpen
  • Patent number: 10674382
    Abstract: Adaptation of a network is disclosed. A proposed adaptation, determined by a sub-network component of the network based on an intended effect to the sub-network, can be received by a network-level arbitration component. The network-level arbitration component can determine if the proposed adaptation satisfies a rule based on predicted results on the network from implementing the proposed adaptation. Where the rule is satisfied the adaptation can be implemented. A result of the implementation can be compared to the predicted results to determine if the network should be reverted to a pre-implementation state. In an aspect, the network-level arbitration component can be a core-network component. In an embodiment, the network-level arbitration component can be a virtualized component on a network provider server, a cloud server, etc.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: June 2, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Jesse Chan, David Kinsey
  • Patent number: 10666364
    Abstract: An optical-electrical interface device for coupling to an optical distribution network is provided which comprises: a housing, an optical fiber port for coupling to a single optical fiber, an optical network terminal unit connected to the optical fiber port, a power sourcing management unit configured to manage the power supply of the optical network, network terminal unit, a plurality of electrical ports and a plurality of electrical cables each connected to the power sourcing management unit and to one of the electrical ports. The electrical ports are accessible and/or arranged outside the housing, wherein the optical-electrical interface device is configured to reverse-feed electrical power, from external electrical module devices connected to the electrical ports, for operating the optical network terminal unit which is arranged inside the housing.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: May 26, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Roni Aharon Shurki, Martin Spreemann
  • Patent number: 10666359
    Abstract: A software-defined network multi-layer controller (SDN-MLC) may communicate with multiple layers of a telecommunication network. The SDN-MLC may have an optimization algorithm that helps manage, in near real-time, the multiple layers of the telecommunication network.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: May 26, 2020
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Gagan Choudhury, Kathleen Meier-Hellstern, Alvin Goddard, Narayan Padi, Simon Tse
  • Patent number: 10608746
    Abstract: A digital instruction is generated regarding one or more electrical-to-optical conversion impairments induced at the transmitter of an optical communication system. The digital instruction may be used by the transmitter to reduce the impairments. Alternatively, or additionally, the digital instruction may be used by the receiver of the optical communication system to compensate for the impairments.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: March 31, 2020
    Assignee: Ciena Corporation
    Inventors: Qunbi Zhuge, Kevin Farley, Kim B. Roberts, Maurice O'Sullivan
  • Patent number: 10602386
    Abstract: In a method for measuring a service transmission status of a user equipment provided in an embodiment of the present invention, a first service station transmits a first data packet for a user equipment; the first service station determines at least one second service station that transmits a second data packet for the user equipment; and the first service station instructs the at least one second service station to measure a service transmission status of the user equipment, where the first data packet and the second data packet are different data packets of a same service of the user equipment or data packets of different services. According to this method, a service transmission status of a user equipment can be measured in a multi-station transmission scenario.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: March 24, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bingzhao Li, Yanyan Chen, Xiaodong Yang
  • Patent number: 10594667
    Abstract: A method, system, and recording medium for communication comparison including encrypting a first communication and a second communication, determining a list of frequencies and intensities based on the first communication and the second communication, projecting light based on the list of frequencies and intensities of the first communication onto an object, reading the frequencies and intensities of the light based on the first communication from the object, and comparing the light read in the reading with the list of frequencies and intensities of the second communication to calculate a semantic overlap between the frequencies and intensities of the first communication and the second communication.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: March 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Nicholas Stephen Kersting
  • Patent number: 10461968
    Abstract: A jones matrix is obtained using coefficients of an equalizer; a parameter of the jones matrix is obtained; a coefficient of an X axis polarization state or a Y axis polarization state in the coefficients is adjusted using the parameter of the jones matrix when the coefficients have singularity characteristics, or energy corresponding to each coefficient of X or Y axis polarization state under each order of a filter in the equalizer is determined using two coefficients of an X or Y axis polarization state in the equalizer coefficients; and a central position of a coefficient tap of X or Y axis polarization state of the equalizer is adjusted using the energy corresponding to each coefficient of X or Y axis polarization state under each order of the filter when the coefficient tap of the X axis or Y axis polarization state of the equalizer deviates from the central position.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: October 29, 2019
    Assignee: Sanechips Technology Co., Ltd.
    Inventors: Yaling Zhao, Junfeng Peng, Huihui Wan
  • Patent number: 10438404
    Abstract: Embodiments herein describe an AR system which communicates with light sources in a real world environment to simulate the light sources having an effect on AR content being displayed in the AR system. In one embodiment, the AR system determines the light characteristics of the light sources such as their color, specularity, beam spread, brightness, or illumination pattern. These light characteristics can contribute to the ambient light in the real world environment which affects the appearance of the physical objects in the environment. The AR system can adjust how the AR content is displayed to simulate the AR content being affected in a similar manner by the light sources. As such, the AR content appears to be more like a physical object (rather than a virtual object) thereby providing the user with a more immersive experience.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: October 8, 2019
    Assignee: Disney Enterprises, Inc.
    Inventor: Robert Scott Trowbridge
  • Patent number: 10374711
    Abstract: A communications system, a method for managing a communications system, and a controller, where the communications system includes a front-end device and a remote device, where the remote device includes at least one coaxial media converter (CMC), where each CMC includes a data over cable service interface specification (DOCSIS) processor supporting a broadband access service and an edge quadrature amplitude modulation (EQAM) processor supporting a video service, and the at least one CMC and the front-end device are connected using a digital fiber, and the front-end device includes a controller, where the controller is configured to manage the at least one CMC.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: August 6, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bo Ke, Guangsheng Wu
  • Patent number: 10348369
    Abstract: A transmission control device includes an acquiring unit that acquires propagation delay time for each propagation path between a plurality of terminal devices and a plurality of transmitter stations; a selector that selects, based on the propagation delay time acquired by the acquiring unit, combinations of terminal devices having similar propagation delay differences from the plurality of the transmitter stations; and a controller that controls transmission timing of the plurality of the transmitter stations that transmit signals to the combinations of the terminal devices selected by the selector.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: July 9, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Takashi Dateki, Takashi Seyama, Takaharu Kobayashi
  • Patent number: 10345673
    Abstract: Embodiments of this disclosure provide a bias control apparatus and method of a modulator of an optical transmitter and an optical transmitter. By obtaining respective output power signals of a first Mach-Zehnder modulator and a second Mach-Zehnder modulator constituting the modulator of the optical transmitter, information on a phase bias may be extracted according to the two output power signals and an overall output power signal of the modulator of the optical transmitter, so as to control the phase bias by using the information, thereby efficiently improving a sensitivity of the control of the bias, and being applicable to various types of modulation formats.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: July 9, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Yangyang Fan, Zhenning Tao
  • Patent number: 10341018
    Abstract: Methods, systems, and devices are described for commissioning light fixtures. One method may include receiving, at a mobile device, an encoded light signal from a light fixture in a plurality of light fixtures. The encoded light signal may be decoded to obtain an identifier associated with the light fixture, and a correspondence between the identifier and a plurality of locations of the plurality of light fixtures may be determined.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: July 2, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Meghna Agrawal, Suresh Kumar Bitra
  • Patent number: 10326532
    Abstract: A backhaul network comprises at least two of a distribution point, a splitter, an amplifier, a coupler and an optical network for use within the backhaul network. Predetermined locations are selected for the at least two of the distribution point, the splitter, the amplifier, the coupler and the optical network within the backhaul network based upon a constrained optimization process that reduces cost and improves backhaul network reliability. Each of the at least two of the distribution point, the splitter, the amplifier, the coupler and the optical network are located at one of the predetermined locations from the constrained optimization process.
    Type: Grant
    Filed: July 20, 2018
    Date of Patent: June 18, 2019
    Assignee: NxGen Partners IP, LLC
    Inventor: Solyman Ashrafi
  • Patent number: 10326531
    Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: June 18, 2019
    Assignee: FINISAR CORPORATION
    Inventors: Andrew Zocher, Theron Jones, Lucy Hosking
  • Patent number: 10313533
    Abstract: A communications connection comprises intermediate connection points (6,11) connected by a non-conducting communications link (20), with conversion equipment in one or both intermediate points for converting communications between electrical and non-electrical carriers, and each being arranged to be powered from the respective ends (1, 12). If a metallic path (18) is present between the two intermediate points, the system can be arranged to use this for a limited connection service in the event of loss of electrical power to one or both of the intermediate points (6,11).
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: June 4, 2019
    Assignee: BRITISH TELECOMMUNICATIONS public limited company
    Inventors: Nicholas Hector Edwards, Ian Robert Cooper
  • Patent number: 10270526
    Abstract: A terminal status monitoring apparatus connected to a terminal at an optical subscriber side in an optical network is provided. A signal transferring unit transfers a downlink optical signal to the terminal and receives, as a reflected optical signal, the downlink optical signal which is reflected at the terminal. A signal receiving unit measures an intensity of the reflected optical signal. A signal processing unit determines a connection status of a terminal device at the terminal by comparing an intensity of the downlink optical signal with the intensity of the reflected optical signal. A signal output unit outputs the connection status.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: April 23, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung-Hee Son, Geun Yong Kim, Jae In Kim, Hee Do Kim, Moon Kyun Oh, Hark Yoo, Dongsoo Lee
  • Patent number: 10271226
    Abstract: Adaptation of a network is disclosed. A proposed adaptation, determined by a sub-network component of the network based on an intended effect to the sub-network, can be received by a network-level arbitration component. The network-level arbitration component can determine if the proposed adaptation satisfies a rule based on predicted results on the network from implementing the proposed adaptation. Where the rule is satisfied the adaptation can be implemented. A result of the implementation can be compared to the predicted results to determine if the network should be reverted to a pre-implementation state. In an aspect, the network-level arbitration component can be a core-network component. In an embodiment, the network-level arbitration component can be a virtualized component on a network provider server, a cloud server, etc.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 23, 2019
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Jesse Chan, David Kinsey
  • Patent number: 10263697
    Abstract: The present disclosure discloses a method and an apparatus for monitoring chromatic dispersion in an optical communications network. The method includes: performing coherent mixing of a to-be-monitored signal with a first optical signal and a second optical signal to obtain two analog electrical signals, where center frequencies of the first optical signal and the second optical signal are located on two sides of a center frequency of the to-be-monitored signal, and a difference between the center frequencies of these two optical signals equals a Baud rate; converting the two analog electrical signals into two corresponding first time domain power signals; determining a value of a time delay between these two time domain power signals; and obtaining, according to a correspondence between the value of the time delay and the chromatic dispersion, the fiber chromatic dispersion generated in a process of transmitting the to-be-monitored signal.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: April 16, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhaohui Li, Yuli Chen, Dawei Wang
  • Patent number: 10256906
    Abstract: Visible-light communication (VLC) is an optical wireless communication technique that uses light emitting diodes (LEDs) or other optical sources to transmit information to a user equipment (UE) device. An optically-based location determination approach, such as using VLC infrastructure, can meet a desire for location-based services where use of VLC can provide a solution to an indoor localization or navigation problem. A fingerprinting approach can include use of an optical received signal strength (RSS) or other information (e.g., an image of a scene) to generate a spatial fingerprint map of an area. A later-received RSS on the UE device and the prior-generated fingerprint map representative of RSS can be received, and a fingerprint map and RSS observations can be provided as inputs to a Bayesian filter, such as an Extended Kalman Filter (EKF) or a Particle Filter, to provide an estimated position for the UE device.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: April 9, 2019
    Assignee: University of Virginia Patent Foundation
    Inventors: Maite Brandt-Pearce, Zafer Vatansever
  • Patent number: 10250324
    Abstract: An optical trunk switch supporting an Optical Time-Domain Reflectometer (OTDR) includes a transmit switch configured to provide an input signal to one or more of a primary fiber path and a standby fiber path; a receive switch configured to provide an output signal from one of the primary fiber path and the standby fiber path; and an OTDR connection configured to provide one or more OTDR signals to monitor an inactive path of the primary fiber path and the standby fiber.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: April 2, 2019
    Assignee: Ciena Corporation
    Inventors: Paul Chedore, Jean-Luc Archambault
  • Patent number: 10218447
    Abstract: When a frequency deviation compensation amount is compensated for by use of frequency shift, a phase offset occurs between adjacent input blocks included in a plurality of input blocks as divided, with the result that an error occurs in a reconstructed bit sequence. A frequency deviation compensation system of the invention is characterized by comprising: a frequency deviation compensation means for compensating for a frequency deviation occurring in a signal by use of frequency shift; and a phase offset compensation means for compensating for a phase offset occurring, in the signal, due to the frequency shift.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: February 26, 2019
    Assignee: NEC CORPORATION
    Inventors: Daisaku Ogasahara, Junichi Abe
  • Patent number: 10203553
    Abstract: Disclosed is a backlight module which includes a plurality of light-emitting devices arranged in an array of multiple rows and multiple columns. Each row of light-emitting devices include a plurality of first light-emitting devices for emitting red light, a plurality of second light-emitting devices for emitting green light and a plurality of third light-emitting devices for emitting blue light. The first light-emitting device, the second light-emitting devices and the third light-emitting devices in each row of light-emitting devices are driven to sequentially emit light based on respective data signals in a light-emitting phase. Further disclosed are a method of driving the backlight module and a display device.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Shengji Yang, Xiaochuan Chen, Panhua Wang, Xue Dong, Hailin Xue, Haisheng Wang, Weijie Zhao
  • Patent number: 10171309
    Abstract: A topology service may include a topology database and topology service interface used by clients to query the topology database. The topology database may describe a topology of resources of an infrastructure that may include racks of resources such as network, compute and storage resources. The topology database may be populated using discovery information returned as a result of issuing discovery requests to switches. The discovery information may identify connectivity between switches and other resources. The discovery information may be processed to determine assigned switch roles and additional derived information such as regarding instances of topological entities in the infrastructure. The derived information may identify instances of racks, rows and data centers in the infrastructure. The topology database may identify particular resources included in the different racks, rows, and data centers as well as connectivity between resources and communication capabilities of resource interfaces.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 1, 2019
    Assignee: EMC IP Holding Company LLC
    Inventors: Erik P. Smith, Alan Rajapa, Jean E. Pierre, Massarrah Tannous, Mark Lippitt
  • Patent number: 10153834
    Abstract: An optical fiber replacement method in an optical network is provided. The optical fiber replacement method in the optical network is based on blocking due to an optical signal noise ratio limitation, in which standard single-mode optical fibers in an existing optical network are gradually replaced with ultra-low loss optical fibers. With the optical replacement method in the optical network, performance of the optical network can be improved to the greatest extent while ensuring low replacement cost in a process of gradually replacing the optical fibers.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: December 11, 2018
    Assignee: SOOCHOW UNIVERSITY
    Inventors: Gangxiang Shen, Yanxin Guan
  • Patent number: 10142031
    Abstract: A technique is provided for a receiver of an optical signal. The technique includes an apparatus that is configured to input digitized samples of the optical signal at a first sampling rate. The apparatus is further configured to filter the digitized samples based on a plurality of filter coefficients to obtain filtered samples of the optical signal at a second sampling rate. The second sampling rate is different from the first sampling rate. The apparatus is further configured to output the filtered samples of the optical signal at the second sampling rate.
    Type: Grant
    Filed: April 8, 2015
    Date of Patent: November 27, 2018
    Assignee: ALCATEL LUCENT
    Inventors: Gabriel Charlet, Massimiliano Salsi
  • Patent number: 10127602
    Abstract: A system, computer-readable storage medium storing at least one program, and computer-implemented method for a transient local commerce search service is provided. Location data identifying a temporary geographic location of a merchant having a particular product available for sale is received. Temporal data indicating a specified time when the particular product is available at the temporary location of the merchant is also received. It is then determined that the particular product is available within a specified location and at the specified period of time. Display data to display at least one merchant providing the particular product within the geographic location and at the specified period of time is then provided.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: November 13, 2018
    Assignee: eBay Inc.
    Inventor: Kevin Patrick Fries
  • Patent number: 10110509
    Abstract: A network switch comprises a plurality of optical physical transport layer resources and a control plane management engine capable of receiving, via a request over a network interface, at least one control plane provisioning policy that maps at least one upper layer resource to at least some of the optical physical transport layer resources. The control plane management engine provisions at least some of the optical physical transport layer resources for use by at least one virtual control plane, which operates according to rules of the control plane provisioning policy. The control plane management engine is configured to manage network traffic among the at least some optical physical transport layer resources and external networking nodes according to the at least one virtual control plane.
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: October 23, 2018
    Assignee: Nant Holdings IP, LLC
    Inventor: Thomas Wittenschlaeger
  • Patent number: 10069572
    Abstract: Methods and systems are described for sampling an LCom message and accurately decoding the entire LCom message using a light receiver (e.g., digital camera) of a typical mobile computing device, such as a smartphone, tablet, or other mobile computing device. In one embodiment, a curvature method is disclosed to determine LCom signal bit values from a curvature value of a running average calculation of light sensor data. In another embodiment, a signal reconstruction method is disclosed to determine LCom signal bit values from a comparison of modeled data buffers to light sensor data.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: September 4, 2018
    Assignee: OSRAM SYLVANIA Inc.
    Inventors: Christian Breuer, Barry Stout, Anant Aggarwal
  • Patent number: 10069571
    Abstract: Methods of operating an optical communication system in coherent optical transmissions for metro applications. Relative to conventional solutions, the optical communication system can be implemented with reduced cost and can operate with reduced power consumption, while maintaining high data rate performance (e.g., 100 G). Furthermore, a programmable transceiver enables compatibility with a range of different types of optical networks having varying performance and power tradeoffs. In one embodiment, the optical communication system uses 100 Gb/s dual-polarization 16-point quadrature amplitude modulation (DP-16QAM) with non-linear pre-compensation of Indium Phosphide (InP) optics for low power consumption.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: September 4, 2018
    Assignee: INPHI CORPORATION
    Inventors: Paul Voois, Diego Ernesto Crivelli, Ramiro Rogelio Lopez, Jorge Manuel Finochietto, Oscar Ernesto Agazzi, Nariman Yousefi, Norman L. Swenson
  • Patent number: 10050740
    Abstract: A single-wavelength light path is selected between a source access node and a destination access node of a wavelength-division multiplexed optical network, including selecting an illuminated wavelength of the light path and selecting a start time and duration for a data transfer that would not interfere with other data transfers. If no start time/wavelength combination is available with duration sufficient to transport the data, an additional wavelength is automatically selected, based on modeling, that would not impair traffic being carried by other wavelengths in the network, and without a time-consuming manual process of the prior art. The scheduling process may include selecting a set of optical fibers, a wavelength, a start time and an end time to transport proposed traffic. A novel scheduler avoids checking every possible start time, thereby saving significant processing time. The scheduler schedules single-wavelength light paths, rather than relying on complex wavelength shifting schemes.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 14, 2018
    Assignee: Massachusetts Institute of Technology
    Inventors: Lei Zhang, Vincent W. S. Chan
  • Patent number: 10027437
    Abstract: A mode-multiplexing control method, and a transmission apparatus and reception apparatus for the same, the mode-multiplexing control method performed by the transmission apparatus, the mode-multiplexing control method including measuring data traffic, determining a transmission mode count to be used based on the measured data traffic, and transmitting data to a reception apparatus through an optical line in transmission modes corresponding to the determined transmission mode count.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: July 17, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Rok Moon, Changyo Han
  • Patent number: 10014947
    Abstract: A digital instruction is generated regarding one or more electrical-to-optical conversion impairments induced at the transmitter of an optical communication system. The digital instruction may be used by the transmitter to reduce the impairments. Alternatively, or additionally, the digital instruction may be used by the receiver of the optical communication system to compensate for the impairments.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: July 3, 2018
    Assignee: Ciena Corporation
    Inventors: Qunbi Zhuge, Kevin Farley, Kim Roberts, Maurice O'Sullivan
  • Patent number: 9986317
    Abstract: Systems and methods for modeling non-visible optical sources in a spectrum controller for control thereof include receiving channel routing information and signal characteristics for the non-visible channels separately from visible channels, wherein the visible channels are formed by optical transceivers communicatively coupled to the spectrum controller and the non-visible channels are formed by optical transceivers without communication to the spectrum controller; utilizing a combination of the channel routing information and signal characteristics for both the visible channels and the non-visible channels as input to the spectrum controller; performing control of optical spectrum based on the input; and providing output adjustments based on the control.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: May 29, 2018
    Assignee: Ciena Corporation
    Inventors: Choudhury A. Al Sayeed, Dave C. Bownass, Edward Chen
  • Patent number: 9983371
    Abstract: An apparatus and method of assembly are described that provide improved mechanisms for cooling an optoelectronic transducer in a fiber optic system. The apparatus includes a thermoelectric cooler (TEC) secured to the optoelectronic transducer for removing heat from the optoelectronic transducer in response to instructions from a TEC driver, as well as a microcontroller electrically connected to the TEC driver for monitoring temperature and communicating with the TEC driver to selectively activate and deactivate the TEC at least partially based on the monitored temperature and/or other measured/detected data to effect a more efficient cooling mechanism for optoelectronic transducers, such as VCSELs. In addition, the user may be able to configure the system to maintain the optoelectronic transducer within a user-defined range of temperatures.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: May 29, 2018
    Assignee: Mellanox Technologies, Ltd.
    Inventors: Morees Ghandour, Elad Mentovich, Itshak Kalifa, Sylvie Rockman, Dalit Kimhi, Alon Webman
  • Patent number: 9979468
    Abstract: It is difficult in an optical network to achieve fault recovery in case of multiple failures without decreasing the usage efficiency of the optical network; therefore, an optical communication system according to an exemplary aspect of the present invention includes an optical network management device including an optical path setting means for setting, to a physical route differing from each other, a backup path corresponding to each of a plurality of active paths on an identical physical route, and a failure-case optical path setting means for setting a failure-case backup path with a compressed band of the backup path, to a physical route without a failure in a case where failures arising on more than one physical route among the physical routes; and an optical node device including an optical transceiver means for transmitting and receiving optical signals using failure-case backup path information resulting from setting by the failure-case optical path setting means.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: May 22, 2018
    Assignee: NEC Corporation
    Inventors: Shinsuke Fujisawa, Hitoshi Takeshita, Tomoyuki Hino, Akio Tajima
  • Patent number: 9867261
    Abstract: A light emitting device with a dimming visible light communication function and an interaction device applying for visible light are provided. The light emitting device with the dimming visible light communication function comprises a luminance adjusting unit, a control circuit and a light emitting device. The luminance adjusting unit outputs a luminance adjusting signal according to luminance adjusted by a user. The control circuit coupled to the luminance adjusting unit outputs a pulse width modulation (PWM) signal according to the luminance adjusting signal. The light emitting device outputs visible light, receives the PWM signal, and is turned on or off according to states of a logic high voltage and a logic low voltage of the PWM signal. In an idle mode, the PWM signal operates at a first frequency. In a light communication mode, an operating frequency of the PWM signal is changed according to transmitted data.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: January 9, 2018
    Assignee: Generalplus Technology Inc.
    Inventors: Li Sheng Lo, Hsien-Yao Li
  • Patent number: 9859977
    Abstract: A method, apparatus and system estimating channel power, and monitoring a frequency spectrum characteristic. A method for estimating channel power includes extracting frequency spectrum information from a received signal, so as to obtain a frequency spectrum of the received signal, estimating power of a central channel in the frequency spectra according to a power value of a flat area of the central channel, and estimating power of a neighboring channel in the frequency spectra according to a power value of a flat area of the neighboring channel. With the embodiments of the present disclosure, the power of the central channel and the power of the neighboring channel may be estimated by using only frequency spectrum information obtained by a single optical receiver, so as to quantitatively evaluate influence of a power imbalance effect, thereby ensuring precision of the power estimation, and reducing effects of nonideal factors on the estimated values.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: January 2, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Ying Zhao, Liang Dou, Zhenning Tao
  • Patent number: 9853730
    Abstract: A Light Emitting Diode (LED) based illumination device authenticates a mobile electronics device on a lighting communications network. The mobile electronic device may request a communications link on the lighting communications network and detect modulated illumination light emitted from the LED based illumination device. The modulated light may include an optical code. The mobile electronic device may determine the optical code from the modulated illumination light and communicate an indication of the optical code to the LED based illumination device. The LED based illumination device may determine if the indication of the optical code is correct and provide, in response, a communication link to the mobile electronics device on the lighting communications network.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: December 26, 2017
    Assignee: Xicato, Inc.
    Inventors: Martin Emil Mueller, Barry Mark Loveridge, Jeffrey P. Hushley, Gerard Harbers
  • Patent number: 9847833
    Abstract: Disclosed are methods for monitoring and measuring Optical Signal-To-Noise Ratios in optical communications systems. One exemplary method involves intentionally inserting zero power symbols into an optical signal stream such that those periods of time in which only zero power symbols are transmitted may be detected and compared with periods of time in which signals modulated with information including both signal and noise are detected such that the OSNR may be determined.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: December 19, 2017
    Assignee: Acacia Communications, Inc.
    Inventors: Christian Rasmussen, Mehmet Aydinlik
  • Patent number: 9838131
    Abstract: An optical communication system provides coherent optical transmission for metro applications. Relative to conventional solutions, the optical communication system can be implemented with reduced cost and can operate with reduced power consumption, while maintaining high data rate performance (e.g., 100 G). Furthermore, a programmable transceiver enables compatibility with a range of different types of optical networks having varying performance and power tradeoffs. In one embodiment, the optical communication system uses 100 Gb/s dual-polarization 16-point quadrature amplitude modulation (DP-16QAM) with non-linear pre-compensation of Indium Phosphide (InP) optics for low power consumption.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: December 5, 2017
    Assignee: INPHI CORPORATION
    Inventors: Paul Voois, Diego Ernesto Crivelli, Ramiro Rogelio Lopez, Jorge Manuel Finochietto, Oscar Ernesto Agazzi, Nariman Yousefi, Norman L. Swenson
  • Patent number: 9819411
    Abstract: Optical signal to noise ratio within a band of interest (in-band OSNR) is calculated by using a reference signal for noise estimation. In-band noise at a node along the optical communication path is estimated by subtracting the reference signal contribution from the received in-band signal energy. Contribution from the reference signal is calculated using an effective transfer function of the optical communication path using either a direct method in which measurements are made a priori on an equivalent optical system or an indirect method in which the effective transfer function is calculated using computerized simulations. The selection of which method to use may be based on the desired resolution bandwidth for the estimation of transfer function.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: November 14, 2017
    Assignee: ZTE Corporation
    Inventors: Hung-Chang Chien, Zhensheng Jia, Jianjun Yu
  • Patent number: 9735915
    Abstract: [Objective] To make it possible to effectively relay remaining signals even when any input failure occurs on a propagation path.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 15, 2017
    Assignee: NEC Corporation
    Inventor: Yoshirou Satou
  • Patent number: 9713233
    Abstract: A method for using an external lamp onboard a vehicle is provided. The method receives, at a transceiver positioned inside a sealed casing of the external lamp, a wireless communication signal and a wireless power signal; and operates the external lamp using the wireless communication signal and the wireless power signal.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: July 18, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gregory M. Castillo, Moshe Laifenfeld
  • Patent number: 9705637
    Abstract: Techniques for guard band utilization for wireless data communication are described. In at least some embodiments, guard bands can be leveraged to transmit wireless broadband data and/or other forms of wireless data. According to one or more embodiments, signal activity in a wireless channel that is adjacent to a guard band is monitored, e.g., while the guard band is being utilized for wireless data communication. In at least some implementations, if the signal activity exceeds a signal activity threshold, usage of the guard band channel can be adjusted to mitigate interference with signal activity in an adjacent channel.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: July 11, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Amer A. Hassan, Paul W. Garnett, Paul William Alexander Mitchell
  • Patent number: 9692647
    Abstract: A method of registering or de-registering, by an optical line terminal (OLT), one or more optical network units (ONUs) in an optical communications network. The method may include: setting one or more sub-channels for registration or de-registration among two or more sub-channels, and a size of a contention window in the one or more sub-channels; transmitting, to one or more ONUs, a registration information message including information of the one or more set sub-channels and the size of the contention window; receiving, through one of the set sub-channels, a registration or de-registration request message from the one or more ONUs, which receive the registration information message; and registering and de-registering the one or more ONUs.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: June 27, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jun Seong Bang, Kyeong Hwan Doo
  • Patent number: 9688691
    Abstract: The present invention concerns the compounds of formula the N-oxide forms, the pharmaceutically acceptable addition salts and the stereochemically isomeric forms thereof, wherein Z represents NH; Y represents —C3-9alkyl-, —C1-5alkyl-NR13—C1-5alkyl-, —C1-5alkyl-NR14—CO—C1-5alkyl-, —C1-2alkyl-NR21—H2—CO—NH—C1-3alkyl- or —C1-2alkyl-NR23—CO—CR16R17—NH—; X1 represents O or —O—C1-2alkyl-; X2 represents a direct bond, C1-2alkyl, —CO—C1-2alkyl or NR12—C1-2alkyl; R1 represents hydrogen or halo; R2 represents halo, acetylene or Het1 R3 represents hydrogen or cyano; R4 represents Ar4—C1-4alkyloxy-, C1-4alkyloxy- or C1-4alkyloxy substituted with one or where possible two or more substituents selected from Het2, NR7R8, hydroxy and C1-4alkyloxy—C1-4alkyloxy-; R7 represents hydrogen or C1-4alkyl; R8 represents C1-4alkyl substituted with NR25R26 or C1-4alkylsulfonyl; R12 represents hydrogen or C1-4alkyl-; R13 represents Ar6-sulfonyl or C1-6alkyloxycarbonyl optionally substituted with phenyl; R16 and R17 represents hydr
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: June 27, 2017
    Assignee: Janssen Pharmaceutica NV
    Inventors: Eddy Jean Edgard Freyne, Marc Willems, Peter Ten Holte, Alexandra Papanikos, Werner Constant Johan Embrechts, Pierre Henri Storck, Virginie Sophie Poncelet
  • Patent number: 9628181
    Abstract: Systems and methods are disclosed that generally pertain to provisioning an optical network unit (ONU) by an optical line terminal (OLT) of a passive optical network (PON). An exemplary provisioning system includes a wireless reader incorporated into the ONU and a transponder unit attached to a fiber optic cable coupled to the ONU. The transponder unit includes a storage element in which is stored provisioning information, such a registration ID associated with the ONU. The wireless reader automatically obtains the provisioning information from the transponder when the fiber optic cable is coupled to the ONU and transmits the provisioning information to the OLT via the fiber optic cable as a part of a discovery procedure. The transmission of the provisioning information in this manner eliminates the need for a service technician to visit a customer premise and manually provide the provisioning information via a POTS port of the ONU.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: April 18, 2017
    Assignee: ADTRAN, Inc.
    Inventors: Milton Johnson, Troy Wayne White
  • Patent number: 9608722
    Abstract: The present invention discloses a method and an apparatus for measuring quality parameters of optical transmission channels. The apparatus comprises: a tunable optical filter for receiving an optical signal, performing wavelength or optical carrier demultiplexing on the optical signal, and out-of-band ASE noise suppression; an optical coherent receiver connected to the tunable optical filter, for performing polarization- and phase-diversity detection on the filtered optical signal and converting it into multiple lane baseband electrical signals; analog-to-digital converters for sampling and quantizing the multiple lane baseband electrical signals so as to convert the them into multiple lane digital signals; a digital signal processing module for processing the multiple lane digital signals to obtain quality parameters; and an display module for displaying the quality parameters.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 28, 2017
    Assignee: LUSTER LightWave Co., Ltd.
    Inventors: Weiqiang Liu, Yongpeng Zhao