Modification of color component video signals to compensate for

Facsimile and static presentation processing – Facsimile – Recording apparatus

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Details

358244, 358 80, 358 76, H04N 584, H04N 981

Patent

active

046943560

ABSTRACT:
A color video printer for producing a color photographic copy from a color video signal. A self-processing color photographic element is exposed to a sequence of six color field images constituting a full frame of a color video image. The printer includes a monochrome cathode-ray-tube (CRT) and a rotatable color filter have red (R), green (G) and blue (B) filters which are sequentially moved into an optical path between the CRT and the photographic element positioned at an exposure station. A video signal circuit provides a color video signal including concurrent R,G,B component signals which are modified with additional gain in the near white region to compensate for the drop off in white sensitivity of the photographic element in this region. A gate is selectively actuated to apply one of the white compensated color component signals to the CRT to effect exposure of the photographic element. Adjustable controls are provided to adjust the relative amount of red, green and blue signal contributing to the photographic exposure.

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