Color adjusting device

Details Color adjusting device Color adjusting device

1985-12-13

1987-07-07

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 29C, 358 27, H04N 146, H04N 977

Patent

active

046790721

ABSTRACT:
The color adjusting device of the invention is provided with coordinate axis converting means in which a plurality of independent chrominance signals at the respective inlets after having been converted with respect to the coordinate axes based on a linear equation whose terms include trigonometrical functions, are placed onto respective outlets. This coordinate axis converting means includes memories operating with preset certain functions, and, moreover, has a function of turning the axes for the ordinates of the chrominance signals about their origin in the common plane, and includes vector level control means for the chrominance signals in the turned axes. That coordinate axis converting means further includes means receptive of the chrominance signals for producing a luminance signal and means for controlling the level of the luminance signal.

REFERENCES:
patent: 4293873 (1981-10-01), Barendregt
patent: 4477833 (1984-10-01), Clark
patent: 4500972 (1985-02-01), Kuhn
patent: 4602277 (1986-07-01), Guichard

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