Power saving video circuit and sync separator

Details Power saving video circuit and sync separator Power saving video circuit and sync separator

1993-03-19

1996-01-09

Harvey, David E.

Television

Synchronization

Sync separation

348730, H04N 563, H04N 508

Patent

active

054832918

ABSTRACT:
A shift in the bias point of a sync separator is used to detect the presence of a video signal. The sync separator, which is initially in a low power mode, is then switched to a normal power mode in the presence of a video signal. Power for additional circuitry is likewise switched in response to the video signal's presence.

REFERENCES:
patent: 2601415 (1952-06-01), Oliver
patent: 4336554 (1982-06-01), Okada
patent: 4459613 (1984-07-01), Faroudja
patent: 4467358 (1984-08-01), Switsen
patent: 4625241 (1986-11-01), Ohaeki
patent: 4691354 (1987-09-01), Palminteri
patent: 4695901 (1987-09-01), Ryan
patent: 4870297 (1989-09-01), Karlock

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