Patents by Inventor David E. Hershberg

David E. Hershberg 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 distributing television signal with stereophonic audio via satellite
    Patent number: 4148060
    Abstract: A system for distributing a television program with stereophonic audio via satellite includes a video base band, and audio left and right signals each frequency modulating spaced subcarriers. Special low level tone pulses are transmitted via the respective subcarriers when a television program with stereophonic audio begins and when it ends.Those receiving stations wishing to distribute stereo audio (as via cooperating local television and FM stations) merely detect and disseminate each subcarrier modulation. Receiving stations desirous of distributing monaural audio recognize the stereo program signalling pilot, and enable a left and right program summing amplifier to restore and furnish a compatable, full monaural audio signal.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: April 3, 1979
    Assignee: Satellite Transmission Systems, Inc.
    Inventor: David E. Hershberg