Video camera with white balance control having the function of i

Details Video camera with white balance control having the function of i Video camera with white balance control having the function of i

1991-08-29

1993-11-30

Powell, Mark R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 973

Patent

active

052670260

ABSTRACT:
In a video camera capable of regulating the white balance by relative regulation of the gains of plural color signals obtained from the light coming from an object, a control signal for controlling the white balance regulating operation is formed according to color temperature information, and the formation of the control signal is suspended according to the result of discrimination whether the control signal is within a predetermined range, whereby the time required for regulating operation is shortened. Also in case the object color is identified to contain a deviation to a particular color, the control signal is replaced by another value. In this manner the white balance control utilizing the image signal is enabled ever under a special light source for a special object.

REFERENCES:
patent: 4797733 (1989-01-01), Takagi et al.
patent: 4883360 (1989-11-01), Kawada et al.
patent: 4922330 (1990-05-01), Saito et al.
patent: 4954884 (1990-09-01), Nakayama et al.
patent: 5021875 (1991-06-01), Iida et al.
patent: 5038205 (1991-08-01), Kondo et al.

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