Facsimile and static presentation processing – Natural color facsimile – Color correction
Patent
1992-03-25
1994-07-26
Groody, James J.
Facsimile and static presentation processing
Natural color facsimile
Color correction
358520, 348645, 348652, H04N 964
Patent
active
053330706
ABSTRACT:
Disclosed herein is an apparatus for carrying out color correction on a video signal. The apparatus basically comprises a Y/C separating circuit for separating the video signal into a luminance signal and a color signal, a decoder for decomposing these signals into color separation signals, three three-row/three-column type color-correcting matrix circuits for electrically processing the color separation signals for color correction, an A/D converter circuit for converting the so-processed signals into digital signals, a frame memory for storing the digital signals therein as data, a correction circuit and a printer head. By using the apparatus referred to above, a user can emphatically perform correction on the hue, chroma and luminance of each of specific colors. Thus, the user can adjust the quality of an image with extreme ease.
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patent: 4768082 (1988-08-01), Hiratsuka
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patent: 4959659 (1990-09-01), Sasaki
Fuji Photo Film Co. , Ltd.
Grant Chris
Groody James J.
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