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:
Jun. 12, 2012
Filed:
Aug. 20, 2010
Teruyuki Kojima, Tokyo, JP;
Teruyuki Kojima, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image sensing apparatus has focus state detection areas, photometry areas, a defocus amount obtaining unit that obtains a defocus amount of each focus state detection area, a photometry unit that obtains a photometric value of each photometry area, and a determination unit that determines a weighting coefficient for each photometry area. The photometry areas includes a first photometry area, corresponding to any of the focus state detection areas, for which the weighting coefficient is determined using a defocus amount of the corresponding focus state detection area, and a second photometry area for which the weighting coefficient is determined using the weighting coefficient for the first photometry area or the defocus amount of the focus state detection area corresponding to the first photometry area. The second photometry area includes one or more photometry areas, and, in a field area, the number of photometry areas below a first area for obtaining a photometric value in the first photometry area is greater than that above the first area.