Patents by Inventor Yang Che-Chu

Yang Che-Chu 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).

  • Image processing system for scanning a rectangular document
    Patent number: 6449397
    Abstract: The present invention provides an image processing system for scanning a rectangular document. The system comprises a scanner with a scanning module and a computer. The computer has a memory, a processor, a scanner control program, and an image processing program. Depression of a start button generates a start signal that prompts the image processing system to rotate the document image from the scanned rectangular document by a tilting angle as well as to correct the image shape based on angle variation. This produces a straight and rectangular document image.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: September 10, 2002
    Assignee: Mustek Systems Inc.
    Inventor: Yang Che-Chu