Transmitting and receiving apparatus for permitting the transmission and reception of multi-tier subscription programs
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United States of America Patent
Stats
-
Feb 7, 1984
Grant Date -
N/A
app pub date -
May 29, 1981
filing date -
May 29, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
During non-program hours, a subscription broadcast television station broadcasts in place of programming the time of a future special broadcast as well as other information to enable decoding circuitry of subscribers. The receiver at the subscriber's residence tunes during non-broadcast hours all subscription television broadcast frequencies, and compares the subscriber's identification number with information being broadcast. When a coincidence between the received identification number being broadcast, and a stored identification number is obtained, the time of the future special broadcast is stored in a memory. At the time of a subscription broadcast identified in the memory, tuning data is recalled from a memory for tuning the receiver to receive the special broadcast. The subscriber's decoding apparatus is also activated permitting descrambling of the special program broadcast.
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