Synchronization signal generating circuit

Details Synchronization signal generating circuit Synchronization signal generating circuit

1984-11-21

1987-10-20

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358153, H04N 510

Patent

active

047017961

ABSTRACT:
A circuit for generating vertical and horizontal sync signals suitable for a display which is driven by digital signals, e.g. a liquid crystal display panel of a television receiver, whereby purely digital circuit elements can be utilized throughout, as opposed to conventional sync signal generating circuits which are basically of analog type. Recognition of sync signal components derived from a composite video signal is based on time discrimination using counters and gate circuits, and the circuits can be substantially entirely implemented within a single low power-consumption integrated circuit, e.g. a CMOS IC.

REFERENCES:
patent: 3755624 (1973-08-01), Sekimoto
patent: 4159481 (1979-06-01), Mikado
patent: 4418364 (1983-11-01), Wine
patent: 4420775 (1983-12-01), Yamazaki
patent: 4556905 (1985-12-01), Ikejiri

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