Patents by Inventor Yu-Meng Chang

Yu-Meng 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).

  • Optical mouse chip with silicon retina structure
    Patent number: 6697052
    Abstract: An optical mouse chip with silicon retina structure comprises an image sensor array, an accumulator and a comparing/selecting unit. The image sensor array senses a direction parameter of an image along each axis. The accumulator sums the direction parameters of the image along different axes. The comparing/selecting unit selects a largest one from the sum of direction parameters of the image along different axes to determine a moving direction of the image.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: February 24, 2004
    Assignee: Lite-On Semiconductor Corp.
    Inventors: Chi-Ting Shen, Ming-Chieh Tsou, Yu-Meng Chang, Kuan-Hsun Huang, Li-Ju Lin, Chung-Yu Wu
  • Optical mouse chip with silicon retina structure
    Publication number: 20030085875
    Abstract: An optical mouse chip with silicon retina structure comprises an image sensor array, an accumulator and a comparing/selecting unit. The image sensor array senses a direction parameter of an image along each axis. The accumulator sums the direction parameters of the image along different axes. The comparing/selecting unit selects a largest one from the sum of direction parameters of the image along different axes to determine a moving direction of the image.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: Chi-Ting Shen, Ming-Chieh Tsou, Yu-Meng Chang, Kuan-Hsun Huang, Li-Ju Lin, Chung-Yu Wu