Receiver for pay television

Details Receiver for pay television Receiver for pay television

1987-08-05

1989-02-28

Buczinski, Stephen C.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

358 84, 380 16, H04N 7167, H04N 710

Patent

active

048093254

ABSTRACT:
A payment control apparatus for a pay television system includes a detector for detecting an advance fee data group transmitted from a center. An advance memory coupled to the detector stores the advanced fee data group. An error check controller coupled to the detector detects errors in the advance fee data group. A display coupled to the error check controller displays error conditions in the advance fee data group.

REFERENCES:
patent: 3508005 (1970-04-01), Hamburger
patent: 3863215 (1975-01-01), McGrogan
patent: 4390898 (1983-06-01), Bond et al.
patent: 4484217 (1984-11-01), Block et al.
patent: 4673976 (1987-06-01), Wreford
patent: 4712238 (1987-12-01), Gilhousen et al.

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