Color television chroma keying signal generator

Details Color television chroma keying signal generator Color television chroma keying signal generator

1976-08-09

1977-09-27

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

040515206

ABSTRACT:
A chroma keying signal generator which does not operate in the usual manner with luminance dependent color difference signals (R-Y) and (B-Y) but with luminance independent chromaticity signals (R-Y)/Y and (B-Y)/Y. On the one hand a signal division may follow in the generator for deriving the chromaticity signals and on the other hand a threshold circuit may be used having a threshold voltage which varies with the luminance. Owing to the fact that generating the signal is independent of the luminance an intense, uniform background illumination without shadows thereon is no longer required.

REFERENCES:
patent: 3678182 (1972-07-01), Boxman et al.
patent: 3771155 (1973-11-01), Hayashi et al.
patent: 3959813 (1976-05-01), Legler

Affiliated with

Also associated with

Rating

Color television chroma keying signal generator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color television chroma keying signal generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color television chroma keying signal generator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1819211