Luminance signal and chrominance signal separating circuit

Details Luminance signal and chrominance signal separating circuit Luminance signal and chrominance signal separating circuit

1989-08-29

1990-12-25

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 978

Patent

active

049807374

ABSTRACT:
In this invention, by using first and second 1H delay means, first to third band pass means near 3.58 MH.sub.H, first to third polarity inverting means, first to fifth adding means and first to third intermediate value detecting circuits, from a composite video signal fed as an input, a chrominance signal in which no luminance signal component is mixed can be obtained, a chrominance signal having no such resolution reduction as dulling in the vertical direction can be obtained and a luminance signal having no chrominance signal component mixed in and having no such resolution reduction as dulling in the vertical direction can be obtained. Further, a chrominance signal component can be effectively separated in the edge part of a video image in which the luminance variation is large.

REFERENCES:
patent: 4489346 (1984-12-01), Tanaka et al.
Takashi Okada, Masayuki Hongu, Yutaka Tanaka--Flicker-Free Non Interlaced Receiving System for Standard Color TV Signals; IEEE Transactions on Consumer Electronics, vol. CE-31, No. 3, Aug. 1985, pp. 240-254.

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