Patents by Inventor Randy D. Cornwell

Randy D. Cornwell 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).

  • Bi-directional serial video port
    Patent number: 6256686
    Abstract: A bi-directional serial video port coupled to a cable has a cable driver coupled to a cable connector via a D.C. blocking capacitor and a cable impedance matching resistor in series. A receiver is coupled to the cable connector via a decoupling capacitor. When configured as an input port, a control signal causes the output from the cable driver to be low so that the cable impedance matching resistor forms a termination for a cable connected to the cable connector and the receiver passes at serial digital video signal from the cable connector for further processing. Otherwise a serial digital video signal is passed by the cable driver to the cable and the output from the receiver is disregarded.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: July 3, 2001
    Assignee: Grass Valley (US) Inc.
    Inventor: Randy D. Cornwell