Patents by Inventor David L. Zeph

David L. Zeph 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).

  • Solid state commutator switch
    Patent number: 4345251
    Abstract: A switching system for connecting a plurality of input signals to a pluray of selected outputs. A plurality of input signals are connected to a crosspoint matrix through a buffer circuit. The crosspoint switching matrix is comprised of a plurality of CMOS crosspoint switch integrated circuits and switching is controlled by a microprocessor which provides the desired connections for selected outputs. A built-in-test circuit (BITE) is provided for testing each circuit path in the switching system.
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: August 17, 1982
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Robert H. Begeman, Barry D. Sanderson, Donald C. Weiss, David L. Zeph