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:
Aug. 23, 2011
Filed:
Mar. 29, 2010
Tomoya Yamashita, Yokohama, JP;
Tomoya Yamashita, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image pickup apparatus capable of obtaining a satisfactory picked up image, even if a light emission device cannot emit the requested light amount. When notified that at least one of slave flash devices is unable to emit a set amount of light, a master flash device recalculates amounts of light emission of the flash devices based on a possible light emission amount of a flash device having a maximum deficiency of light amount relative to a set light emission amount, thereby maintaining light amount ratios at the time of multiple flash photographing.
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