Circuit for and method of broadband comb filtering a composite v

Details Circuit for and method of broadband comb filtering a composite v Circuit for and method of broadband comb filtering a composite v

1984-08-31

1986-04-15

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 36, H04N 964

Patent

active

045831157

ABSTRACT:
A circuit and method are described for separating the luminance from the chrominance signals which are frequency interleaved in a vestigial sideband composite video signal of the type generated in the NTSC system developed in the United States. The vestigial frequencies are double-sideband detected. The non-vestigial frequencies are passed through a high pass filter and a comb filter. The luminance signals at the output of the comb filter is recombined with the double sideband detected vestigial luminance signal to provide a flat combed luminance output. The chrominance signal at the output of the comb filter is advantageously bandpass filtered prior to being introduced into the chroma detectors or demodulators, or low pass filtered at the output of such detectors or demodulators.

REFERENCES:
patent: 3715477 (1973-02-01), Olson
patent: 4003079 (1977-01-01), Woo
patent: 4074321 (1978-02-01), Miller
patent: 4096516 (1978-06-01), Pritchard
patent: 4241363 (1980-12-01), Maeyama et al.
patent: 4245237 (1981-01-01), Lagoni
patent: 4291331 (1981-09-01), Devereux
patent: 4365266 (1982-12-01), Lagoni
patent: 4419689 (1983-12-01), Russell et al.
"Color TV Picture Enhancement with a CCD Comb Filter", Pritchard, RCA Engineer, 25-26, Apr./May/Jun., 1980, p. 6.
"A CCD Comb Filter IC for Consumer TV Applications", Carnes and Sauer, RCA Engineer, 25-26, Apr./May/Jun., 1980, pp. 7-10.
"Product Design of a Base-Band Comb Filter System", Lagoni RCA Engineer, 25-26, Apr./May/Jun. 1980, pp. 11-15.

Affiliated with

Also associated with

Rating

Circuit for and method of broadband comb filtering a composite v does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for and method of broadband comb filtering a composite v, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for and method of broadband comb filtering a composite v will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1442427