Patents by Inventor William I. Hallahan

William I. Hallahan 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 apparatus for providing 64-bit YUV to RGB color conversion
    Patent number: 6487308
    Abstract: A method of providing conversion from YUV signals to RGB signals includes the steps of determining a correspondence value between each of the Y, U, and V pixel values and the corresponding one of the R, G, and B pixel values. Three tables are generated; a Y table, a U table and a V table. During operation, each table may then be easily accessed by indexing the table with the respective Y, U or V input, to provide R,G,B data. The method may be used in a 64 bit embodiment using two registers or one register. Alternatively, the method may be used in a 32 bit embodiment. The conversion method can easily be augmented to provide color adjustment during conversion without any added complexity.
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: November 26, 2002
    Assignee: Compaq Computer Corporation
    Inventors: Robert A. Ulichney, William I. Hallahan