Television tuning system with provisions for tuning RF signals w

Details Television tuning system with provisions for tuning RF signals w Television tuning system with provisions for tuning RF signals w

1987-05-08

1989-04-18

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

3581931, 380 15, 455164, 455182, H04N 7167

Patent

active

048233870

ABSTRACT:
A tuning system for tuning non-standard frequency RF signals which utilizes searches for non-standard RF signals by examining both a synchronization component and an AFT signal at each of a successive number of search frequencies. If the AFT signal indicates the detection of a carrier, the frequency at which this occurs is stored. However, this frequency is not caused to be tuned unless the search has been completed and the synchronization signal has not indicated the presence of a carrier. Thus, the reliability afforded by the synchronization component is maintained while adding the capability for tuning scrambled channels.

REFERENCES:
patent: 4291413 (1981-09-01), Henderson et al.
patent: 4295165 (1981-10-01), Watanabe et al.
patent: 4405947 (1983-09-01), Tults et al.
patent: 4408225 (1983-10-01), Ensinger et al.
patent: 4429415 (1984-01-01), Chin et al.
patent: 4544954 (1985-10-01), Chen
patent: 4603349 (1986-07-01), Robbins

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