Patents by Inventor Christopher D. Duncan

Christopher D. Duncan 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).

  • Apparatus within an integrated circuit for automatically detecting a test mode of operation of the integrated circuit and selecting a test clock signal
    Patent number: 5517109
    Abstract: An integrated circuit (IC) includes circuitry for generating a clock signal during both a normal mode of operation and a test mode of operation. During the normal mode, an input clock signal is delayed via a skew corrector. In test mode, an input test clock signal bypasses the skew corrector via a clock signal source selector. The clock signal source selector is controlled automatically by a mode detector that responds to the input clock signals to determine the mode of operation of the IC.
    Type: Grant
    Filed: January 26, 1995
    Date of Patent: May 14, 1996
    Assignee: Thomson Consumer Electronics, Inc.
    Inventors: David L. Albean, John W. Gyurek, Christopher D. Duncan