Patents by Inventor Jay A. Marshall

Jay A. Marshall 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).

  • Direct access video bus computer system and method for transferring video information using a dedicated video bus
    Patent number: 5666545
    Abstract: In a computer system, a direct access, independently arbitrated video bus (connected to a personal computer (PC) -compatible video subsystem) is directly coupled to one or more dual-ported processors to eliminate video cycle traffic over the system bus or buses and I/O bus, thereby improving system performance. The preferred embodiment architecture has, in addition to the video bus, multiple processors coupled to at least two independently arbitrated system buses which are coupled to at least two independently arbitrated input/output (I/O) buses, to provide for rapid bus information signal transfer rates.
    Type: Grant
    Filed: May 11, 1994
    Date of Patent: September 9, 1997
    Assignee: NCR Corporation
    Inventors: Jay A. Marshall, Thomas F. Heil, Donald H. Parsons, Jr.