Patents by Inventor George Andersen

George Andersen 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).

  • Secure television system
    Patent number: 3936594
    Abstract: A secure system for television transmission wherein a television signal is transmitted on one frequency channel and a composite high fidelity stereophonic audio signal is transmitted on a separate unrelated frequency channel. Unauthorized reception of the audio portion of the signal is prevented by using non-standard multiplex transmission and by transmitting the audio signal in a frequency band which is preferably non-receivable by a standard television or FM receiver.
    Type: Grant
    Filed: August 5, 1974
    Date of Patent: February 3, 1976
    Assignee: Lincoln Center for the Performing Arts, Inc.
    Inventors: Mark Schubin, George Andersen