Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1982-06-22
1984-10-30
Murray, Richard
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 907
Patent
active
044802668
ABSTRACT:
In a color television camera of the type in which the red and blue color component signals modulated spatially by color filters and generated from a pick up tube are demodulated by the technique of phase separation through the utilization of correlation in successive scanning lines, a method and apparatus are disclosed which prevent the occurrence of false color signals within the camera by suppressing color errors which occur at the vertical edge portions in the reproduced image on a picture screen of a color television reproducing apparatus. The gain of a color error detecting difference signal indicative of the positions of the vertical edge portions is adjusted by either one or both of red and blue color difference signals, to selectively vary the amount of suppression of the color signals in accordance with the hues. The prevention of a decrease in the color saturation, and the prevention of a green or magenta color error, are effected at the contours of yellowish colors at the boundaries of black and white areas in an image having a high contrast.
REFERENCES:
patent: 4104679 (1978-08-01), Kitamura et al.
Meller Michael N.
Murray Richard
Nippon Kogaku K.K.
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