Patents by Inventor Charles C. Hefner

Charles C. Hefner 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).

  • Signal peaking device for single-line video input
    Patent number: 4667239
    Abstract: A signal peaking device for a single line video input has a transversal filter with a plurality of sample and hold (S & H) circuits, a corresponding plurality of line drivers and output switches. The output switches are connected to a plurality of weighting circuits and a summer that sums the weighted output of the output switches. A free running digital shift register generates the sample pulse that operates the sample and hold circuits.
    Type: Grant
    Filed: August 6, 1984
    Date of Patent: May 19, 1987
    Assignee: Texas Instruments Incorporated
    Inventors: Dana Dudley, Charles C. Hefner