Patents by Inventor Donald E. Renaud

Donald E. Renaud 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).

  • Patent number: 3987481
    Abstract: A silicon monolithic integrated circuit color television demodulator includes three sets of full-wave synchronous switched demodulators for demodulating the red, blue and green color signals or color difference signal present in a composite television signal. Each of the demodulators consists of two pairs of switching transistors, and the transistors in each of the pairs are rendered alternately conductive by reference signals derived from a reference oscillator in a color television receiver. Signals from the reference oscillator at the phases of +(R-Y) and -(B-Y) color difference signals are applied to the red and blue demodulators, respectively. The reference signal for the green demodulator is obtained by applying the +(R-Y) reference signal to one transistor of each of the two pairs of switching transistors in the green demodulator and by applying a portion of the -(B-Y) reference signal to the other transistor in each of the pairs.
    Type: Grant
    Filed: May 9, 1974
    Date of Patent: October 19, 1976
    Assignee: Motorola, Inc.
    Inventor: Donald E. Renaud