| 摘要 |
PROBLEM TO BE SOLVED: To realize automatic exposure adjustment control that is unaffected by smears by accurately calculating the amount of the smears even if a weak smear phenomenon that does not reach a saturation level occurs without performing countermeasures against a change in dark current of a vertical OP (operational amplifier), the behavior of dark noise and defective pixels of the vertical OP in an image pickup device control system of an electronic shutter/lens diaphragm/automatic gain control. SOLUTION: When a smear is detected, a first electronic shutter speed and a first lens diaphragm value are measured, a first color information integrated value of each of red, green and blue is measured in a prescribed colorimetric area of an effective pixel region of an imaging means, and the electronic shutter speed is accelerated by prescribed quantity so as to make an exposure value equal to that of the first electronic shutter speed and the first lens diaphragm value. The lens diaphragm is opened as much as the prescribed quantity, second color information integrated values of red, green and blue are measured in the colorimetric area, and the amount of the smear is calculated from the red, green and blue color information integrated values. COPYRIGHT: (C)2004,JPO
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