Patents by Inventor Henry E. Vaughan, deceased

Henry E. Vaughan, deceased 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).

  • Time-slot interchange with protection switching
    Patent number: 4160127
    Abstract: Time-slot interchange circuitry for use in a time-division switching system is disclosed having n+1 input interface units and n+1 output interface units to serve n PCM lines. One of each group of n+1 interface units is designated a spare unit and control circuitry is disclosed for autonomously channeling incoming data words or outgoing data words through a spare unit and for autonomously altering the control for the spare unit in the event of failure of a unit in service.
    Type: Grant
    Filed: June 27, 1978
    Date of Patent: July 3, 1979
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Matthew F. Slana, Henry E. Vaughan, deceased