Sync stripper circuit

Details Sync stripper circuit Sync stripper circuit

1992-11-23

1996-01-16

Groody, James J.

Television

Synchronization

Sync separation

348526, 348529, 348530, H04N 508

Patent

active

054852200

ABSTRACT:
A sync stripper circuit receives from a medical imaging modality a composite video signal with a horizontal sync frequency within one of first, second, third or fourth frequency ranges. The sync stripper circuit includes a circuit for stripping the composite sync signal from the received signal; horizontal sync detection circuit for detecting the horizontal sync signal from the stripped composite sync signal; a vertical sync detection circuit for detecting the vertical sync signal; an F1/F2 field detection circuit for detecting the F1/F2 field from the stripped composite sync signal; and a control circuit for controlling the horizontal sync detection circuit, the vertical sync detection circuit and the F1/F2 field detection circuit to operate in the selected one of said first, second, third or fourth frequency ranges of the received composite video signal. A serrating signal circuit inserts a horizontal signal into the vertical sync signal if serrating signals are absent therein.

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