Patents by Inventor Peter Griesbaum

Peter Griesbaum 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: 5742357
    Abstract: An improved tuner for recovery of data having a data bandwidth embedded in a video signal transmitted in association with a video carrier frequency is disclosed. The entire video signal is shifted to the intermediate frequency bandwidth, thereby shifting the data bandwidth to an IF data bandwidth. The IF data bandwidth is then filtered to block as much of the spectrum of the IF signal that is outside of the IF data bandwidth. The filtered IF data bandwidth is then demodulated again using an IF carrier generated by a local oscillator that tracks frequency drift in the carrier.
    Type: Grant
    Filed: April 12, 1996
    Date of Patent: April 21, 1998
    Assignee: Wavephore, Inc.
    Inventor: Peter Griesbaum