Geographic black-out method for direct broadcast satellite syste

Details Geographic black-out method for direct broadcast satellite syste Geographic black-out method for direct broadcast satellite syste

1987-04-03

1991-07-30

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

358349, H04H 100

Patent

active

050365371

ABSTRACT:
Television programs are broadcast to a plurality of receiver units in various geographic areas. Each unit has a memory for storage of a designation code representative of its location and a memory for the storage of a blackout tier indication. Prior to the transmission of the program to be blacked out, each unit is separately addressed and provided with a message including a designation code for storage. Then, a globally addressed message provides all receiver units having a selected designation code with a blackout tier indication for storage. A program tier indication is transmitted along with the program to be blacked out. Each unit, upon receiving the transmitted program, compares the transmitted program tier indication and the blackout tier indication in its memory. All receiver units having a stored blackout tier indication which matches the program tier indication are simultaneously prevented from displaying the program to be blacked out.

REFERENCES:
patent: 3716654 (1973-02-01), Hendrickson et al.
patent: 4292650 (1981-09-01), Hendrickson
patent: 4323921 (1982-04-01), Guillou
patent: 4337483 (1982-06-01), Guillou
patent: 4354201 (1982-10-01), Sechet et al.
patent: 4484027 (1984-11-01), Lee et al.
patent: 4494142 (1985-01-01), Mistry
patent: 4531020 (1985-07-01), Wechselberger et al.
patent: 4536791 (1985-08-01), Campbell et al.

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