Patents Examined by Phuong Phu
  • Patent number: 10355886
    Abstract: The present invention is directed to data communication systems and methods. More specifically, embodiments of the present invention provide techniques for transceivers to quickly identify FEC mode used in data communication. A transmitting transceiver embeds FEC mode information in a designated field of an alignment marker. The receiving transceiver acknowledges the receipt of the FEC mode information and processes the incoming data accordingly. There are other embodiments as well.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: July 16, 2019
    Inventors: Arun Tiruvur, Sudeep Bhoja
  • Patent number: 10355344
    Abstract: An electronic device such as a wristwatch may be provided with a wireless local area network (WLAN) transceiver, satellite receiver, and cellular transceiver. A first antenna may include a radiating slot between a conductive housing wall and a display module. A second antenna may include conductive structures that radiate through a rear face of the device. The WLAN transceiver and the satellite receiver may be coupled to the first antenna. A switch may be coupled between the cellular transceiver and the first and second antennas. Control circuitry may adjust the switch to route signals between the cellular transceiver and a selected one of the first and second antennas based on wireless performance metric data so that the antenna exhibiting superior wireless performance at cellular telephone frequencies is used for cellular telephone communications regardless of environmental conditions.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: July 16, 2019
    Assignee: Apple Inc.
    Inventors: Andrea Ruaro, Carlo Di Nallo, Dimitrios Papantonis, Eduardo Jorge Da Costa Bras Lima, Jayesh Nath, Jiaxiao Niu, Mario Martinis, Mattia Pascolini, Zheyu Wang
  • Patent number: 10355885
    Abstract: A method in a fixed point-to-point radio link transceiver, the method comprising the steps of receiving a first signal from a far end transceiver in a first frequency band, and detecting the presence of interference in the received first signal, as well as transmitting a second signal to the far end transceiver. The step of transmitting comprising including, in the second signal, a request to reduce transmission symbol rate in the far end transmitter when interference is detected in the received first signal.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: July 16, 2019
    Inventors: Björn Gävert, Göran Nilsson
  • Patent number: 10341158
    Abstract: A segment-based approach for fast fourier transforms of input signals is provided for the generation of baseband signals. A FFT is performed individually for each of the segments from the input signal and the FFT result from each segment is accumulated to provide a final FFT for an input signal symbol. After the samples are received for one segment, a FFT can be performed to generate an intermediate FFT result while samples for the additional segment(s) are received. The system accumulates the intermediate result from the segments into a final FFT result that can be used to generate the baseband signal. Segment-based processing of an input signal can provide faster and more efficient processing to generate a baseband signal. Segment-based processing can also decrease the required size of the input buffers for antennas.
    Type: Grant
    Filed: May 17, 2017
    Date of Patent: July 2, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Weizhong Chen, Tao Zhang
  • Patent number: 10284363
    Abstract: A serial transmitter that outputs one symbol every unit interval (UI) from a data source is presented. The serial transmitter includes a serial output port that outputs one symbol every unit interval (UI) from a data source. The serial transmitter also includes a plurality of driver segments that jointly drive the serial output port. Each driver segment is configured to use one of N phases of a sampling clock to serialize and transmit data from the data source. Different sets of the driver segments are configured to use different phases of the sampling clock for serializing and transmitting data, the sampling clock being a half-rate clock having a period of two UI.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: May 7, 2019
    Inventors: Timothy O. Dickson, Mounir Meghelli
  • Patent number: 10284396
    Abstract: A symbol interference cancellation circuit may be provided. The symbol interference cancellation circuit may include an interference cancellation circuit configured for generating an interference-cancelled signal based on weight application signals, sampling output signals, and a clock signal.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: May 7, 2019
    Assignee: SK hynix Inc.
    Inventors: Jun Yong Song, Jeong Kyoum Kim, Hyung Soo Kim, Han Kyu Chi
  • Patent number: 10277290
    Abstract: Non-linear or linear precoding is used to create separate areas of coherence to different users. Limited feedback techniques may also be employed to send channel state information (CSI) from the plurality of users to the MU-MAS. In some embodiments, a codebook is built based on basis functions that span the radiated field of a transmit array. Additionally, the precoding may be continuously updated to create non-interfering areas of coherence to the users as the wireless channel changes due to Doppler effect. Moreover, the size of the areas of coherence may be dynamically adjusted depending on the distribution of users.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: April 30, 2019
    Assignee: REARDEN, LLC
    Inventors: Antonio Forenza, Stephen G. Perlman
  • Patent number: 10270508
    Abstract: Methods and systems for communication between a network base station and a remote device are disclosed. Disclosed methods include providing, at a base station coupled to the network, a modulated signal to mixers in a retro-directive metamaterial antenna, and receiving an RF transmission beam from the remote device, at the retro-directive metamaterial antenna, and radiating from the antenna a modulated retro-directed beam, using mixer products, directed toward the remote device.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: April 23, 2019
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Donna L. Polehn, Fred Weisbrod
  • Patent number: 10256932
    Abstract: Example communication systems and methods are described. In one implementation, a method receives a first chaotic sequence of a first temporal length, and a second chaotic sequence of a second temporal length. The method also receives a data symbol for communication to a destination. Based on the data symbol, the second chaotic sequence is temporally shifted and combined with the first chaotic sequence to generate a composite chaotic sequence. The first chaotic sequence functions as a reference chaotic sequence while the second chaotic sequence functions as a data-carrying auxiliary chaotic sequence.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: April 9, 2019
    Inventor: Ashitosh Swarup
  • Patent number: 10254974
    Abstract: A computing device and a method of operating the same are provided. The computing device includes a modem that communicates with an external device, a storage device, an application processor that accesses the storage device, and a switch that selectively provides one of a first communication path connecting the modem and the application processor and a second communication path connecting the modem and the storage device without passing through the application processor.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: April 9, 2019
    Inventors: Chang-Eun Choi, Su Hwa Yoo, Hwaseok Oh
  • Patent number: 10243593
    Abstract: A method for receiving a signal and for rejecting interference in a multichannel receiver, comprises the steps of: reception, transposition and discretization of the signal received on each of the channels of the receiver, so as to obtain a discretized multichannel signal, synchronization of the discretized multichannel signal, computation, on the basis of the discretized and synchronized multichannel signal, of a matrix {circumflex over (R)} of correlation of the total noise, computation, on the basis of the matrix {circumflex over (R)} of correlation of the total noise, of a vector w comprising amplitude phase weighting coefficients of a multichannel filter, and application, to the discretized and synchronized multichannel signal, of a multichannel filtering processing on the basis of the vector w, and then of a single-channel equalization processing to the filtered signal.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: March 26, 2019
    Assignee: THALES
    Inventor: François Pipon
  • Patent number: 10243518
    Abstract: The present disclosure is directed to a dual output path LNA that can be used to break the tradeoff between the output impedance and linearity of an LNA without the problems of a programmable output impedance LNA. In an embodiment, the dual output path architecture includes an LNA driving a low level of impedance in a low voltage gain path, thus achieving high linearity in the presence of large blockers, and driving a high level of impedance in a high voltage gain path to increase the LNA's voltage gain and minimize performance degradation due to a noisier, low power receiver front-end chain following the LNA. The present disclosure is further directed to a local oscillator (LO) offset circuit with low power and reduced spur generation.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: March 26, 2019
    Assignee: Avago Technologies International Sales Pte. Limited
    Inventors: Valentina Della Torre, Seema B. Anand, Howard Chi, Matteo Conta
  • Patent number: 10237000
    Abstract: A method for compensating phase shift is provided. The method includes sweeping a transmitter (TX) clock frequency over a frequency range and sampling resistance values at a receiver (RX) circuit while sweeping the TX clock frequency. A first frequency in the frequency range is determined which corresponds to a maximum resistance value sampled at the RX circuit. Using a look-up table (LUT), a phase adjust value is determined based on the first frequency. A phase of the TX clock is adjusted based on the phase adjust value.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: March 19, 2019
    Assignee: NXP B.V.
    Inventors: Martin Buchsbaum, Erich Merlin, Manuel Markus Figer
  • Patent number: 10230428
    Abstract: In accordance with one or more embodiments, an access point includes a communication interface having: a coupler configured to receive, via a transmission medium, first guided electromagnetic waves from a communication node of a radio distributed antenna system, wherein the first guided electromagnetic waves propagate along the transmission medium without requiring an electrical return path; and also a receiver configured to receive first data from the first guided electromagnetic waves. A data switch is configured to select first selected portions of the first data for transmission to at least one communication device in proximity to the access point.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: March 12, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Farhad Barzegar, Irwin Gerszberg, Giovanni Vannucci, Peter Wolniansky, Paul Shala Henry
  • Patent number: 10230353
    Abstract: In a nonlinear signal filtering system, a signal having a series of signal samples is filtered. The signal samples are affected by interactions with adjacent signal samples and nonlinear distortions. The system contains a series of alternating linear system elements and nonlinear system elements that are used for mitigation of distortion resulting from the nonlinear distortions with memory effects. The linear system elements can scale each signal sample in the series of signal samples by scaling parameters and sums a plurality of consecutive scaled signal samples, and the nonlinear system elements can transform the output of the linear system elements according to instantaneous nonlinear functions.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: March 12, 2019
    Assignee: Apsidon, Inc.
    Inventors: Nikola Alic, Eduardo Temprana Giraldo
  • Patent number: 10230439
    Abstract: A method for a channel coding of channel state information (CSI) in a wireless communication system according to an embodiment of the present invention may comprise the steps of: determining whether to perform an individual coding or a joint coding on a multi-CSI for a CSI process or a plurality of cells to be transmitted in one subframe; and performing a channel coding on an input bit for the multi-CSI according to the determined coding scheme, wherein whether to perform the individual coding or the joint coding may be determined according to a rule set for each individual CSI, for each physical uplink control channel (PUCCH) reporting type, or for each PUCCH reporting mode.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: March 12, 2019
    Inventors: Hyunho Lee, Daesung Hwang, Suckchel Yang
  • Patent number: 10224881
    Abstract: A method of linearizing a relationship between a signal to an amplifier and an output signal from the amplifier includes applying an inverse of a transfer function of the amplifier to the signal prior to presenting the signal as the amplifier input. The inverse transfer function is represented by a polynomial defined by a set of coefficients. The transmitter output signal is measured by the idle receiver in a time division duplex system. The output signal is filtered to isolate intermodulation products of a selected order and the peak power of the isolated intermodulation products is then estimated. An adaptive algorithm is applied in response to the estimate of the peak power to update the set of coefficients of the polynomial representing the inverse of the transfer function of the amplifier.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: March 5, 2019
    Assignee: Meteorcomm LLC
    Inventors: Arun Naidu, Jonathan Morarity
  • Patent number: 10224987
    Abstract: The present specification suggests a method and an apparatus regarding first and/or second signal fields used in a wireless LAN system. When multiple resource units are used for a specific band, a bit map field may be configured first by a resource unit having a first size, and for the remaining bands, allocation information may be configured by a resource unit having a second size. Also, a bit map field which indicates whether MU-MIMO technique is applied to the specific band or not can be further included. For example, the resource unit having the first size may comprise 242-RU and the resource unit having the second size may comprise 26-RU. A specific resource unit to which the MU-MIMO technique is applied may be 106-RU or more. When discontinuous channel bonding is an issue, additional changes can be made to the first/second signal fields of the present specification.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: March 5, 2019
    Inventors: Jinsoo Choi, Hangyu Cho, Wookbong Lee
  • Patent number: 10225128
    Abstract: A receiving system of the present disclosure includes: a plurality of demodulators; an add-on generating one stream based on an output from each of the demodulators; a selector selecting and outputting one among an output from one of the demodulators, namely the demodulator, and the one stream from the add-on; and a back-end processor generating an output for a display based on an output from the selector and the other demodulators, namely the demodulators. The selector selects an output from the demodulator in a single channel transmission mode, and selects the stream from the add-on in a multiple channel transmission mode.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: March 5, 2019
    Assignee: SOCIONEXT INC.
    Inventors: Hisateru Kobatake, Teruaki Hasegawa
  • Patent number: 10218546
    Abstract: A digital transmission system includes a transmitter configured to transmit an orthogonal frequency division multiplexing (OFDM) signal along a signal path, a receiver for receiving the OFDM signal from the transmitter and extracting OFDM symbols from the received OFDM signal, and a diagnostic unit configured to (i) demodulate the received OFDM signal to create an ideal signal, (ii) compare the received OFDM signal with the ideal signal to calculate an error signal, (iii) cross-correlate the error signal with the ideal signal, and (iv) determine a level nonlinear distortion from one of the transmitter and the signal path based on the correlation of the error signal with the ideal signal.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: February 26, 2019
    Assignee: Cable Television Laboratories, Inc.
    Inventor: Thomas H. Williams