Patents by Inventor Kevin Zheng

Kevin Zheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus, system, and method for configuring a serializer/deserializer based on evaluation of a probe signal
    Patent number: 9917663
    Abstract: An apparatus, system, and method are provided for configuring a serializer/deserializer (SerDes) based on evaluation of a probe signal. Included is circuitry configured to detect at least one of a probe signal or a reflection resulting from the probe signal. Such probe signal and/or reflection is evaluated such that at least one configurable aspect of the apparatus may be set, based on the evaluation.
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: March 13, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hiroshi Takatori, Kevin Zheng, Zhan Duan
  • APPARATUS, SYSTEM, AND METHOD FOR CONFIGURING A SERIALIZER/DESERIALIZER BASED ON EVALUATION OF A PROBE SIGNAL
    Publication number: 20180048401
    Abstract: An apparatus, system, and method are provided for configuring a serializer/deserializer (SerDes) based on evaluation of a probe signal. Included is circuitry configured to detect at least one of a probe signal or a reflection resulting from the probe signal. Such probe signal and/or reflection is evaluated such that at least one configurable aspect of the apparatus may be set, based on the evaluation.
    Type: Application
    Filed: August 9, 2016
    Publication date: February 15, 2018
    Inventors: Hiroshi Takatori, Kevin Zheng, Zhan Duan
  • CTLE Gear Shifting to Enable CDR Frequency Lock In Wired Communication
    Publication number: 20170134190
    Abstract: A Continuous Time Linear Equalizer (CTLE) and a method of operating a CTLE in a receiver for a Pulse Amplitude Modulation (PAM) signal are disclosed. The method includes initiating equalization using an initial equalization setting that is optimized to meet a first objective and responsive to a determination, shifting to a final equalization setting that is optimized to meet a second objective.
    Type: Application
    Filed: January 26, 2017
    Publication date: May 11, 2017
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Wenting Zhou, Ali Kiaei, Ahmad Bahai
  • CTLE gear shifting to enable CDR frequency lock in wired communication
    Patent number: 9614659
    Abstract: A Continuous Time Linear Equalizer (CTLE) and a method of operating a CTLE in a receiver for a Pulse Amplitude Modulation (PAM) signal are disclosed. The method includes initiating equalization using an initial equalization setting that is optimized to meet a first objective and responsive to a determination, shifting to a final equalization setting that is optimized to meet a second objective.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 4, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Wenting Zhou, Ali Kiaei, Ahmad Bahai
  • IIR DFE updating gain and time constants using LMS equations
    Patent number: 9479366
    Abstract: A method for adapting a mixed signal Infinite Impulse Response (IIR) Decision Feedback Equalizer (DFE) using pivot taps and monitor taps is disclosed. The method includes, for a given IIR path for a received signal, updating gain of the given IIR path using a respective pivot tap error-data correlation with a first Least Mean Square (LMS) update equation; and updating a time constant of the given IIR path using a respective monitor tap error-data correlation with a second LMS update equation.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: October 25, 2016
    Assignee: Texas Instruments Incorporated
    Inventors: Kevin Zheng, Reza Hoshyar, Nirmal Warke, Ali Kiaei, Ahmad Bahai
  • Gear Shifting From Binary Phase Detector to PAM Phase Detector in CDR Architecture
    Publication number: 20160294537
    Abstract: A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 6, 2016
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Ali Kiaei, Ahmad Bahai
  • CTLE GEAR SHIFTING TO ENABLE CDR FREQUENCY LOCK IN WIRED COMMUNICATION
    Publication number: 20160218899
    Abstract: A Continuous Time Linear Equalizer (CTLE) and a method of operating a CTLE in a receiver for a Pulse Amplitude Modulation (PAM) signal are disclosed. The method includes initiating equalization using an initial equalization setting that is optimized to meet a first objective and responsive to a determination, shifting to a final equalization setting that is optimized to meet a second objective.
    Type: Application
    Filed: April 14, 2015
    Publication date: July 28, 2016
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Wenting Zhou, Ali Kiaei, Ahmad Bahai
  • IIR DFE UPDATING GAIN AND TIME CONSTANTS USING LMS EQUATIONS
    Publication number: 20160218889
    Abstract: A method for adapting a mixed signal Infinite Impulse Response (IIR) Decision Feedback Equalizer (DFE) using pivot taps and monitor taps is disclosed. The method includes, for a given IIR path for a received signal, updating gain of the given IIR path using a respective pivot tap error-data correlation with a first Least Mean Square (LMS) update equation; and updating a time constant of the given IIR path using a respective monitor tap error-data correlation with a second LMS update equation.
    Type: Application
    Filed: April 14, 2015
    Publication date: July 28, 2016
    Inventors: Kevin Zheng, Reza Hoshyar, Nirmal Warke, Ali Kiaei, Ahmad Bahai
  • GEAR SHIFTING FROM BINARY PHASE DETECTOR TO PAM PHASE DETECTOR IN CDR ARCHITECTURE
    Publication number: 20160218859
    Abstract: A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.
    Type: Application
    Filed: April 14, 2015
    Publication date: July 28, 2016
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Ali Kiaei, Ahmad Bahai
  • Gear shifting from binary phase detector to PAM phase detector in CDR architecture
    Patent number: 9397824
    Abstract: A device and method for providing clock data recovery (CDR) in a receiver is disclosed. The method comprises receiving a Phase Amplitude Modulation (PAM) signal; on startup, using a non-return-to-zero (NRZ)-based phase frequency detector (PFD) to acquire signal frequency from the received PAM signal; and responsive to a determination, switching to a PAM phase detector (PD) for steady state operation.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: July 19, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Reza Hoshyar, Kevin Zheng, Nirmal Warke, Ali Kiaei, Ahmad Bahai