Patents by Inventor Arnold Hackett

Arnold Hackett 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).

  • HVQ compression combined with orthogonal rotation
    Patent number: 6470052
    Abstract: Using hierarchical vector quantization (HVQ) to accomplish rotation in addition to compression and decompression. During the compression step the image is divided into segments and each segment is reduced to a codeword. These codewords are transposed so that the segments will be in rotated order when printed. Then the codewords are decompressed to form segments in which the pixels are in rotated order.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: October 22, 2002
    Assignee: Xerox Corporation
    Inventors: Uoc H. Nguyen, Kien T. Nguyen, Abraham E. Claproth, Arnold Hackett