Patents by Inventor Kai C. K. Sun, deceased

Kai C. K. Sun, deceased 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).

  • Processing of disc-drive pickup signals
    Patent number: 6167011
    Abstract: Processing of disc-drive pickup signals in a manner that maintains an approximate quadrature relationship. Second order matching filters (353, 303) process pickup signals to remove high frequency components and maintain an approximate quadrature relationship.
    Type: Grant
    Filed: June 2, 1999
    Date of Patent: December 26, 2000
    Assignee: Oak Technology, Inc.
    Inventors: Kai C. K. Sun, deceased, John L. Grimsley