Patents by Inventor Daniel J. Barnes

Daniel J. Barnes 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).

  • Compatible 4-2-4 encoding-decoding system
    Patent number: 3958085
    Abstract: A four channel stereophonic sound system requiring only two transmission channels and two audio amplifiers is disclosed wherein two different linear combinations of all four original discrete signals are recorded or transmitted, amplified and subsequently decoded in a passive network interconnecting the four output speaker system.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: May 18, 1976
    Assignee: The Magnavox Company
    Inventors: Ronald O. Barber, Daniel J. Barnes