Patents Issued in March 28, 2017
  • Patent number: 9608690
    Abstract: Methods, systems, and devices are described for coordinating a device to device (D2D) hopping scheme with a wide area network (WAN) hopping scheme. In one aspect, a method may include identifying, by a base station, a WAN frequency hopping scheme. The base station may coordinate a D2D frequency hopping scheme a D2D enabled user equipment (UE) with the identified WAN frequency hopping scheme, and communicate the D2D frequency hopping scheme to the D2D enabled UE. In one aspect, the D2D frequency hopping pattern may apply to retransmissions between two D2D enabled UEs. Another method may include receiving, by a D2D enabled UE, a D2D frequency hopping scheme from a base station, where the D2D frequency hopping scheme is coordinated with a WAN frequency hopping scheme. The D2D enabled UE may transmit at least one message to a second D2D enabled UE according to the D2D frequency hopping scheme.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: March 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Qiao Li, Saurabha Rangrao Tavildar
  • Patent number: 9608691
    Abstract: Methods and systems for modulating an amplifier power supply to efficiently attain amplified RF output power with much lower power dissipation than existing amplifiers. In a cable television (CATV) network, a processor receives a signal to be amplified by an amplifier at a location remote from the processor. A bias point of the amplifier may be variably modulated based on peaks of an input signal to reduce amplifier dissipation.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 28, 2017
    Assignee: ARRIS Enterprises, Inc.
    Inventors: Marcel F. Schemmann, Zoran Maricevic
  • Patent number: 9608692
    Abstract: Aspects of the subject disclosure may include, for example, a repeater device having a first coupler to extract downstream channel signals from first guided electromagnetic waves bound to a transmission medium of a guided wave communication system. An amplifier amplifies the downstream channel signals to generate amplified downstream channel signals. A channel selection filter selects one or more of the amplified downstream channel signals to wirelessly transmit to the at least one client device via an antenna. A second coupler guides the amplified downstream channel signals to the transmission medium of the guided wave communication system to propagate as second guided electromagnetic waves. Other embodiments are disclosed.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: March 28, 2017
    Assignee: AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III
  • Patent number: 9608693
    Abstract: A signal reception arrangement includes a receiver circuit having a receiver input configured to be coupled to a secondary winding of a transformer of a first communication channel, a first output for providing a data output signal, and a second output. The receiver circuit is configured to evaluate a signal level at the receiver input and to detect a signal transmission when the signal level reaches a given threshold, and generate a feedback signal dependent on a detection of the signal transmission.
    Type: Grant
    Filed: January 18, 2016
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Marcus Nuebling, Jens Barrenscheen
  • Patent number: 9608694
    Abstract: A method for locating an impairment within a telecommunication line may include determining measurement data related to the telecommunication line and estimating a location of the impairment depending on the measurement data. The measurement data includes crosstalk data including at least one transfer function element of a crosstalk matrix. The transfer function element characterizes a crosstalk transfer function from the telecommunication line towards the at least one further telecommunication line, and the method includes detecting oscillations in the crosstalk transfer function.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: March 28, 2017
    Assignee: Alcatel Lucent
    Inventors: Xavier Dardenne, Benoît Drooghaag
  • Patent number: 9608695
    Abstract: A communication system includes a transmitter, a first transmission line, and a second transmission line. The transmitter includes a modulation circuit, a carrier generator, and a pulse generator. The modulation circuit is configured to modulate a first data stream based on a first carrier signal, thereby generating a modulated signal. The carrier generator is configured to generate the first carrier signal and a reference clock signal. The pulse generator is configured to generate a pulse train signal based on the reference clock signal. The first transmission line is configured to carry the modulated signal. The second transmission line is configured to carry the pulse train signal.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 28, 2017
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Huan-Neng Chen, Chewn-Pu Jou, Feng Wei Kuo, Lan-Chou Cho, William Wu Shen
  • Patent number: 9608696
    Abstract: This disclosure provides several mechanisms for adapting transmit power spectral density (PSD). A communications device may adapt the power spectrum utilized at the transmitter based, at least in part, on the channel conditions or PSD constraints associated with the communications medium between the transmitter and a receiver device. Additionally, the transmit PSD may be adapted based, at least in part, on a total power capability associated with a transmitter. Power is allocated to improve throughput and utilization of the communications channel. A transmission profile may be selected based, at least in part, on the notch depth. The transmission profile may be associated with symbol timing parameters. The communications device may maintain a plurality of selectable pulse shapes that are optimized for different notch depths.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: March 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Hassan Kaywan Afkhami, Deniz Rende, Purva Rameshchandra Rajkotia
  • Patent number: 9608697
    Abstract: Disclosed herein are a wireless power transmitting apparatus and method of wirelessly transmitting a power to a power receiving apparatus by selectively using one central coil and two side coils, wherein in the case in which each of the one central coil and the two side coils transmits the power, a reception power amount received by the power receiving apparatus is judged, at least one of the one central coil and the two side coils is selected as a power transmitting coil that is to transmit the power by the judged reception power amount, and the power is wirelessly transmitted to the power receiving apparatus through the selected power transmitting coil.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: March 28, 2017
    Assignee: HANRIM POSTECH CO., LTD.
    Inventors: Chun-Kil Jung, Yoon-Sang Kuk
  • Patent number: 9608698
    Abstract: Communications between a base station and a transponder that is powered by the base station are effected using a signal differentiation approach. A first radio frequency signal is communicated between the base station and the transponder to power the transponder, with the first radio frequency signal including noise and data for authenticating communications between the base station and the transponder. A second radio frequency signal is communicated between the base station and the transponder, with the second radio frequency signal including data for authenticating communications between the base station and the transponder. The detection of noise presented via the first radio frequency signal is mitigated while detecting data in the second radio frequency signal, via signal differentiation.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: March 28, 2017
    Assignee: NXP B.V.
    Inventors: Frans Sessink, Frank Verwaal
  • Patent number: 9608699
    Abstract: One embodiment of the present invention discloses a method for allowing a terminal to transmit channel state information (CSI) in a wireless communication system in which a plurality of CSI reference signal (CSI-RS) resources are set for a plurality of transmission points, and the method for transmitting the CSI comprises the steps of: determining CSI reference resources; and transmitting CSI calculated from a measured signal on the basis of the CSI reference resources, wherein the CSI reference resources are included in one of at least two CSI subframe sets, the CSI subframe sets are set for each of the plurality of CSI-RS resources, and the CSI subframe sets are commonly set for transmission points which perform cooperative transmission among the plurality of transmission points.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: March 28, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Eunsun Kim, Illsoo Sohn, Hanbyul Seo, Kijun Kim
  • Patent number: 9608700
    Abstract: A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.
    Type: Grant
    Filed: February 23, 2012
    Date of Patent: March 28, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tsuguhide Aoki, Daisuke Takeda, Takahiro Kobayashi, Yasuhiko Tanabe
  • Patent number: 9608701
    Abstract: An apparatus for transmitting and receiving signal and a method thereof are provided. The apparatus for transmitting signals selects at least one array of a plurality of arrays connected to the apparatus based on a spatial covariance matrix of an uplink from a terminal to the plurality of arrays, wherein the spatial covariance matrix ensures channel reciprocity at downlink from the plurality of arrays with the terminal, and forms a transmission beam to be transmitted to the terminal through the at least one selected array.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: March 28, 2017
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Seong Rag Kim
  • Patent number: 9608702
    Abstract: One embodiment of the disclosure relates to supporting distinct single-input single-output (SISO) services in a multiple-input multiple-output (MIMO) baseband circuit, particularly suited for a distributed antenna system (DAS). In this regard, in one aspect, two communication paths in the MIMO baseband circuit are reconfigured to distribute two distinct SISO signals. A quadrature modulator modulates the two distinct SISO signals to two different radio frequency (RF) bands, respectively, based on a modulation frequency. In another aspect, the two or more distinct SISO signals are provided to the quadrature modulator using two intermediate frequencies (IFs) that are determined based on the center frequencies and bandwidths of the two different RF bands. By reconfiguring the MIMO baseband circuit to distribute the two distinct SISO signals, it is possible to retro-support new wireless communication services and/or new RF bands in existing DAS installations without replacing the MIMO baseband circuit.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: March 28, 2017
    Assignee: Corning Optical Communications Wireless Ltd
    Inventor: Liav Moshe Daniel
  • Patent number: 9608703
    Abstract: The subject matter disclosed herein provides methods and apparatus for closed loop operation of a wireless system implementing multiple input multiple output (MIMO). In one aspect, there is provided a method. The method may include receiving a payload including channel estimation information. Moreover, one or more bits of the payload may be inserted into a subset of the tiles of a slot. The slot including the subset of the tiles carrying the one or more bits of the payload may be provided as part of a closed loop MIMO-based system. Related systems, apparatus, methods, and/or articles are also described.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: March 28, 2017
    Assignee: MONUMENT BANK OF INTELLECTUAL PROPERTY, LLC
    Inventors: Ron Porat, Wee Peng Goh, Yair Bourlas
  • Patent number: 9608704
    Abstract: In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 28, 2017
    Assignee: Apple Inc.
    Inventors: Jayesh H. Kotecha, Kaibin Huang
  • Patent number: 9608705
    Abstract: In a MIMO communication system that includes a transmitter and a receiver and forms line-of-sight orthogonal channels between the transmitter-side transmitting antenna and the receiver-side receiving antenna, the MIMO communication system is provided between the transmitting antenna and the receiving antenna with an optimum antenna-to-antenna spacing shortening unit to shorten an optimum antenna-to-antenna spacing by changing the phase rotation of a carrier wave used for directly opposed waves between opposed antennas, and the phase rotation of a carrier wave used for intersecting waves between oblique antennas in such a manner that the amount by which one of the phase rotations changes is different from that by which the other phase rotation changes.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 28, 2017
    Assignee: NEC CORPORATION
    Inventor: Tsuguo Maru
  • Patent number: 9608706
    Abstract: Embodiments are provided to enable effective cancellation or reduction of the self-interference (SI) introduced when applying full-duplex (FD) transmission to Multiple-Input-Multiple-Output (MIMO) systems. A method embodiment includes forming, using a precoding matrix generated in accordance with channel conditions, a plurality of beams for a plurality of transmit signals and a plurality of self-interference cancellation signals corresponding to the plurality of transmit signals. The method further includes transmitting, at a plurality of antennas, the plurality of beams for the transmit signals, and receiving, via the plurality of antennas, a plurality of receive signals. A corresponding self-interference cancellation signal is then added to each of the plurality of receive signals to obtain a plurality of corrected receive signals, and the plurality of corrected receive signals are detected at a plurality of receivers.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: March 28, 2017
    Assignee: Huawei Technologies Canada Co., Ltd.
    Inventors: Tho Le-Ngoc, Sean Huberman
  • Patent number: 9608707
    Abstract: Aspects for balancing power output on the plurality of antennas for the transmission of a transport block are disclosed. In accordance with the present disclosure, a transmitter may balance the power output on a plurality of transmit antennas in a multiple-input multiple-output (MIMO) system by having a precoded data block bypass a virtual antenna mapping of the overhead channels (e.g., control channels). Additionally or alternatively, the transmitter may balance the power output on the plurality of transmit antennas by applying an inverse mapping parameter during the precoding process to the transport block to generate a plurality of inverse mapped precoded data blocks. In some examples, the inverse mapping parameter may be an inverse of the mapping parameter. Thus, in accordance with the present disclosure, precoding a transport block may include selecting a precoding weight for each of the plurality of antennas from an unrestricted precoding weight set.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: March 28, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Heechoon Lee, Sanaz Barghi, Feng Han, Sharad Deepak Sambhwani
  • Patent number: 9608708
    Abstract: Embodiments of the present invention provide a method includes: receiving a reference signal sent by a base station; selecting, based on the reference signal, a precoding matrix from a codebook, where a precoding matrix w included in the codebook is a product of three matrices being W1, Z, and W2, that is, W=W1ZW2, where both W1 and Z are block diagonal matrices, W1=a formula (I), Z=a formula (II), each of W1 and Z includes at least one block matrix, that is, NB?1, and each column of each block matrix Zi in the matrix Z has the following structure formula (III); and sending a precoding matrix indicator (PMI) to the base station, where the PMI corresponds to the selected precoding matrix, and is used by the base station to obtain the selected precoding matrix w according to the PMI.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: March 28, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jianguo Wang, Yongxing Zhou, Jianghua Liu
  • Patent number: 9608709
    Abstract: System and methods for (i) covering wirelessly a large angular span using combinations of directional antennas, (ii) dynamic synthesis of antenna radiation patterns, and (iii) antenna configuration selection and beamforming.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: March 28, 2017
    Assignee: GoNet Systems, Ltd.
    Inventors: Roy Kinamon, Gal Zuckerman, Moshe Salhov, Oz Liv
  • Patent number: 9608710
    Abstract: Examples may include techniques to enable user equipment (UE) to establish a device-to-device (D2D) communication link for D2D communications with another UE. In some examples, the D2D communications may occur when either both or at least one UE is within a coverage area for a wireless wide area network (WWAN). In some other examples, both UEs may be outside of the coverage area and may utilize a third UE to provide or relay information for use to establish the D2D communication link.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 28, 2017
    Assignee: INTEL IP CORPORATION
    Inventors: Jong-Kae Fwu, Debdeep Chatterjee, Alexey Khoryaev, Gang Xiong
  • Patent number: 9608711
    Abstract: Disclosed apparatuses obtain real-time performance measurements and adaptively select multiple-input, multiple-output (MIMO) antennas to improve MIMO antenna performance. A correlation estimator determines an approximation of instantaneous antenna correlation values. One method includes obtaining a channel quality indicator (CQI) measurement for first and second antennas of a mobile device. The method determines a composite CQI for the two antennas and estimates the antenna correlation for the first and second antennas based on the composite CQI. The method can include performing a lookup operation in a CQI table mapping composite CQI to coding rates. The method can include obtaining a signal-to-noise ratio (SNR) measurement for the first and second antennas of the mobile device, and estimating the antenna correlation for the first and second antennas based on the composite CQI and the SNR measurement.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 28, 2017
    Assignee: GOOGLE TECHNOLOGY HOLDINGS LLC
    Inventors: Krishna K. Bellamkonda, Eric L. Krenz, Nischal Y. Patel, Brett L. Robertson, Istvan J. Szini
  • Patent number: 9608712
    Abstract: Methods and apparatuses are provided for controlling a transmission signal in a transceiver. Cyclic shift values that are applied to transmission signals are determined, when the transmission signals are to be transmitted through multiple layers. The transmission signals are cyclically shifted according to the cyclic shift values. The cyclically-shifted transmission signals are added. The added cyclically-shifted transmission signals are transmitted.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 28, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Chanhong Kim, Jiyun Seol, Taeyoung Kim, Jaeseung Son, Keonkook Lee
  • Patent number: 9608713
    Abstract: The present disclosure relates to an interference cancellation method and device of an ICS repeater using a leveler, and may effectively cancel only interference signals by using a leveler without using a magnetic correlation cancellation device or digital filter in order to cancel unnecessary noise signals generated by narrow-band signals and enable an ICS repeater design for an LTE wireless network that needs a short system time delay.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 28, 2017
    Assignee: RF WINDOW CO., LTD.
    Inventors: Yong Seok Oh, Young Cheol Jeon, Kyoung Soo Park
  • Patent number: 9608714
    Abstract: A method for modifying a communication signal for transmission from a source to a destination includes identifying, by data processing hardware, a target platform for communication with a communication device. The method includes establishing a communication connection between the target platform and the communication device and identifying an available communication channel for communicating data between the target platform and the communication device. The method also includes modifying a communication signal by multiplying the communication signal with a pseudo random noise spreading code. The method also includes causing transmission of the modified communication signal from the communication device to the target platform through the available communication channel. The modified communication signal is transmitted below a thermal noise of the available communication channel.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: March 28, 2017
    Assignee: Google Inc.
    Inventor: Dedi David Haziza
  • Patent number: 9608715
    Abstract: A Long Term Evolution (LTE) network delivers a media service that uses an Access Point Name (APN) Quality-of-Service (QoS) Class Identifier (QCI) to serve User Equipment (UE) over a wireless relay. A relay control system transfers a session request indicating the APN QCI to a wireless base station serving the wireless relay. The base station and the wireless relay configure a wireless network bearer to use the APN QCI. Responsive to the network bearer configuration, the wireless relay transfers a relay bearer request for the APN QCI to the relay control system. The relay control system returns a session request to the wireless relay. The wireless relay and the UE then configure a wireless access bearer to use the APN QCI. The wireless relay exchanges user media over the wireless access bearer and the wireless network bearer between the UE and the wireless base station using the APN QCI.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: March 28, 2017
    Assignee: Sprint Cômmunications Company L.P.
    Inventor: Zheng Fang
  • Patent number: 9608716
    Abstract: This disclosure provides systems, methods and apparatus for determining beamforming coefficients that correct for pointing errors. In one aspect, a subsystem of a ground station can receive calibration signals from a satellite. The properties of the calibration signals can be measured and used to determine the pointing error of the satellite. Beamforming coefficients based on the pointing error can be provided by the ground station to the satellite.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: March 28, 2017
    Assignee: Space Systems/Loral, LLC
    Inventors: Farid Elwailly, William Hreha
  • Patent number: 9608717
    Abstract: A gateway device includes a media processor module comprising a gateway application module. The gateway device also includes a router module comprising a gateway abstraction module and an interface handler module. The gateway device also includes a shared interface module in communication with the router module and the media processor module. The shared interface module receives a service request signal from the gateway application module. The gateway abstraction module obtains the service request signal from the shared interface module through an interface handler module. The gateway abstraction module communicates a response signal to the media processor module through the shared interface module. The media processor module performs a function in response to the response signal.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 28, 2017
    Assignee: The DIRECTV Group, Inc.
    Inventors: Robin M. Mathews, Henry Derovanessian
  • Patent number: 9608718
    Abstract: A method and apparatus are provided for demodulating a received signal containing modulated desired-signal digital data and relayed-interference that results from a nonlinear-distorted interference signal. Estimation of the nonlinear-distorted interference from a pre-distortion interference signal and subsequent cancellation within the received signal of the distorted interference produces a residual-interference signal that is subsequently demodulated to produce estimates of the desired-signal data. The estimation is adapted for changing nonlinear distortion effects.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: March 28, 2017
    Inventors: Peter Monsen, Richard Hollingsworth Cannon
  • Patent number: 9608719
    Abstract: A method for operating an optical network (ON) using a control plane (CP), including: identifying, by the CP, a failure of a client facility connecting a network element of the ON and a client device; and terminating, by the CP and in response to identifying the failure, an optical connection through the ON for the client device.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: March 28, 2017
    Assignee: Ciena Corporation
    Inventors: Darek Skalecki, Gary Swinkels, Steven Arvo Surek
  • Patent number: 9608720
    Abstract: An optical splitter assembly including a splitter housing, a passive optical power splitter positioned within the splitter housing and a plurality of splitter output pigtails that extend outwardly from the splitter housing. Each of the splitter output pigtails including an optical fiber structure having a first end optically coupled to the passive optical power splitter and a second end on which a fiber optic connector is mounted. Each of the splitter output pigtails having a different test characteristic such that the splitter output pigtails can be individually identified during optical network testing.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: March 28, 2017
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventor: Trevor D. Smith
  • Patent number: 9608721
    Abstract: A method of calculating a transmitter and dispersion penalty for predicting optical link signal quality includes providing an optical link; capturing an averaged eye, using an optical test signal sequence to drive the transmitter with an oscilloscope receiver having an oscilloscope bandwidth as available; and from the averaged eye, capturing histograms A1; capturing a non-averaged eye using an optical test signal sequence to drive the transmitter, and from the non-averaged eye, capturing histograms B1; de-convolving histograms A1 from histograms B1; filtering waveform from step 1), convolve the filtered waveform from step 4) with the estimate of the noise from 3); and calculating “soft” TDP based on the probability distribution function.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: March 28, 2017
    Assignee: MELLANOX TECHNOLOGIES DEMARK APS
    Inventor: Piers James Geoffrey Dawe
  • 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
  • Patent number: 9608723
    Abstract: System and method embodiments are provided for carrier-signal power ratio (CSPR) control in direct detection optical systems. In an embodiment, a method for CSPR control in a direct detection optical system includes receiving an electrical signal in a receiver (RX) digital signal processor (DSP), wherein the electrical signal is obtained from a corresponding optical signal via a direct detection component; estimating, a CSPR for the electrical signal; generating one of a control signal according to the CSPR; and transmitting the control signal to one of an optical filter and a laser, wherein the wavelength control signal controls causes a center wavelength (CW) of one of the optical filter and the laser to be adjusted such that an offset between the CW of the laser and the CW of the optical filter results in a desired CSPR.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: March 28, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Chen Chen, Chuandong Li, Zhuhong Zhang
  • Patent number: 9608724
    Abstract: A method for embedding data in light, wherein the method comprises the step of operating at least two light sources (A, B) arranged to emit light (101) having color coordinates (x, y) and luminous intensity (Y), wherein each light source is arranged to emit light (101a, 101b) which is distinguishable from the light of at least one other light source, and embedding data in the light emitted from the at least two light sources. The method further comprises the step of operating the at least two light sources such that the color coordinates of the light emitted from the at least two light sources are maintained over time within a first, bounded interval (115), and the luminous intensity of the light emitted from the at least two light sources is maintained over time within a second, bounded interval (116).
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: March 28, 2017
    Assignee: PHILIPS LIGHTING HOLDING B.V.
    Inventors: Ties Van Bommel, Rifat Ata Mustafa Hikmet, Tim Corneel Wilhelmus Schenk
  • Patent number: 9608725
    Abstract: An information processing program causes a computer to execute: encoding information to be transmitted, to determine a luminance change frequency; and outputting a signal of the determined luminance change frequency to cause a light emitter to change in luminance according to the determined luminance change frequency to transmit the information. In the encoding, each of a first frequency and a second frequency different from the first frequency is determined as the luminance change frequency. In the outputting, each of a signal of the first frequency and a signal of the second frequency is output as the signal of the determined luminance change frequency, to cause the light emitter to change in luminance according to the first frequency during a first time and change in luminance according to the second frequency during a second time different from the first time after the first time elapses.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: March 28, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Hideki Aoyama, Mitsuaki Oshima, Koji Nakanishi, Toshiyuki Maeda, Akihiro Ueki, Kengo Miyoshi, Tsutomu Mukai
  • Patent number: 9608726
    Abstract: A display device according to the present disclosure includes: a backlight control unit configured to divide the luminescence surface of the backlight into a plurality of areas, and, based on the image signal, (i) perform luminescence control in each of the plurality of areas and (ii) set off periods starting at different times for the plurality of areas. The backlight control unit performs luminescence control in a visible light communication area which is at least one area among the plurality of areas in a period in which the visible light communication signal is output, based on the visible light communication signal, instead of performing luminescence control based on the image signal, and performs the luminescence control based on the image signal, in the visible light communication area, in a period in which the visible light communication signal is not output.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 28, 2017
    Assignee: PANASONIC CORPORATION
    Inventors: Akihiro Ueki, Toshiyuki Maeda, Takashi Suzuki, Akira Shiokawa, Koji Aoto, Koji Nakanishi, Hideki Aoyama, Mitsuaki Oshima
  • Patent number: 9608727
    Abstract: In a transmitting method that enables communication between various devices including devices other than lightings, a luminance change pattern is determined by modulating a visible light signal, a common switch for turning ON, in common, a plurality of light sources which are included in a light source group of a display and are each used for representing a pixel in an image is switched according to the luminance change pattern, and a first pixel switch for turning ON a first light source among the plurality of light sources included in the light source group is turned ON, to cause the first light source to be ON only for a period in which the common switch is ON and the first pixel switch is ON, to transmit the visible light signal.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: March 28, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
    Inventors: Hideki Aoyama, Mitsuaki Oshima, Koji Nakanishi, Toshiyuki Maeda, Akihiro Ueki, Kengo Miyoshi, Tsutomu Mukai
  • Patent number: 9608728
    Abstract: Systems and methods are provided to improve flexibility of optical signal transmission between integrated circuit devices, and more specifically data utilization circuits. More specifically, the integrated circuit devices may include a data utilization circuit communicatively coupled to a field programmable optical array (FPOA). In some embodiments, the FPOA may convert an electrical signal received from the data utilization to an optical signal, route the optical signal to an optical channel, and multiplex the optical signal with other optical signals routed to the optical channel. Additionally or alternatively, the FPOA may de-multiplex a multiplexed optical signal based on wavelength, route an optical signal included in the multiplexed optical signal to an electrical channel, convert the optical signal into an electrical signal, and output the electrical signal to the data utilization circuit via an electrical channel.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: March 28, 2017
    Assignee: Altera Corporation
    Inventors: Mike Peng Li, Joel Martinez, Jon Long, Weiqi Ding, Sergey Yuryevich Shumarayev
  • Patent number: 9608729
    Abstract: A PHY auto-negotiation and link up procedure for Ethernet Passive Optical Network Over Coax (EPOC) is provided. The procedure is compliant with the Ethernet Passive Optical Network (EPON) standard and can be used to bring an EPOC network to user traffic readiness. In addition, the procedure, or a variation thereof, can be used to enable periodic maintenance of the coaxial link of the EPOC network, thereby maintaining adequate communication conditions.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: March 28, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Edward Wayne Boyd, Avi Kliger
  • Patent number: 9608730
    Abstract: Particular embodiments use aggregation logic that reduces the noise in a daisy-chained optical return signal aggregation of multiple nodes. The aggregation logic determines when an input to a transmitter/receiver is not used and disables or turns off that input. Further, in the case of daisy-chaining, a service group aggregation signal (e.g., RF signals) from the customer premise equipment (CPEs) serviced by a respective node are presented to the channel “A” port of a digital return transmitter/receiver. However, internal to the transmitter/receiver, aggregation logic auto-senses what optical return signals have already been aggregated up to that point in the daisy chain and can then intelligently place the service group aggregation signal onto one of the digital return transmitter channels. In one embodiment, if there are two return channels, A and B, whichever of these channels has seen fewer aggregations up to this point, will receive the service group aggregation signal.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: March 28, 2017
    Assignee: ARRIS Enterprises, Inc.
    Inventors: Zhijian Sun, Reza A. Saedi, Zoran Maricevic, Dean Painchaud
  • Patent number: 9608731
    Abstract: A microfabricated optical apparatus that includes a light source driven by a waveform, a turning mirror, and a beam shaping element, wherein the waveform is delivered to the light source by at least one through silicon via.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: March 28, 2017
    Assignee: Innovative Micro Technology
    Inventor: Christopher S. Gudeman
  • Patent number: 9608732
    Abstract: It becomes difficult to regenerate transmitting signals depending on modulation systems for the optical phase modulation in a polarization multiplexed optical communication system employing the optical digital coherent communication system, therefore, an optical transmitter according to an exemplary aspect of the invention includes first optical quadrature modulation means for performing a phase modulation on a first continuous light beam and outputting a first transmitting light beam; second optical quadrature modulation means for performing a phase modulation on a second continuous light beam belonging in the same frequency band as that of the first continuous light beam and outputting a second transmitting light beam; optical phase difference adding means for adding an optical phase difference varying temporally between the first transmitting light beam and the second transmitting light beam; and polarization multiplexing means for polarization-multiplexing the first transmitting light beam and the second
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: March 28, 2017
    Assignee: NEC CORPORATION
    Inventor: Daisaku Ogasahara
  • Patent number: 9608733
    Abstract: Embodiments of the present disclosure are directed toward techniques and configurations for an optical apparatus to control optical power of the light source. In one embodiment, the apparatus may include a transmitter and receiver to transmit and receive optical signals over an optical communication channel, and a controller to cause the transmitter to transmit pulse signals at a first power level and detect a change in optical power in the channel, indicating a presence of a signal from another optical apparatus. The controller may confirm that the detected apparatus is capable of communications at a second power level (greater than the first level) and initiate data transmission at the second level. Upon detection of a failure in the channel, the controller may cause the transmitter to halt the data transmission and restart the pulse signals at the first power level. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: March 28, 2017
    Assignee: Intel Corporation
    Inventors: Chris Pavlas, Guobin Liu, Maciej Machnikowski, Christine M. Krause, Scott P. Dubal
  • Patent number: 9608734
    Abstract: An optical transmission system includes: a reception apparatus configured to receive signal light separated from wavelength division multiplexing light; and a management apparatus configured to manage a plurality of optical transmission apparatuses that transmit the wavelength division multiplexing light, wherein the reception apparatus further comprises: an amplification section configured to amplify each power of electric signals for demodulating the signal light within a predetermined tolerance level, the electric signals being converted from mixed light of local light and the signal light input into the reception apparatus; an adjustment section configured to adjust power of the signal light input into the reception apparatus or power of the local light; and a controller configured to control the adjustment section based on an adjustment amount notified by the management apparatus, the management apparatus includes a computer.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 28, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Makoto Murakami, Noriaki Mizuguchi
  • Patent number: 9608735
    Abstract: The present invention is directed to a MIMO equalization system and method, optimized for baud rate clock recovery in coherent symbol-spaced DP-QPSK Metro systems. According to this method, the Mueller & Muller timing function is extended to cope with controlled ISI induced signals, while decoupling between MIMO equalization and clock recovery loops, using a midpoint output of the equalizer for timing estimation, instead of its final output. At least a portion of controlled Inter-Symbol Interference (ISI) is kept intact and the controlled ISI is compensated by an MLSE, right after carrier timing synchronization.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: March 28, 2017
    Assignee: Multiphy Ltd.
    Inventors: Albert Gorshtein, Guy Dorman, Dan Sadot
  • Patent number: 9608736
    Abstract: A planar lightwave circuit and an optical receiver which reduce degradation in signal quality is provided.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 28, 2017
    Assignee: NEC Corporation
    Inventor: Shinya Watanabe
  • Patent number: 9608737
    Abstract: Disclosed is a circuit for realizing passivation of an intelligent optical distribution interface disc in a machine disc enable manner, which relates to the field of optical communications. In the present invention, a distribution port is separated from distribution management, all management circuits on a distribution interface disc are moved out, and all control and management functions are achieved on a distribution management disc, to enable passivation of a distribution interface disc circuit, i.e. any active electronic devices such as integrated circuits, triodes, etc. which are easily damaged by static electricity and affected by fouling are not placed on the distribution interface disc any longer, and power lines are not introduced in the distribution interface disc.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: March 28, 2017
    Assignee: FIBERHOME TELECOMMUNICATION TECHNOLOGIES CO., LTD.
    Inventors: Fei Lei, Qiufu Chen, Yang Wang, Man Yi, Feng Wang, Yun Rong, Xiongbao Luo
  • Patent number: 9608738
    Abstract: A Doppler compensation system includes a transmitter unit for transmitting a signal, wherein the transmitted signal being associated with an emission time-scale, a receiving unit for receiving a signal, wherein the received signal is associated with a receive time-scale that is not equivalent to the emission time-scale, and a Doppler compensating unit configured to estimate an inverse temporal distortion function, wherein the Doppler compensating unit implements the inverse temporal distortion function to estimate the transmitted signal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 28, 2017
    Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Thomas J. Riedl, Andrew C. Singer
  • Patent number: 9608739
    Abstract: The system includes a controller communicatively connected to a first and second device. The first and second devices have multiple wireless technologies capabilities, such as Bluetooth, Wi-Fi, and other known wireless technologies. The controller is configured to combine two signals generated from the wireless technologies into a single blended signal to transmit data from the first device to the second device or vice versa. The wireless technologies may be selected via a user interface which is communicatively connected to one of the first and second devices. Additionally, the wireless technologies may be selected using voice command or automatically selected by the type of data an operator designates. The controller is configured to combine two signals generated from the wireless technologies into a blended signal as well as allow two-way communication between the first and second device.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: March 28, 2017
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Wes A. Nagara, Theodore Charles Wingrove