White balance adjusting device

Details White balance adjusting device White balance adjusting device

1991-08-05

1992-09-08

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 41, H04N 973

Patent

active

051463164

ABSTRACT:
A white balance adjusting device includes an image sensing element for converting object light to an electrical signal, an amplifier for amplifying the electrical signal obtained by this image sensing element, a control voltage limiting circuit for limiting an output voltage range of a control voltage for this amplifier and a detector for detecting an amount of ambient light, wherein a range of limitation of the control voltage is made variable on the basis of an output of the ambient light amount detector.

REFERENCES:
patent: 4449487 (1985-02-01), Takayama et al.
patent: 4679066 (1987-07-01), Masunaga et al.
patent: 4739392 (1988-04-01), Ueda et al.
patent: 4739393 (1988-04-01), Seki et al.
patent: 4774564 (1988-09-01), Konishi
patent: 4827331 (1989-05-01), Nakamura et al.
patent: 4833525 (1989-05-01), Suzuki et al.
patent: 4847680 (1989-07-01), Okino
patent: 4918519 (1990-04-01), Suzuki et al.

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