Digital camera using a focal-plane shutter

Details Digital camera using a focal-plane shutter Digital camera using a focal-plane shutter

2011-03-22

2011-03-22

Aggarwal, Yogesh K (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S227100, C348S228100, C348S229100, C348S362000

Reexamination Certificate

active

07911502

ABSTRACT:
A digital camera includes an image pickup device; a focal plane shutter including a shutter leading curtain and a shutter trailing curtain; a timer for measuring exposure time; a shutter controller which commences measurement of an exposure time when the shutter leading curtain starts traveling, and drives the shutter trailing curtain upon completing the exposure time measurement; and a charge readout controller which reads out electric charges accumulated by the image pickup device during the exposure time at least twice, first before the shutter trailing curtain commences traveling upon the shutter leading curtain commencing traveling and second upon the shutter trailing curtain commencing traveling. The charge readout controller carries out the electric charge readout, before the shutter trailing curtain commences traveling, at a scanning speed in synchronization with a travel speed of the shutter leading curtain in a same direction of the traveling shutter leading curtain.

REFERENCES:
patent: 2006/0087573 (2006-04-01), Harada
patent: 2007/0171293 (2007-07-01), Okamoto
patent: 2007/0195170 (2007-08-01), Yamamoto et al.
patent: 2007/0196091 (2007-08-01), Yamaguchi
patent: 2007/0196101 (2007-08-01), Maeda
patent: 11 234572 (1999-08-01), None
patent: 2000 180950 (2000-06-01), None
patent: 2005 348301 (2005-12-01), None
English language Abstract of JP 11-234572.
English language Abstract of JP 2000-180950.
English language Abstract of JP 2005-348301.

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