Patents by Inventor Babak Ayazifar

Babak Ayazifar 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 scaleable compressed video signal
    Patent number: 5387940
    Abstract: A compression/decompression system includes a source of non-interlaced scanned video signal. A preprocessor constructs interlaced scanned video signal from the non-interlaced scanned video signal by selection of alternate lines of successive non-interlaced image signals. The interlaced scanned video signal is compressed according to known methods to generate primary compressed video data. The primary data is decompressed by known processes, inverse to the compression processes, to regenerate the interlaced scanned frames. Interlaced scanned video signal, corresponding to the intervening lines of the non-interlaced scanned video signal, which were not included in the primary interlaced scanned video signal, is predicted from the decompressed frames of video signal. In addition the intervening lines of the original non-interlaced scanned video signal, which were not included in the primary interlaced scanned video signal, are formed into secondary interlaced scanned video signal.
    Type: Grant
    Filed: July 7, 1993
    Date of Patent: February 7, 1995
    Assignee: RCA Thomson Licensing Corporation
    Inventors: Wilson Kwok, Billy W. Beyers, Jr., Babak Ayazifar, Joel W. Zdepski