Patents by Inventor Enzo M. Guerrera

Enzo M. Guerrera 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).

  • Reduced-quality resolution digital video encoder/decoder
    Patent number: 5870144
    Abstract: A DV codec process for reduced-quality size decoding of DV encoded video data receives a DV encoded bit stream. Compressed macroblock information and DCT information, including a DC coefficient value, is read for a current DCT block. It is determined whether the current DCT block is a still DCT block. If the current DCT block is a still DCT block, run length decoding is performed to obtain a number of low frequency AC coefficient values for the current still DCT block and a reduced coefficient inverse discrete cosine transform is performed on the low frequency AC coefficient values to yield decoded pixel values for the current still DCT block. If the current DCT block is a motion DCT block, run length decoding is performed to obtain a number of low frequency AC coefficient values for the current motion DCT block and a reduced coefficient inverse discrete cosine transform is performed on the low frequency AC coefficient values to yield decoded pixel values for the current motion DCT block.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: February 9, 1999
    Assignee: Adaptec, Inc.
    Inventor: Enzo M. Guerrera