Patents by Inventor Norman W. Hawn

Norman W. Hawn 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).

  • Ripple free amplitude demodulator
    Patent number: 4426623
    Abstract: A pulse sample demodulator which has a first sample and hold circuit detects the peak amplitude of the time varying waveform during a short sampling interval. The first sample and hold circuit is triggered by narrow pulses produced by a circuit responsive to the occurrence of each peak in the time varying waveform. A second sample and hold circuit, sampling during an interval not coincident with the first sampling interval, receives the information stored in the first sample and hold circuit; but sampling at a different interval, it does not receive the time varying signal applied to the first sample and hold circuit, which would otherwise appear as ripple in the output of the demodulator.
    Type: Grant
    Filed: July 2, 1981
    Date of Patent: January 17, 1984
    Assignee: Sperry Corporation
    Inventors: Dean R. Wilkens, Dan B. Harned, Norman W. Hawn