Patents by Inventor Richard T. Pfeiffer

Richard T. Pfeiffer 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).

  • Video decoder
    Patent number: 5576765
    Abstract: A digital signal decoder system for receiving compressed encoded digitized video signals and transmitting decompressed decoded digital video signals includes a FIFO Data Buffer, a RAM having (1) a compressed, encoded Data Buffer and (2) a data portion for storing decompressed digital video buffer data. A Memory Management Unit is provided for managing the RAM.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: November 19, 1996
    Assignee: International Business Machines, Corporation
    Inventors: Dennis P. Cheney, Vincent C. Conzola, Chuck H. Ngai, Richard T. Pfeiffer, James E. Phillips