Patents by Inventor Albert N. Cazes

Albert N. Cazes 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).

  • Fast JPEG huffman encoding and decoding
    Patent number: 6373412
    Abstract: Huffman encoding, particularly from a packed data format, is simplified by using two different table formats depending on code length. Huffman tables are also reduced in size thereby. Decoding is performed in reduced time by testing for the length of valid Huffman codes in a compressed data stream and using an offset corresponding to a test criterion yielding a particular test result to provide a direct index into Huffman table symbol values while greatly reducing the size of look-up tables used for such a purpose.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: April 16, 2002
    Assignee: International Business Machines Corporation
    Inventors: Joan L. Mitchell, Albert N. Cazes, Neil M. Leeder
  • Fast JPEG huffman encoding and decoding
    Patent number: RE39925
    Abstract: Huffman encoding, particularly from a packed data format, is simplified by using two different table formats depending on code length. Huffman tables are also reduced in size thereby. Decoding is performed in reduced time by testing for the length of valid Huffman codes in a compressed data stream and using an offset corresponding to a test criterion yielding a particular test result to provide a direct index into Huffman table symbol values while greatly reducing the size of look-up tables used for such a purpose.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: November 27, 2007
    Assignee: International Business Machines Corporation
    Inventors: Joan L. Mitchell, Albert N. Cazes, Neil M. Leeder