Video processing system including comb filters

Details Video processing system including comb filters Video processing system including comb filters

1978-12-04

1980-03-25

Martin, John C.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 8, H04N 9535, H04N 579

Patent

active

041953096

ABSTRACT:
In a video processing system including comb filters for separating interleaved luminance and chrominance components, the time of occurrence of the color synchronizing component of the composite color video signal is detected after the comb filtering and separating of the luminance and chrominance components. The composite signal components include spurious frequency variations which accompany the composite signal during playback from a video disc. A first phase locked loop coupled to a frequency translator is used to remove the spurious frequency variations from the separated and frequency translated chrominance components. A second phase locked loop is connected between a second frequency translator and a clock controlled delay line. The second phase locked loop tracks the spurious frequency variations in a manner to assure that accurate combing of the component signals occurs at the output of the comb filters. The same reference frequency is used in the first phase locked loop as well as in the second frequency translator.

REFERENCES:
patent: 3996606 (1976-12-01), Pritchard
patent: 3996610 (1976-12-01), Kawamoto
patent: 4100567 (1978-07-01), Yoshinaka
Rhodes, "The Video Disc Player", RCA Review, vol. 39, Mar. 1978, pp. 198-221.

Affiliated with

Also associated with

Rating

Video processing system including comb filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Video processing system including comb filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Video processing system including comb filters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1404202