Sync separator

Details Sync separator Sync separator

1986-04-30

1987-10-06

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

328139, H04N 508, H04N 510

Patent

active

046986790

ABSTRACT:
A sync separator detects, in a corresponding part of the waveform of a video signal, the occurrence of the trailing edge of a corresponding sync pulse, in accordance with the rate of change of the video signal. Information obtained from the sync tip and the back porch portions of the corresponding sync pulse is used for generating a slice level signal. A comparator responsive to the slice level signal separates a sync signal from the video signal.

REFERENCES:
patent: 3706847 (1972-12-01), Smeulers
patent: 4185299 (1980-01-01), Harford
patent: 4621289 (1986-11-01), Bart et al.

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