Color image pickup device

Details Color image pickup device Color image pickup device

1983-02-18

1985-07-02

Murray, Richard

Facsimile and static presentation processing

Static presentation processing

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H04N 9535

Patent

active

045271895

ABSTRACT:
The invention provides a color image pickup device in which image light from a white object to be photographed or image light integrated by a diffusion plate or the like is incident on a pickup tube through an electrochromic element. Two primary color signals are separated from a video signal from the pickup tube, a voltage corresponding to a difference between the two primary color signals is detected by a differential amplifier, and the voltage is then applied across an electrochromic element. A spectral transmittance of which is then controlled, thereby achieving an optimal white balance.

REFERENCES:
patent: 4249197 (1981-02-01), van Spaandark et al.
patent: 4355325 (1982-10-01), Nakamura et al.
patent: 4395730 (1983-07-01), Shen

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