Patents by Inventor Shin-Su Wang

Shin-Su Wang 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).

  • Apparatus for processing video signals and employing phase-locked loop
    Patent number: 6184939
    Abstract: Apparatus for processing video signals and which can be connected with a personal computer for further processing. An analog to digital converter samples and converts input NTSC composite video signal into digital signal for subsequent processing. A phase-locked loop provides sampling clock signal to the ADC, and also ensures accurate sample phase. Based on a theory that human eye is more sensitive to the luminance component of video signals, a double sampling circuit is included which double samples the luminance component of a video signal to improve the overall resolution of an image.
    Type: Grant
    Filed: December 9, 1998
    Date of Patent: February 6, 2001
    Assignee: Umax Data Systems Inc.
    Inventors: Shin-Su Wang, Wen-Chin Cheng, Shih-Hsun Lin