Patents Examined by Khanh C. Tran
  • Patent number: 11005525
    Abstract: A transmitter stores mappings of distinct values of an information signal to corresponding ones of distinct combinations of K chirps taken from M chirps that are different from each other, such that each of the distinct values is mapped to a corresponding one of the distinct combinations of K chirps. The transmitter receives a distinct value among the distinct values of the information signal. The transmitter selects, based on the mappings, a distinct combination of K chirps among the distinct combinations of K chirps that is mapped to the distinct value. The transmitter sums the K chirps of the distinct combination of K chirps to produce a symbol that represents the distinct value. The transmitter modulates the symbol to produce a modulated symbol, and transmits the modulated symbol. A receiver receives a modulated symbol that conveys a distinct value, and recovers the distinct value using stored mappings.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: May 11, 2021
    Assignee: CISCO SYSTEMS CANADA CO.
    Inventors: Muhammad Hanif, Ha Hoang Nguyen
  • Patent number: 11005693
    Abstract: A cyclic prefix is configured for transmissions on a cellular network using a Radio Access Technology based on Orthogonal Frequency Division Multiplexing (OFDM). At a User Equipment (UE) of the cellular network, information is determined for calculating a delay spread for transmission symbols from a base station of the cellular network to the UE. A cyclic prefix for the transmissions is identified based on the determined information. A delay spread can be established from received transmission symbols by: determining a coherence bandwidth based on whether a channel coefficient for each of the transmission symbols varies more than a predefined threshold, the delay spread being established using the determined coherence bandwidth; and/or determining a relationship between a cyclic prefix associated with the transmission symbols and a signal-to-interference-plus-noise ratio, SINR, for the received transmission symbols, the delay spread being established using the determined relationship.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: May 11, 2021
    Assignee: VODAFONE IP LICENSING LIMITED
    Inventors: Razieh Razavi, Timothy Frost
  • Patent number: 10999013
    Abstract: Transmitter having multiple transmit antennas for transmitting two or more streams. The transmitter comprises an encoding circuitry configured to perform space-time block encoding to obtain for at least one of the two or more streams a pair of space-time encoded streams. Further, a mapping circuitry is configured to assign each stream of each pair of space-time encoded streams to a transmit antenna of the multiple transmit antennas for wirelessly transmitting the two or more streams. Finally, a control circuitry is configured to adjust one or more parameters of the mapping circuitry in order to achieve a defined channel characteristic between the transmitter and a receiver.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: May 4, 2021
    Assignee: SONY CORPORATION
    Inventors: Thomas Handte, Dana Ciochina, Felix Fellhauer
  • Patent number: 10992447
    Abstract: A high-speed interface apparatus and method of correcting skew in the apparatus are provided. A high-speed transmitter includes a transmission D-PHY module that generates and transmits a clock signal through a clock channel, generates a deskew synchronous code and test data in response to a deskew request signal, transmits the deskew synchronous code followed by the test data through a data channel, and transmits a normal synchronous code followed by normal data through the data channel in normal mode.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: April 27, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Han Soo Lee, Sung Jun Kim, Chae Ryung Kim, Dong Uk Park, Youn Woong Chung, Jung Myung Choi, Han Kyul Lim, Gyeong Han Cha
  • Patent number: 10985824
    Abstract: A channel state information feedback method includes: generating, by a transmit-end device, codebook indication information of K transport layers, where K is an integer greater than or equal to 1; and for each of at least one of the K transport layers, the codebook indication information includes narrowband superposition coefficients of N sub-bands of the layer, where a quantity of the narrowband superposition coefficients of the N sub-bands is less than R(L?1)*N, N is an integer greater than or equal to 2, R is a quantity of polarization directions and R is an integer greater than or equal to 1, and L is a quantity of pieces of beam information used by the K transport layers and L is an integer greater than or equal to 2; and sending, by the transmit-end device, the codebook indication information.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: April 20, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Huangping Jin, Peng Jiang, Wei Han, Peng Shang
  • Patent number: 10979122
    Abstract: A method of operating a wireless communication apparatus, the method comprising: estimating a first channel using a sounding packet received from a base station to obtain an estimated first channel, the sounding packet including a plurality of first streams, generating a diagonal matrix and a beam steering matrix by performing singular value decomposition (SVD) on the estimated first channel, generating state information of a plurality of second channels respectively corresponding to a plurality of second streams generated by applying the beam steering matrix to the plurality of first streams using the diagonal matrix, and transmitting beamforming feedback based on the state information to the base station.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: April 13, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eunsung Jeon, Wookbong Lee, Sungsoo Kim, Joonsuk Kim, Minki Ahn
  • Patent number: 10972146
    Abstract: Methods, apparatus, and processor-readable storage media for generating a frequency hopping arrangement are provided herein. An example computer-implemented method includes determining a starting frequency channel for a frequency hopping arrangement to be used in a communication session by a designated group of devices; calculating a frequency channel step value based at least in part on a predetermined required minimum number of frequency channels and the number of devices in the designated group; and selecting the frequency channel values to be used in the communication session by iterating through frequency channel values for the useable frequency channels at intervals of a random frequency channel selection offset value until a number of frequency channel values equal to the frequency channel step value are selected.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: April 6, 2021
    Assignee: Lynq Technologies, Inc.
    Inventors: Abhishek Vishwakarma, Justin Lange, John M. De Cristofaro, Thomas Mwakibinga, Shane Wicks
  • Patent number: 10965441
    Abstract: A frame trigger recreation method is provided. Said frame trigger recreation method comprises the steps of generating a periodic trigger on the basis of a receiver clock with at least one period adjustment and at least one offset based on a difference between the receiver clock and a transmitter clock.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 30, 2021
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Florian Ramian, Florian Lang
  • Patent number: 10965353
    Abstract: A transmission method simultaneously transmitting a first modulated signal and a second modulated signal at a common frequency performs precoding on both signals using a fixed precoding matrix and regularly changes the phase of at least one of the signals, thereby improving received data signal quality for a reception device.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: March 30, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10965354
    Abstract: Provided is a precoding method for generating, from a plurality of baseband signals, a plurality of precoded signals to be transmitted over the same frequency bandwidth at the same time, including the steps of selecting a matrix F[i] from among N matrices, which define precoding performed on the plurality of baseband signals, while switching between the N matrices, i being an integer from 0 to N?1, and N being an integer at least two, generating a first precoded signal z1 and a second precoded signal z2, generating a first encoded block and a second encoded block using a predetermined error correction block encoding method, generating a baseband signal with M symbols from the first encoded block and a baseband signal with M symbols the second encoded block, and precoding a combination of the generated baseband signals to generate a precoded signal having M slots.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: March 30, 2021
    Assignee: SUN PATENT TRUST
    Inventors: Yutaka Murakami, Tomohiro Kimura, Mikihiro Ouchi
  • Patent number: 10944684
    Abstract: A scheduling device for managing a packet queue of a communication gateway includes a receiving portion configured to receive data packets according to at least one communication protocol, a processor, and classification module configured to separate the received data packets into a first traffic queue and a second traffic queue separate from the first traffic queue. The first traffic queue includes a low latency service flow classified to have strict priority. The second traffic queue includes a primary service flow classified as having a classic priority. The classification module separates the received data packets so that those with a first indicator are sent to the first traffic queue and those without the first indicator are sent to the second traffic queue.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: March 9, 2021
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Gregory Charles White, Steve Glennon, Karthik Sundaresan, Luis Alberto Campos, Robert J. Briscoe
  • Patent number: 10938426
    Abstract: Examples described herein include methods, devices, and systems which may compensate input data for non-linear power amplifier noise to generate compensated input data. In compensating the noise, during an uplink transmission time interval (TTI), a switch path is activated to provide amplified input data to a receiver stage including a coefficient calculator. The coefficient calculator may calculate an error representative of the noise based partly on the input signal to be transmitted and a feedback signal to generate coefficient data associated with the power amplifier noise. The feedback signal is provided, after processing through the receiver, to a coefficient calculator. During an uplink TTI, the amplified input data may also be transmitted as the RF wireless transmission via an RF antenna. During a downlink TTI, the switch path may be deactivated and the receiver stage may receive an additional RF wireless transmission to be processed in the receiver stage.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: March 2, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Fa-Long Luo, Jeremy Chritz, Jaime Cummins, Tamara Schmitz
  • Patent number: 10939481
    Abstract: There is provided a fast paging procedure in which a master device repeatedly sends the paging message to a slave device using predetermined channel frequencies, wherein a selection of the predetermined channel frequencies is not calculated or predicted from the slave's Bluetooth device address. When the master device receives a slave page response message at one frequency among the predetermined channel frequencies, the master device transmits an FHS packet to the slave device at the same frequency in which the slave page response message was received.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: March 2, 2021
    Assignee: AUDIOWISE TECHNOLOGY INC.
    Inventors: Hsinhsiang Liu, Chih-Wei Sung, Jing-Syuan Jia, Kuang-Hu Huang
  • Patent number: 10924159
    Abstract: The invention relates to a household electrical system, for example for ironing, comprising an appliance, such as an iron, connected to a base by a cord made up of at least: —a first electrical line formed by a first set of conductive wires for high-voltage (HV) transmission of a heating power, —a second electrical line formed by a second set of conductive wires for the low-voltage (LV) power supply of an electronic board arranged in the appliance, —a third electrical line for providing two-way data transmission between the base and the appliance; characterised in that the third electrical line is formed by the second set of conductive wires; the system also comprising a modulator suitable for modulating the voltage and/or the current circulating in the second set of conductive wires, so as to activate the second electrical line and the third electrical line or the third electrical line exclusively.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: February 16, 2021
    Assignee: LauraStar S.A.
    Inventors: Christophe Monnerat, Sylvain Decastel, Laurent Seydoux
  • Patent number: 10917134
    Abstract: A system for the distribution of RFID signals to a remote antenna or a remote antenna network comprising: a central control module to generate signals and control the protocol operations; cable, in particular twisted pair cable, connecting the central module to one or more antenna subsystems carrying substantially baseband representations of the reader to tag modulation and tag to reader modulation.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: February 9, 2021
    Inventors: Michael Crisp, Ian H. White, Richard Penty, Zhe Fu, Sithamparanathan Sabesan
  • Patent number: 10917151
    Abstract: An electronic device at a base station end includes a processing circuit, the processing circuit being configured to: configure, in response to request signalling from a user equipment, an aperiodic beam-forming reference signal relevant to a first beam group for the user equipment, wherein the first beam group is determined by a base station according to channel state information periodically fed back by the user equipment; generate downlink control information, so as to indicate that the user equipment feeds back beam selection information according to the aperiodic beam-forming reference signal; determine, according to the beam selection information, one or a plurality of candidate beams and one or a plurality of corresponding second pre-coding codebooks; and determine an effective pre-coding codebook based on the one or multiple second pre-coding codebooks.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: February 9, 2021
    Assignee: SONY CORPORATION
    Inventors: Jin Xu, Cheng Gao, Siqi Liu, Chaonan He, Jianfei Cao
  • Patent number: 10911162
    Abstract: A MIMO transceiver may include a communication chain configured to generate a signal at a first frequency. The communication chain may include a pre-distorter configured to accept pre-distortion parameters to pre-distort signals. The communication chain may include a PA to amplify the signals. The MIMO transceiver may include a DPD chain configured to receive the signal at the first frequency. The DPD chain may include a data converter to sample the signal using a sampling rate based on a baseband frequency. The data converter may be configured to generate a sample signal based on the sampling of the signal. The DPD chain may include a buffer configured to buffer the sample signal. The MIMO transceiver may include a DPD circuit configured to calibrate the pre-distortion parameters calibrated based on the buffered sample signal to compensate for non-linearity in amplification provided by the PA of the communication chain.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: February 2, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Abhishek Kumar Agrawal, Hossein Dehghan
  • Patent number: 10911057
    Abstract: A digital clock generator for a digital clock domain interfaced to another clock domain through a FIFO, includes division selector circuitry to provide an input randomizing sequence of clock division factors, selected from a defined set of clock division factors corresponding to a target average clock division, and division arbitration circuitry to generate a drift-corrected randomizing sequence of clock division factors, based at least in part on the input randomizing sequence of clock division factors, and an accumulated drift correction signal. A clock drift control loop generates the accumulated drift correction signal, based at least in part on an accumulated clock drift relative to the target average clock division. Clock generation can be based on randomized division with the drift-corrected randomizing sequence of clock division factors. The drift-corrected randomizing sequence of clock division factors can be generated so that clock drift is bounded based on a FIFO depth.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: February 2, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sarma Sundareswara Gunturi, Jawaharlal Tangudu, Sundarrajan Rangachari
  • Patent number: 10904054
    Abstract: This application discloses a communications chip structure, including: a channel selection module, configured to receive an input signal, where the input signal is a signal of a preset narrow bandwidth span or a signal of a preset wide bandwidth span; and a digital baseband module, configured to control the channel selection module to select a first sampling and quantification channel when the input signal is a signal of the preset narrow bandwidth span, or control the channel selection module to select a second sampling and quantification channel when the input signal is a signal of the preset wide bandwidth span. The channel selection module is further configured to send the input signal to the first sampling and quantification channel or the second sampling and quantification channel for sampling and quantification.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: January 26, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Mingjun Fan, Jianhua Zheng, Daiping Tang
  • Patent number: 10892796
    Abstract: A log periodic antenna is used in a communication system that utilizes multiple channels to drive distinct frequency sub-bands within an ultra-wide band. The driving elements are active and specifically tuned to the operating sub-band of the channel. Each driving element may be synchronized via a single local oscillator. Driving element includes a modem and analog-to-digital converters to digitize a portion of the signal intended for the sub-band within the channel. Actively driven log periodic antennas can jam an ultra-wide band of the spectrum.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: January 12, 2021
    Assignee: Rockwell Collins, Inc.
    Inventors: James B. West, Vadim Olen