Patents Examined by Siu Lee
  • Patent number: 10263685
    Abstract: A radio receiver component includes a first antenna line for receiving a first signal and a second antenna line for receiving a second signal. Each of the first signal and the second signal is a respective intermediate frequency (IF) signal produced by down-converting a respective radio frequency (RF) signal received by a respective antenna. The first antenna line includes a demodulator that receives the first signal and down-converts the first signal to produce one or more baseband signals, one or more variable baseband delay paths that delay the one or more baseband signals, a modulator that receives the one or more delayed baseband signals and up-converts the one or more delayed baseband signals to produce a third IF signal. The radio receiver component further includes a combiner that receives and combines the second signal and the third signal to produce a fourth signal.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: April 16, 2019
    Assignee: ZTE CORPORATION
    Inventors: Andrey Kochetkov, Ying Shen, Shawn Walsh
  • Patent number: 10205473
    Abstract: An error-feedback transmitter includes an input that receives an input signal, and an output that produces an output signal. It also includes an amplifier, located on a main path that carries a main signal between the input and the output. The transmitter includes a feedback path that carries a feedback signal from the output to the input, and a feedback-signal combiner, located on the main path between the input and the amplifier. The feedback-signal combiner negatively combines the feedback signal with the input signal to improve linearity in the output signal. The transmitter includes a feedforward path that carries a feedforward signal from the input toward the output, and a feedforward-signal combiner, located on the feedback path between the output and the feedback-signal combiner. The feedforward-signal combiner negatively combines the feedforward signal with the feedback signal to suppress components of the main signal in the feedback signal.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 12, 2019
    Assignee: The Regents of the University of California
    Inventors: Qun Gu, Jinbo Li
  • Patent number: 10205475
    Abstract: Aspects of the subject disclosure may include, for example, a communication node having a modem that receives first data streams from a source communication node via a first plurality of twisted pair transmission lines. A multiplexer selects a first subset of the first data streams and a second subset of the first data streams. A wireless transceiver wirelessly transmits the first subset of the first data streams as radio frequency signals via an antenna to at least one device. A distribution point unit transmits the second subset of the first data streams on a second plurality of twisted pair transmission lines to a destination communication node of a distributed antenna system.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: February 12, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Irwin Gerszberg, George Blandino
  • Patent number: 10200189
    Abstract: A Dual-mode forward path PLL system and method are disclosed. The forward path PLL system includes a phase frequency detector (PFD) circuit including a first input node a second input node, a first output node a second output node, where the PFD receives a first input signal, a second input signal and generates a first output signal and second output signal, and where the first input signal is a reference frequency signal and the second input signal is a divided frequency value signal, a charge pump circuit including a third input node, a fourth input node and a third output node, where the third input node and the fourth input node are coupled to the first output node and the second output node of the PFD and where the Charge pump is programmable; and a loop filter circuit including a fifth input node and fourth output node, where the fifth input node is coupled to the third output node of the charge pump and where the loop filter circuit is programmable.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: February 5, 2019
    Assignee: SPATIALLINK CORPORATION
    Inventors: Qiang Li, Chen Chen
  • Patent number: 10193730
    Abstract: An orthogonal frequency division multiplexing (OFDM) transmission system is provided which includes a data processing unit which generates a transmission signal using a plurality of tones including a reserved tone, a storage unit which stores Peak Reduction Kernel information according to the type of data symbol, and a compensation unit which retrieves the Peak Reduction Kernel information according to the type of data symbol from the storage unit and causes the retrieved information to be carried by the reserved tone included in the transmission signal. Therefore, a Peak-to-Average Power Ratio (PAPR) can be efficiently compensated.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: January 29, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyo-shin Choo, June-hee Lee
  • Patent number: 10181883
    Abstract: Methods, apparatus, and systems for wireless communications are described. Example methods, devices, and systems are described that utilize a precoding matrix indicator (PMI) computed based at least in part on first signals received via a first cell and on second signals received via a second cell. Information in a measurement information message may be used as part of computing a PMI. The measurement information message may indicate resources of a first cell and a second cell for use in computing the PMI. A wireless device may receive first signals via the first cell and second signals via the second cell based on information in the measurement information message, and may use these signals to compute the PMI. The computed PMI may be used in communications with a base station. For example, the wireless device may receive a packet beamformed employing the computed PMI.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: January 15, 2019
    Assignee: Comcast Cable Communications, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 10177855
    Abstract: An amplitude adjustment circuit includes a memory that stores correspondence information between frequency distributions of an amplitude and adjustment coefficients, a processor configured to generate a frequency distribution of amplitude of data for which adaptive equalization processing has been executed, acquire the correspondence information between frequency distributions of the amplitude and adjustment coefficients from the memory, select the adjustment coefficient based on a result of comparison between the frequency distributions included in the correspondence information acquired by the acquiring unit and the frequency distribution generated by the generating unit, and adjust a gain of the data based on the adjustment coefficient selected by the selecting unit.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: January 8, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Masashi Sato, Kazuhiko Hatae, Nobukazu Koizumi, Yasuo Ohtomo, Masato Oota, Daisuke Sasaki, Yuya Imoto
  • Patent number: 10177858
    Abstract: A method of encoding a plurality of data signals is disclosed. The method includes selecting a set of M ultrasonic frequencies, wherein each of the M ultrasonic frequencies differs from an adjacent frequency by at least a first frequency spacing, and wherein M is a positive integer. An encoder receives the plurality of data signals. Each of the plurality of data signals is encoded by a respective set of Q of the M ultrasonic frequencies, wherein Q is a positive integer less than M. A minimum frequency separation between any pair of the Q ultrasonic frequencies of any respective set is greater than the first frequency spacing.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 8, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Mehmet Ali Donmez, Anand Ganesh Dabak, Il Han Kim, Timothy Mark Schmidl
  • Patent number: 10158416
    Abstract: An unattended apparatus and method for isolating and relaying secure communications under adverse circumstances without awareness of encryption keys uses known and/or inferred characteristics of received transmissions to identify, isolate, and retransmit only friendly communications without decryption or re-encryption, and in embodiments also without awareness of applicable TRANSEC algorithms and keys. A channelizer digitizes energy received within a bandwidth of interest, which is then analyzed to detect chip timing, identify and demodulate pulses, and assemble secure messages for retransmission. In embodiments, the retransmissions use the original frequencies and TRANSEC parameters, and/or otherwise adhere to applicable TRANSEC and MSEC constraints so that the relayed messages are accepted by intended recipients. Embodiments provide interoperability with existing secure communications such as Link 16 and CDL.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 18, 2018
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: David A Cooper, John H Chongoushian, Bruce M Eteson, Jeffrey P Pincus, John A Tranquilli, Jr.
  • Patent number: 10158396
    Abstract: Infrastructure electronics equipment incorporates infrastructure Local-Site Transports (LSTs). LSTs convey payload sampled signals over imperfect electromagnetic (EM) pathways whose physical properties are usually unknown when the equipment (e.g., Cameras, Displays, Set-Top Boxes) is manufactured. Prior LSTs hedge against EM pathway degradation in several ways: requiring high-quality cables (e.g., HDMI); restricting transmission distance, (e.g., HDMI); and/or reducing quality, via compression, to extend transmission distance somewhat (e.g., Ethernet). The subject of this disclosure is an infrastructure LST for sampled signals that causes the physical errors inevitably arising from propagation of sensory payloads over imperfect EM pathways to manifest in a perceptually benign manner, leveraging legacy infrastructure and reducing costs to achieve a favorable ratio of fidelity to transmission distance.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: December 18, 2018
    Assignee: Rockoff Security PTY LTD
    Inventors: Rob Hannebauer, Todd Rockoff, Dean Rubine
  • Patent number: 10153856
    Abstract: A channel multiplexing method for reading out a detector signal is provided, including steps: grouping L detectors to form a first source signal and a second source signal; respectively introducing L detector signals into a first signal transmission line including two readout channels A and B and a second signal transmission line including two readout channels C and D, and providing a first signal delay unit and a second signal delay unit on the first signal transmission line and the second signal transmission line; and symbolizing source detectors for forming signals according to pulses of the four readout channels A, B, C and D, and obtaining final pulse information.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: December 11, 2018
    Assignee: RAYCAN TECHNOLOGY CO., LTD. (SUZHOU)
    Inventors: Qingguo Xie, Yuexuan Hua, Huihua Wen, Daoming Xi
  • Patent number: 10148296
    Abstract: A transmitter includes a signal generator arranged to generate a digital baseband signal representative of a signal for transmission; a digital predistortion, DPD, circuit configured to predistort the digital baseband signal; and a signal adjustment circuit operably coupled to the signal generator and the DPD circuit and configured to receive the generated signal and apply shaping to adjust the predistortion applied to the envelope of the generated signal.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: December 4, 2018
    Assignee: MediaTek, Inc.
    Inventors: Toru Matsuura, Paul Cheng Po Liang
  • Patent number: 10142146
    Abstract: A broadcast signal receiver is provided that includes an Orthogonal Frequency Division Multiplexing (OFDM) demodulator configured to OFDM demodulate a received broadcast signal; a pilot detector configured to detect pilots included in the broadcast signal; a frame parser configured to parse a signal frame of the broadcast signal and to output Physical Layer Pipe (PLP) data, the signal frame comprising a bootstrap, a preamble, and a data part; and a decoder configured to perform Forward Error Correction (FEC) decoding on the PLP data. The bootstrap comprises preamble structure information about the preamble. The preamble comprises a plurality of preamble symbols. The preamble carries Layer 1 (L1) signaling data for the signal frame. A first preamble symbol has a minimum number of carriers (NoC) and the first preamble symbol comprises NoC-related information indicating an NoC for at least one remaining preamble symbol.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: November 27, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaehyung Kim, Woosuk Ko, Sungryong Hong
  • Patent number: 10142136
    Abstract: Embodiments are directed to systems, apparatuses and methods for providing self-consistent outphasing signal separation. In one scenario, such an apparatus includes the following: a receiver configured to receive a variable-envelope signal and an outphasing separator including a digital electronic component configured to split the received variable-envelope signal into first and second constant-envelope signals. Splitting the received variable-envelope signal includes implementing various trigonometric or other functions using a consistent phase. The apparatus further includes a first analog component chain that includes various analog electrical components configured to receive and process the first constant-envelope signal, as well as a second analog component chain that includes various analog electrical components configured to receive and process the second constant-envelope signal.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 27, 2018
    Assignee: L3 Technologies Inc.
    Inventors: Janez Jeraj, Johnny M. Harris, David G. Landon, William K. McIntire
  • Patent number: 10141964
    Abstract: A CMOS channel select filter for DVB-H direct-conversion receives based on a transresistance amplifier (TRA) is disclosed. The channel select filter includes a fully differential transresistance amplifier (FDTRA) configured to change an input current at each differential input terminal to a voltage at each differential output terminal based on an impedance at a corresponding differential impedance terminal. The channel select filter also includes two feedback resistors, each having one end connected to a respective differential output terminal of the FDTRA and having another end connected to the node, two first capacitors, each connected between ground and the node, and two second capacitors, each connected between ground and a respective differential impedance terminal.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 27, 2018
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: Hussain Alzaher
  • Patent number: 10135506
    Abstract: Method and system for transmitting a directionally modulated data stream via an antenna array. A first signal processing circuitry receives a data symbol of a first data stream, maps the first data stream to a specified number of sub-beams based on a stream beam-width assignment, assigns a direction angle for transmission of the data stream, and transmits in parallel, for each of the specified number of sub-beams, an instance of the data symbol to a second signal processing circuitry. The second signal processing circuitry generates antenna array element weights based on the data symbol and a matrix having a DFT structure. The matrix is independent of the assigned direction angle. The data symbol is transmitted via the antenna array utilizing the antenna array element weights. The DFT is implemented as a fast Fourier transform. White noise is transmitted in the sub-beams beams outside the beam-width requirement of the data stream.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: November 20, 2018
    Assignee: University of South Florida
    Inventors: Mohammed Hafez, Huseyin Arslan, Tamer Khattab
  • Patent number: 10135546
    Abstract: Aspects of the subject disclosure may include, for example, a system for generating electromagnetic waves having a fundamental wave mode, and directing the electromagnetic waves to an interface of a transmission medium for guiding propagation of the electromagnetic waves. Other embodiments are disclosed.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: November 20, 2018
    Assignee: AT&T Intellectial Property I, L.P.
    Inventors: Paul Shala Henry, Robert Bennett, Farhad Barzegar, Irwin Gerszberg, Donald J. Barnickel, Thomas M. Willis, III
  • Patent number: 10136404
    Abstract: Systems and associated methods for reciprocity calibration of multiple-input multiple-output (MIMO) wireless communication are disclosed herein. In one embodiment, a method for reciprocity calibration of the MIMO system includes transmitting a pilot symbol by a transmitter (TX) of the reference antenna and receiving the pilot symbol by receivers (RXes) of antennas of a base station as ri,0 pilot symbols. (Index “i” denotes individual antenna “i” of the base station, and “0” denotes the reference antenna.) The method further includes transmitting the received pilot symbols by TXes of the antennas of the base station, receiving the pilot symbols transmitted by the antennas of the base station by the reference antenna as r0,i pilot symbols, and calculating non-reciprocity compensation factors as r i , 0 r 0 , i .
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: November 20, 2018
    Assignee: Facebook, Inc.
    Inventor: Djordje Tujkovic
  • Patent number: 10129061
    Abstract: A broadcast signal transmitter is disclosed. A broadcast signal transmitter according to an embodiment of the present invention comprises an input formatting module performing baseband formatting and outputting at least one Physical Layer Pipe (PLP) data; a BICM module error-correction processing the PLP data; a framing & interleaving module interleaving the PLP data and generating a signal frame; and a waveform generating module inserting a preamble into the signal frame and generating a broadcast signal by performing OFDM modulation.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: November 13, 2018
    Assignee: LG ELECTRONICS, INC.
    Inventors: Jaehyung Kim, Woosuk Ko, Chulkyu Mun, Sungryong Hong
  • Patent number: 10103915
    Abstract: A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 16, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaehyung Kim, Woosuk Ko, Chulkyu Mun, Sungryong Hong