Pay TV control system
Automatically corrected electronic timepiece
Device for preventing unauthorized usage of appliance
ApplicationNo. 421385 filed on 04/13/1995
US Classes:725/41, Video still or clip368/46, PLURAL TIMEPIECE SYSTEM OR SYSTEM DEVICE (E.G., PRIMARY OR SECONDARY CLOCKS)386/46, PROCESSING OF TELEVISION SIGNAL FOR DYNAMIC RECORDING OR REPRODUCING386/83, Including programmable apparatus725/43With separate window, panel, or screen
ExaminersPrimary: Peng, John K.
Assistant: Burgess, Glenton B.
Attorney, Agent or Firm
Foreign Patent References
International ClassH04N 005/76
AbstractApparatus and methods are provided for synchronizing a clock to a network clock. In one embodiment the apparatus includes a device for receiving a first compressed code representative of, and compressed in length from, the combination of a channel, a time-of-day, and a length of time for a first program on a first day and on a first channel currently displayed on a television, a decoder for decoding the first compressed code into a first channel, a first time-of-day, and a first length of time, a device for receiving an end of program indication for the program, and a device for loading the sum of the first time-of-day and the first length of time into the clock calendar in response to receiving the end of program indication.