Television video signal control system

Details Television video signal control system Television video signal control system

1989-02-23

1990-11-13

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358174, H04N 518

Patent

active

049705946

ABSTRACT:
A television video signal control system is disclosed in which an amplitude control signal and a clamp voltage control signal digitally detected in the automatic gain control and clamp voltage control of a television signal receiver respectively are applied alternately to a single D/A converter. The resulting analog signal is sampled and held alternately at holding circuits corresponding to the two control signals. A D/A converter for converting the two control signals from digital to analog state is thus saved as compared with the prior art.

REFERENCES:
patent: 4163248 (1979-07-01), Heitmann
patent: 4535357 (1985-08-01), Penney
patent: 4742392 (1988-05-01), Hashimoto
patent: 4766485 (1988-08-01), Takayama
"Mono-Channel Transmission System Using Earth Satellite for High-Definition Television (HD-TV Broadcasting System using Single Channel Satellite)", by Yuichi Ninomiya et al, The Institute of Television Engineers of Japan, Research Society Report, TEBX 95-2 Mar. 22, 1984, vol. 7, No. 44.

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