Patents by Inventor Charles F. Newby, Jr.

Charles F. Newby, Jr. 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).

  • Signal encryption and distribution system for controlling scrambling and selective remote descrambling of television signals
    Patent number: 4613901
    Abstract: A system and method for scrambling and selectively descrambling television signals that are transmitted to subscribers' descramblers in a subscription television system. A working key signal is generated by processing an "initialization vector" signal in accordance with the DES algorithm upon the algorithm being keyed by either a common category key signal or some other key signal. A unique encryption keystream is generated by processing the initialization vector signal in accordance with the DES algorithm upon the algorithm being keyed by the working key signal. A television signal is scrambled in accordance with the unique encryption keystream to provide a scrambled television signal.
    Type: Grant
    Filed: May 27, 1983
    Date of Patent: September 23, 1986
    Assignee: M/A-COM Linkabit, Inc.
    Inventors: Klein S. Gilhousen, Charles F. Newby, Jr., Karl E. Moerder