Antijitter arrangement for synchronizing pulse separator

Details Antijitter arrangement for synchronizing pulse separator Antijitter arrangement for synchronizing pulse separator

1986-07-07

1988-05-17

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358155, H04N 508

Patent

active

047454776

ABSTRACT:
A synchronizing pulse separator for a video apparatus provides horizontal and vertical synchronizing pulses from a composite video signal. The sync separator incorporates a compensation circuit that achieves noise immune operation with composite video signals that provide progressive field display and consequently lack synchronization equalizing pulses. The compensation circuit maintains a sufficient bias level on the sync separator transistor during the vertical blanking interval to prevent premature triggering of the vertical deflection circuit due to noise.

REFERENCES:
patent: 3441669 (1969-04-01), Janson et al.
patent: 3879576 (1975-04-01), Okada et al.
patent: 4313137 (1982-01-01), Weismueller
patent: 4357629 (1982-11-01), McGinn

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