Patents by Inventor David J. Shippy

David J. Shippy 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).

  • Data processing system parallel data bus having a single oscillator clocking apparatus
    Patent number: 4943984
    Abstract: A synchronous parallel data bus particularly adapted for use in a data processing system where it is necessary to transfer data over long distances. The physical connection between communicating units includes a plurality of wires adapted to carry the parallel data signal and a wire which carries a clock signal to the remote unit. When data is transmitted from the remote unit to the base unit, the clock signal which originated at the base unit and was transmitted to the remote unit is "turned around" and transmitted back to the base unit for use in receiving the data from the remote unit.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: July 24, 1990
    Assignee: International Business Machines Corporation
    Inventors: Gerald G. Pechanek, David J. Shippy, Mark C. Snedaker, Sandra S. Woodward