Patents by Inventor David B. Hallock

David B. Hallock 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).

  • Digital FM demodulator signal-to-noise improvement
    Patent number: 4839606
    Abstract: Audio beat notes produced by sampling a square wave in a digital quadrature FM demodulator are reduced by adding random noise, or dither, to the signal to be demodulated to randomly vary the width of successive pulses in the square wave.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: June 13, 1989
    Assignee: Rockwell International Corporation
    Inventor: David B. Hallock
  • Method and apparatus for generating a non-linear signal
    Patent number: 4034304
    Abstract: A non-linear output signal is generated from an input signal by multiplying the input signal with a feedback signal which is directly proportional to the difference between the output signal and some signal threshold level whenever the output signal is in one region with respect to the signal threshold level and zero whenever the output signal is in the other region.
    Type: Grant
    Filed: June 8, 1976
    Date of Patent: July 5, 1977
    Assignee: Rockwell International Corporation
    Inventor: David B. Hallock