Patents by Inventor Chien-Heng Wong

Chien-Heng Wong 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).

  • Patent number: 11962301
    Abstract: Technologies for low jitter and low power ring oscillators with multi-phase signal reassembly are described. A ring oscillator circuit includes a ring oscillator with a set of M delay stages, each stage outputs a phase signal, where M is a positive integer greater than one. The ring oscillator circuit includes a phase selector circuit coupled to the ring oscillator. The phase selector circuit can receive M phase signals from the ring oscillator and generate N phase signals based on the M phase signals, where N is a positive integer less than M.
    Type: Grant
    Filed: August 18, 2022
    Date of Patent: April 16, 2024
    Assignee: Nvidia Corporation
    Inventors: Chun-Ju Shen, Chien-Heng Wong, Ying Wei
  • Publication number: 20240063778
    Abstract: Technologies for low jitter and low power ring oscillators with multi-phase signal reassembly are described. A ring oscillator circuit includes a ring oscillator with a set of M delay stages, each stage outputs a phase signal, where M is a positive integer greater than one. The ring oscillator circuit includes a phase selector circuit coupled to the ring oscillator. The phase selector circuit can receive M phase signals from the ring oscillator and generate N phase signals based on the M phase signals, where N is a positive integer less than M.
    Type: Application
    Filed: August 18, 2022
    Publication date: February 22, 2024
    Inventors: Chun-Ju Shen, Chien-Heng Wong, Ying Wei
  • Patent number: 8831151
    Abstract: Method and associated apparatus of data extraction, including: sampling a signal and obtaining a plurality of sampled values, providing a reference sample quantity when the sampled values transit, providing a unit bit sample quantity according to the reference sample quantity, and corresponding each of the sampled values to each data bit of the signal according to the unit bit sample quantity.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 9, 2014
    Assignee: Faraday Technology Corp.
    Inventors: Yen-Yin Huang, Chien-Heng Wong, Ming-Shih Yu
  • Patent number: 8787424
    Abstract: A spread spectrum transmission circuit includes a phase locked loop composed of a filter. The phase locked loop generates a series of incremental control signals and decreasing control signals based on the frequency difference and phase difference between a reference clock signal and a feedback signal. The circuit further has a frequency locked loop an amplitude locked loop, a digital-analog converter, an injection current source, an extraction current source, a multiplexer is connected to the locked phase loop and a rail-to-rail digital signal generator having an input connected to the multiplexer and an output connected to inputs of the locked frequency loop and the locked amplitude loop.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 22, 2014
    Assignee: National Taiwan University
    Inventors: Tai-Cheng Lee, Chien-Heng Wong
  • Publication number: 20140146933
    Abstract: A spread spectrum transmission circuit includes a phase locked loop composed of a filter. The phase locked loop generates a series of incremental control signals and decreasing control signals based on the frequency difference and phase difference between a reference clock signal and a feedback signal. The circuit further has a frequency locked loop an amplitude locked loop, a digital-analog converter, an injection current source, an extraction current source, a multiplexer is connected to the locked phase loop and a rail-to-rail digital signal generator having an input connected to the multiplexer and an output connected to inputs of the locked frequency loop and the locked amplitude loop.
    Type: Application
    Filed: June 26, 2013
    Publication date: May 29, 2014
    Inventors: Tai-Cheng Lee, Chien-Heng Wong
  • Publication number: 20130039450
    Abstract: Method and associated apparatus of data extraction, including: sampling a signal and obtaining a plurality of sampled values, providing a reference sample quantity when the sampled values transit, providing a unit bit sample quantity according to the reference sample quantity, and corresponding each of the sampled values to each data bit of the signal according to the unit bit sample quantity.
    Type: Application
    Filed: June 28, 2012
    Publication date: February 14, 2013
    Applicant: FARADAY TECHNOLOGY CORPORATION
    Inventors: Yen-Yin Huang, Chien-Heng Wong, Ming-Shih Yu