Patents Examined by David B. Lugo
  • Calibration device
    Patent number: 9716557
    Abstract: A calibration device includes reference signal normalizing units 5-1 to 5-M that set, as a reference signal, a frequency domain signal being associated with either one 2 of reception antennas and being included in frequency domain signals obtained by conversions made by Fourier transform units 4-1 to 4-M, and divide the frequency domain signals after the conversion made by the Fourier transform units 4-1 to 4-M by the reference signal, thereby normalizing the frequency domain signals, and reference frequency normalizing units 6-1 to 6-M that normalize the frequency domain signals normalized by the reference signal normalizing units 5-1 to 5-M by using a signal having a reference frequency included in the frequency domain signals.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: July 25, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tadashi Oshima, Toshio Wakayama
  • Method and apparatus for transmitting signal in wireless communication system
    Patent number: 9713124
    Abstract: One embodiment of the present invention relates to a method for transmitting a device-to-device (D2D) signal from a first user equipment in a wireless communication system, wherein the signal transmission method comprises the steps of: deciding a physical resource block through frequency-hopping; and mapping data onto the physical resource block that is decided, wherein a hopping offset value common to a first cell and a second cell is used for the frequency-hopping, when a second user equipment for receiving the signal belongs to the second cell, which is not the first cell to which the first user equipment belongs.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: July 18, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Hyukjin Chae, Hanbyul Seo, Hakseong Kim
  • Pipeline multiplexer loop architecture for decision feedback equalizer circuits
    Patent number: 9692618
    Abstract: Circuits, devices, methods for decision feedback equalization are described. A decision feedback circuit can include L N-tap decision feedback equalizer (DFE) branches. The L N-tap DFE branches can include K unrolled DFE branches, and L?K unfolded DFE branches. Each DFE branch can include a pre-computation stage configured to generate a set of tap-adjusted inputs, each tap-adjusted input corresponding to a possible value for at least one previous output of the same DFE branch. Each unrolled DFE branch can include a multiplexer circuit having selection lines for selecting from the set of tap-adjusted inputs for the unrolled DFE branch, the selection lines being connected to outputs of other DFE branches. Each unfolded DFE branch can include a multiplexer circuit configured to select at least one output from the set of tap-adjusted inputs based on tap-adjusted inputs from other DFE branches.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 27, 2017
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Huong Ho
  • Wireless communication device, integrated circuitry, and wireless communication method
    Patent number: 9686109
    Abstract: A wireless communication device has an analog control loop circuitry that generates an analog control signal to adjust a phase of a voltage controlled oscillation signal, in accordance with a phase of a reception signal, a digital control loop circuitry that generates a digital control signal having a frequency determined by a frequency of a reference signal and a predetermined frequency setting code signal and having a phase opposite to a phase of the analog control signal, a voltage controlled oscillator that generates the voltage controlled oscillation signal, on the basis of the analog control signal and the digital control signal, and a data slicer that generates a digital signal obtained by digital demodulation of the reception signal, on the basis of a comparison result of the digital control signal and a predetermined threshold value.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: June 20, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihide Sai, Masanori Furuta, Tetsuro Itakura
  • Body-biased slicer design for predictive decision feedback equalizers
    Patent number: 9674008
    Abstract: A predictive decision feedback equalizer using body bias of one or more field effect transistors (FETs) to provide an offset for a predictive tap. In one embodiment, a predictive tap of the predictive decision feedback equalizer includes a differential amplifier composed of two FETs in a differential amplifier configuration, and the body bias of one or both FETs is controlled to provide an offset in the differential amplifier. In one embodiment a current DAC driving a DAC resistor is used to provide the body bias voltage, and a feedback circuit, including a replica circuit forming the maximum possible DAC output voltage, is used to control the bias of the current sources of the current DAC.
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mohammad Hekmat, Amir Amirkhany
  • Radio unit and method performed by a radio unit operable in a base station system of a wireless communication network for reducing interference at the radio unit
    Patent number: 9660694
    Abstract: Disclosed is a method performed by a radio unit (10) operable in a base station system of a wireless communication network, for reducing interference at the RU. The base station system comprises a baseband unit (30) the radio unit (10) and a plurality of radio heads (21-26) wherein the radio unit is connected to the plurality of radio heads via a number of metallic conductors (40), and wherein a signal is to be communicated to the radio unit at a first frequency range over one of the number of metallic conductors from one of the plurality of radio heads.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: May 23, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Per-Erik Eriksson, Miguel Berg, Chenguang Lu, Elmar Trojer
  • Wireless communication device, integrated circuitry, and wireless communication method
    Patent number: 9654322
    Abstract: A wireless communication device has an analog control loop circuitry that generates an analog control signal to adjust a phase of a voltage controlled oscillation signal, in accordance with a phase of a reception signal, a digital control loop circuitry that generates a digital control signal having a frequency determined by a frequency of a reference signal and a predetermined frequency setting code signal and having a phase opposite to a phase of the analog control signal, a voltage controlled oscillator that generates the voltage controlled oscillation signal, on the basis of the analog control signal and the digital control signal, and a data slicer that generates a digital signal obtained by digital demodulation of the reception signal, on the basis of a comparison result of the digital control signal and a predetermined threshold value.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: May 16, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Akihide Sai, Masanori Furuta, Tetsuro Itakura
  • Nonlinear compensating apparatus and method, transmitter and communication system
    Patent number: 9654156
    Abstract: A nonlinear compensating apparatus and method, a transmitter and a communication system are provided. The apparatus includes a preprocessor configured to preprocess a transmitted signal according to a pre-obtained preprocessing coefficient and a predistorter configured to perform predistortion for the preprocessed signal, and a result of comparison of a characteristic parameter of the signal that has been preprocessed and then predistorted with that of the transmitted signal satisfies a predetermined condition. By preprocessing the transmitted signal at the transmitter end, the embodiments of the present disclosure may perform efficient nonlinear compensation only needing to measure at the transmitter end and without needing to perform many times of measurement at the receiver end, and may lower complexity of circuits of the communication system and complexity of calculation.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 16, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Bo Liu, Weizhen Yan, Lei Li
  • Beam forming using a dual polarized antenna arrangement
    Patent number: 9654264
    Abstract: There is provided beam forming using a dual polarized antenna array. A first set of reference signals for acquiring channel state information is alternatingly transmitted using a dual polarized antenna array in a first polarization direction and in a second polarization direction, respectively. Quantized channel information based on the first set of reference signals is received from a radio transceiver device. Angular information relating to the radio transceiver device is determined based on the quantized channel information. Transmission beams for transmission to the radio transceiver device are determined. The transmission comprises precoder vectors and have relative orthogonal polarizations for beam forming according to the angular information.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: May 16, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Fredrik Athley, Sven Petersson
  • Apparatus for generation of corrected vector wideband RF signals
    Patent number: 9621286
    Abstract: A signal generation system can include an input source configured to provide an input radio frequency (RF) signal, a correction filter calculation (CFC) block configured to determine correction filter parameters, and an automatic level control (ALC) loop configured to provide ALC loop information to the CFC block. The correction filter parameters may be determined based at least in part on the ALC information. The system can also include a predistortion field programmable gate array (FPGA) configured to apply a correction filter to the input RF signal, wherein the correction filter is based at least in part on the correction filter parameters, and an RF output configured to provide an RF output signal.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: April 11, 2017
    Assignee: Tektronix, Inc.
    Inventor: Jeffrey D. Earls
  • Carrier communication method and system based on charging-discharging of electric vehicle and carrier device
    Patent number: 9604545
    Abstract: A carrier communication method and system based on charging-discharging of an electric vehicle and a carrier device are disclosed. The carrier communication method comprises: determining whether a carrier signal from a peripheral apparatus is detected at an interface harness and if yes, determining whether the carrier signal is correct, when the electric vehicle is powered on to start; when the electric vehicle detects the carrier signal and the carrier signal is correct, receiving the carrier signal via the interface harness; and performing a coupling and filtering on the carrier signal to convert the carrier signal into a standard carrier signal and demodulating the standard carrier signal into a digital signal to obtain information about the peripheral apparatus.
    Type: Grant
    Filed: December 31, 2012
    Date of Patent: March 28, 2017
    Assignees: Shenzhen BYD Auto R&D Company Limited, BYD Company Limited
    Inventors: Xianhong Ma, Weiqun Wang
  • Type 1 and type 2 hopping for device-to-device communications
    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
  • Signal detection in a communication system
    Patent number: 9596119
    Abstract: There is provided a computer-implemented method of estimating transmitted signals in a communication system, the signals being transmitted by a transmitter to a receiver over a communication channel having a channel response, the method comprising estimating the transmitted signals based on generated trial sequences minimizing the channel response between adjacent received signals. There is also provided a receiver, a signal detector device and a communication system adapted to estimated transmitted signals in a communication system by generating trial sequences and determining the generated trial sequences minimizing the channel response between adjacent received signals. The present invention is particularly adapted for OFDM communication systems.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: March 14, 2017
    Assignee: KHALIFA UNIVERSITY OF SCIENCE, TECHNOLOGY & RESEARCH (KUSTAR)
    Inventor: Arafat Jamil Al-Dweik
  • Information processing method and electronic device which selectively operates a target antenna
    Patent number: 9577732
    Abstract: One embodiment provides a method, including: displaying a plurality of contents via a display screen of a first electronic device; determining a subset of a plurality of antennas of the first electronic device based on positions of the antennas relative to the display screen, wherein said subset of antennas corresponds with respective contents as displayed via the display screen of the first electronic device; activating the subset of the antennas of the first electronic device to determine a target antenna from said subset of the antennas that is closest to a second electronic device arranged with respect to the display screen of the first electronic device; and transmitting a target content from said contents as displayed from the first electronic device to the second electronic device, wherein the target content corresponds with the target antenna. Other aspects are described and claimed.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: February 21, 2017
    Assignee: Lenovo (Beijing) Limited
    Inventor: Xue Xia Li
  • Diversity receiver front end system with impedance matching components
    Patent number: 9571037
    Abstract: Diversity receiver front end system with impedance matching components. A receiving system can include a controller configured to selectively activate one or more of a plurality of paths between an input of the receiving system and an output of the receiving system. The receiving system can further include a plurality of amplifiers. Each one of the plurality of amplifiers can be disposed along a corresponding one of the plurality of paths and can be configured to amplify a signal received at the amplifier. The receiving system can further include a plurality of impedance matching components. Each one of the plurality of impedance matching components can be disposed along a corresponding one of the plurality of paths and can be configured to reduce at least one of an out-of-band noise figure or an out-of-band gain of the one of the plurality of paths.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: February 14, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Stephane Richard Marie Wloczysiak
  • Apparatuses and methods to delay memory commands and clock signals
    Patent number: 9570135
    Abstract: An example delay circuit may include a delay block configured to receive a command signal and/or a bank address signal, a first clock signal, and a second clock signal and further configured to add an intrinsic delay to the command signal or the bank address signal and add a forward path delay greater than the intrinsic delay to the first and second clock signals.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 14, 2017
    Assignee: Micron Technology, Inc.
    Inventors: Huy T. Vo, Yantao Ma
  • Demodulation device
    Patent number: 9553751
    Abstract: A demodulation device for demodulating a base signal from a composite signal, which is composed of a carrier wave and a sensor modulation signal of the base signal. The demodulation device determines a difference between the composite signal of a former-half period and the composite signal of a latter-half period to be a pre-correction base signal. The former-half period is a one-half period of a sampling period starting at one of a local maximum and a local minimum of the carrier wave. The latter-half period follows the former-half period. The demodulation device determines a reference level from the composite signal and determines a signal level of a post-correction base signal based on a ratio between a signal level of the pre-correction base signal and the reference level.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: January 24, 2017
    Assignee: DENSO CORPORATION
    Inventors: Takamoto Watanabe, Shigenori Yamauchi
  • Systems and methods for switching quality factors during inductively coupled communications
    Patent number: 9553747
    Abstract: A method for inductively coupled communications is described. The method includes applying a high loaded quality factor to a matching network of an active transmitter during an amplitude modulation (AM) high state. The method also includes switching to a low loaded quality factor for the matching network during an AM low state.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 24, 2017
    Assignee: QUALCOMM Incorporated
    Inventor: Prasannasarathy Ramakrishnan
  • System and method for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) offset quadrature amplitude modulation (OQAM)
    Patent number: 9544032
    Abstract: In one embodiment, a method for transmitting data in a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM)-offset quadrature amplitude modulation (OQAM) system includes selecting a precoding matrix in accordance with a projection of the precoding matrix on a precoding space and generating a precoded modulated pulse shape by applying the precoding matrix to a data vector and a pulse shape. The method also includes transmitting, by a first device to a second device, the precoded modulated pulse shape.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: January 10, 2017
    Assignee: Huawei Technologies Canada Co., Ltd.
    Inventors: Ioannis Psaromiligkos, Ivan Tinjaca, Mohammad Javad Abdoli
  • System for relayed data transmission in a high-speed serial link
    Patent number: 9536495
    Abstract: A system for transmitting data from a timing controller (TCON) to several source driver integrated circuits (SICs) in a display. The system is suitable for use either with a high data rate or a low data rate to each of the SICs. The TCON provides a serial data stream to a SIC, which either uses all of the received data, if it requires high rate data, or relays a portion, e.g., half, of the data to another SIC, which then does not require a separate direct connection to the TCON.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: January 3, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Amir Amirkhany, Wei Xiong