Patents by Inventor Donald D. Filmer

Donald D. Filmer 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).

  • Apparatus for adapting computer for satellite communications
    Patent number: 5019910
    Abstract: Computer controllable apparatus for receiving and demodulating a satellite broadcast signal. A programmable radio frequency tuner/demodulator demodulates the broadcast signal to produce a baseband output signal. A video demodulator then demodulates the baseband output signal to produce a video output signal. First and second programmable audio frequency tuner/demodulators further demodulate the baseband output signal to produce first and second audio output signals. A data demodulator further demodulates the second audio output signal to produce a data output signal.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: May 28, 1991
    Assignee: Norsat International Inc.
    Inventor: Donald D. Filmer