Patents by Inventor Chun-Ye Chang

Chun-Ye Chang 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).

  • Method and apparatus for accurate synchronization using symbol decision feedback
    Patent number: 6130920
    Abstract: A circuit (12) for symbol decision directed feedback synchronization includes a current synchonization clock (45) that provides an initial sampling point and selects a detector corresponding to a current symbol decision. The circuit further includes a plurality of detectors (31, 32, 33, and 34) including the detector corresponding to the current symbol decision, a buffer (736) for storing the output of the detector corresponding to the current symbol decision and a processor (300) for seeking within a predetermined window about the initial sampling point for an optimum phase value to provide an adjustment signal which is used by the processor to adjust a subsequent symbol's sychronization clock to provide an optimal sampling point.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: October 10, 2000
    Assignee: Motorola
    Inventors: Clinton C. Powell, II, Chun-Ye Chang, David L. Brown, David F. Brown, Robert Karl Schweickert