Focus control device, image pickup device, and focus control method

A region in a captured image is set as a signal detection region, and signals from an CMOS sensor of the rolling shutter exposure type are detected only in an exposure period corresponding to the signal detection region to produce an evaluated value, after which a focusing lens is moved to a focusin...

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Hauptverfasser:	ONO RIICHI, SHIMIZU SHUJI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
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creator	ONO RIICHI SHIMIZU SHUJI
description	A region in a captured image is set as a signal detection region, and signals from an CMOS sensor of the rolling shutter exposure type are detected only in an exposure period corresponding to the signal detection region to produce an evaluated value, after which a focusing lens is moved to a focusing lens position for acquiring a next evaluated value. Since the signal detection region is a partial region in the captured image, a long detection quiescent time is kept between signal detection periods corresponding to every two horizontal synchronizing periods. By moving the focusing lens in the detection quiescent time, the evaluated value is acquired and the focusing lens is moved in each horizontal synchronizing period.
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subjects	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
title	Focus control device, image pickup device, and focus control method
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