Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1989-04-12
1991-06-04
Chin, Tommy P.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 28, 358 41, H04N 904, H04N 973
Patent
active
050218743
ABSTRACT:
A white balance adjusting device is disclosed for use in a camera which picks up an image of a field and creates a video signal representing the field. In the white balance adjusting device, the white balance of the video signal can be adjusted by control device in accordance with the color temperature signal that is detected by a color temperature detecting device and the light measurement signal that is obtained from a light measuring device. The control device judges that the weather is fine when the brightness of the field is equal to or greater than a given value and a color temperature detected is higher than the color temperature of the direct light of the sun, and performs a control operation so that the white balance adjustment can be achieved in accordance with the color temperature that corresponds to the fine weather. Therefore, according to the white balance adjusting device, the white balance adjustment can be carried out with accuracy even when taking a picture under the normal light in fine weather.
REFERENCES:
patent: 4249197 (1981-02-01), Van Spaandonk
patent: 4490487 (1985-02-01), Takayama
patent: 4590512 (1986-05-01), Kondo
patent: 4605955 (1986-08-01), Hashimoto
patent: 4727413 (1988-02-01), Miura
patent: 4750032 (1988-06-01), Nakayama
patent: 4774564 (1988-09-01), Konishi
patent: 4805011 (1989-02-01), Sase
Chin Tommy P.
Fuji Photo Film Co. , Ltd.
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