Patents by Inventor J. F. Chen

J. F. Chen 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 device for compressing image data
    Patent number: 6115500
    Abstract: Zigzag scanning is one of the key techniques in image data compression. An efficient method and device is needed in some dedicated cases. In the present invention, a fixed delay is performed between DCT and zigzag scan to make the present invention simple. The present invention requires only half the number of transistors compared to the prior art.
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: September 5, 2000
    Assignee: Winbond Electronics Corp.
    Inventors: Chao-Shuenn Hsu, J. F. Chen