Sync separator with a look-ahead clamp

Details Sync separator with a look-ahead clamp Sync separator with a look-ahead clamp

1979-02-05

1980-11-11

Cardillo, Jr., Raymond F.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

H04N 508

Patent

active

042336295

ABSTRACT:
An apparatus and method for precise separation of synchronizing information from a color television signal is described. Synchronizing signals are separated from the input video and used in a sample-and-hold circuit as the sampling pulses. The input video is sampled during the duration of the sync pulse. The sample is inverted and fed to a summing point where it is summed with a delayed version of the input video. A null is produced at the summing point during the duration of the input sync pulse. Since the input video to summing point has been delayed, the clamp null at the summing point begins during the front porch of the horizontal line interval allowing the leading edge of sync to be picked off very accurately by a sync separating comparator.

REFERENCES:
patent: 3876828 (1975-04-01), Cook
patent: 4064541 (1977-12-01), Schneider et al.
patent: 4081833 (1978-03-01), Akiyama

Affiliated with

Also associated with

Rating

Sync separator with a look-ahead clamp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sync separator with a look-ahead clamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sync separator with a look-ahead clamp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1694506