Methods and apparatus for electronically limiting broadcast comm

Details Methods and apparatus for electronically limiting broadcast comm Methods and apparatus for electronically limiting broadcast comm

1990-05-22

1991-10-08

Tarcza, Thomas H.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 13, H04N 7167

Patent

active

050561391

ABSTRACT:
A communication receiver (12) is provided having a radio frequency section (20) for receiving a communication signal (14) and a corresponding code signal (16) carrying an identification code. An intermediate frequency section (26) is coupled to radio frequency section (20) to convert the frequency of said communication signal. A decoder (42) having a memory for storing a security code, is coupled to radio frequency section (20) and intermediate frequency section (26). Decoder (20) is operable to compare the identification code and the security code and selectively disable the intermediate frequency section in response.

REFERENCES:
patent: 4130833 (1978-12-01), Chomet
patent: 4323922 (1982-04-01), den Toonder et al.
patent: 4518993 (1985-05-01), Okada et al.
patent: 4530008 (1985-07-01), McVoy
patent: 4837820 (1989-06-01), Bellavia, Jr.
patent: 4864613 (1989-09-01), Van Cleave
patent: 4947429 (1990-08-01), Bestler et al.

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