Patents by Inventor Edward Y. Kwong

Edward Y. Kwong 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).

  • Memory read/write control system for color graphic display
    Patent number: 4839828
    Abstract: A color graphic display having a read/write control system for a buffer memory therein. The invention provides Line-on-Line and Underpaint by way of a method which invleves reading the contents of a frame buffer storage location for which new pixel data is being provided, comparing those contents with data representing a display background characteristic or color, and if the result of the comparison is positive, storing the new pixel data in the frame buffer storage location. If the result of the comparison is negative, a selected data value different from the new pixel data is stored in the frame buffer storage location.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: June 13, 1989
    Assignee: International Business Machines Corporation
    Inventors: Matthew Elsner, Yoshio Iida, Edward Y. Kwong, Omar M. Rahim