The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 2006
Filed:
Aug. 24, 2000
Hirofumi Takei, Yokohama, JP;
Hirofumi Takei, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is control relating to autofocusing in an image sensing apparatus having an image sensing unit for photoelectrically converting an optical image of a subject to obtain an image signal representing the subject, and an autofocus function, the apparatus being capable of performing photography using a fill-in light emission unit. Control includes setting a charge accumulation period of the image sensing unit, deciding light-emission time of the fill-in light emission unit based upon the charge accumulation period that has been set, performing control in such a manner that the fill-in light emission unit is caused to emit light for the decided light-emission time in sync with start of the charge accumulation period, and performing focusing control based upon the image signal obtained from the image sensing unit. Control of the fill-in light emission unit is executed repeatedly during control of focusing.