Imaging apparatus and control method thereof

Details Imaging apparatus and control method thereof Imaging apparatus and control method thereof

2011-04-12

2011-04-12

Fuller, Rodney E (Department: 2862)

Photography

Exposure control circuit

C348S362000

Reexamination Certificate

active

07925153

ABSTRACT:
An imaging apparatus includes an image sensor, a diaphragm control unit configured to control an aperture value of a diaphragm, and an electronic shutter control unit configured to control an operation of an electronic shutter for adjusting a charge accumulation time of the image sensor by adjusting a driving timing of the image sensor, wherein, if driving of the diaphragm overlaps a charge accumulation time when the aperture value is changed from a first aperture value to a second aperture value, the electronic shutter control unit controls a time of charge accumulation corresponding to the second aperture value in the charge accumulation time such that a brightness of an image signal output from the imaging unit when the first aperture value is set and a brightness of an image signal output from the imaging unit when the second aperture value is set become approximately equal to each other.

REFERENCES:
patent: 5517243 (1996-05-01), Kudo et al.
patent: 7783189 (2010-08-01), Kubota
patent: 2008/0267608 (2008-10-01), Kubota

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