Patents by Inventor Norman P. Farquhar

Norman P. Farquhar 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).

  • Computer having a single bus supporting multiple bus architectures operating with different bus parameters
    Patent number: 5630163
    Abstract: A data processing system including a central processing unit and control circuitry on a single chip connected by a common bus to two or more bus devices having different sets of bus parameters. A first set of bus parameters functions as a memory bus for transfers to and from main memory, a second set of bus parameters functions as an I/O bus for I/O device transfers and a third set of bus parameters functions as a video bus for transfers to a video display. Each set of bus parameters has different timing selected to maximize transfers for the particular bus function (main memory, I/O, video or other) implemented by the bus parameters.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: May 13, 1997
    Assignee: Vadem Corporation
    Inventors: Henry T. Fung, Siu K. Tsang, Phillip M. Mitchell, Norman P. Farquhar