Subscription control for television programming

Details Subscription control for television programming Subscription control for television programming

1987-04-15

1989-01-10

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

358 84, 358 86, 380 10, H04N 7167, H04N 710

Patent

active

047979186

ABSTRACT:
A method and apparatus for one-way subscription television service control which allows the subscribers to subscribe in advance to a variety of programming or to select programming oa a pay-per-view basis.

REFERENCES:
patent: 2570209 (1951-10-01), Cotsworth, III
patent: 3508005 (1970-04-01), Hamburger
patent: 3885089 (1975-05-01), Callais et al.
patent: 4112464 (1978-09-01), Guif et al.
patent: 4245245 (1981-01-01), Matsumoto et al.
patent: 4484217 (1984-11-01), Block et al.
patent: 4536791 (1985-08-01), Campbell et al.

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