Patents by Inventor Orval E. Beckman

Orval E. Beckman 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).

  • Demodulator having two phase shift networks for wide band television audio
    Patent number: 4518997
    Abstract: A television receiver includes an integrated circuit audio system suitable for stereo sound, and a source of angle-modulation audio waves supplied from a limiter/integrator to a differential amplifier detector. A series parallel arrangement of elements in a first phase shift network has the parallel connected elements coupled across the inputs of the differential amplifier detector. A second phase shift network, coupled directly across the limiter/integrator output, loads the first phase shift network and linearizes the audio system output over a large signal deviation. The output of the differential amplifier detector supplies the detected audio output.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: May 21, 1985
    Assignee: Zenith Radio Corporation
    Inventor: Orval E. Beckman