Patents by Inventor Wen-Chung (Stewart) Wu

Wen-Chung (Stewart) Wu 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).

  • Methods and circuits for optimal equalization
    Patent number: 7376179
    Abstract: Methods and circuits utilizing a two stage adaptation algorithm to determine the optimal code for an equalizer to compensate a received signal is disclosed. In the first stage, a coarse tuning algorithm is used to choose a range of codes based on the amplitude of the received signal. The chosen codes will be used as reference points in the second stage. In the second stage, a fine tuning algorithm is used to select a code in the range of reference codes determined in stage one. The fine tuning algorithm looks to the status of the data lock signal generated by the clock recovery circuit. If the data lock signal does not indicate a lock, the fine tuning algorithm cycles through the range of reference codes. If the data lock signal indicates a lock, then that particular code is continued to be used for the equalizer.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: May 20, 2008
    Assignee: Broadcom Corporation
    Inventors: Xi Chen, Bao Lenguyen, Wen-Chung (Stewart) Wu
  • Methods and circuits for optimal equalization
    Patent number: 6546047
    Abstract: Methods and circuits utilizing a two stage adaptation algorithm to determine the optimal code for an equalizer to compensate a received signal is disclosed. In the first stage, a coarse tuning algorithm is used to choose a range of codes based on the amplitude of the received signal. The chosen codes will be used as reference points in the second stage. In the second stage, a fine tuning algorithm is used to select a code in the range of reference codes determined in stage one. The fine tuning algorithm looks to the status of the data lock signal generated by the clock recovery circuit. If the data lock signal does not indicate a lock, the fine tuning algorithm cycles through the range of reference codes. If the data lock signal indicates a lock, then that particular code is continued to be used for the equalizer.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 8, 2003
    Assignee: Altima Communications, Inc.
    Inventors: Xi Chen, Bao Lenguyen, Wen-Chung (Stewart) Wu