Sync detector having noise adjusted slice level

Details Sync detector having noise adjusted slice level Sync detector having noise adjusted slice level

H - Electricity

04

N

350/81, 350/85

H04N 5/21 (2006.01) H04N 5/08 (2006.01)

Patent

CA 1243772

Abstract A sync detector is provided for recovering or extracting a sync signal from a video signal. The circuitry includes a slice level comparator for comparing the video signal against a slice level signal for providing a sync signal in dependence upon the comparison. The slice level signal is adjusted as a function of noise measured during a nonpicture portion of the video signal.

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