Patents by Inventor Gunther Diefes

Gunther Diefes 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).

  • Cable services security system
    Patent number: 6067440
    Abstract: A cable television services security system includes a two-way communication system for transmitting a broadcast signal from a headend to subscribers and subscriber viewing information from a channel identifier located within a subscriber's home back to the headend. An addressable switch located outside of the subscriber's home compares the channel being viewed by the subscriber with a subscriber privilege code. If the subscriber is not authorized to view the channel, the broadcast signal being transmitted to the subscriber is interrupted.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: May 23, 2000
    Inventor: Gunther Diefes