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:
Sep. 18, 2007
Filed:
Apr. 26, 2005
Hajime Fukui, Tokyo, JP;
Hajime Fukui, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image sensing device allows to shoot an image using correct object distance information and light emitting amount when the main light emitting amount upon shooting an object image is calculated by making the pre-light emission after the auto-focusing process. When a predetermined button independent of a release button is operated, a focusing process is executed first. Then, photometry is made while inactivating a strobe, and an exposure value is determined based on an object distance. Then, pre-light emission is made, light reflected by the object in the pre-light emission is measured, and the photometry result under the available light is subtracted from that in the pre-light emission, so as to obtain a brightness value of object reflected light of only the pre-light emission.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile