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. 07, 2005
Filed:
Feb. 24, 2004
Hajime Fukui, Tokyo, JP;
Hajime Fukui, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This disclosure relates to performing proper strobe light photographing which is almost free from the influence of the object reflectance and an autofocus detection error. This disclosure includes a first calculation unit which calculates first photometry data on the basis of a photometry value obtained by a photometry unit for measuring light reflected by an object to be photographed by preliminary emission, an object distance detection unit (#) which detects object distance information, a second calculation unit (#) which calculates proper second photometry data corresponding to the object distance information, a third calculation unit (#and #) which calculates third photometry data on the basis of the calculation results of the first and second calculation units, and a control unit (#to #) which controls an main emission amount and performs strobe light photographing on the basis of the calculation result of the third calculation unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile