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. 27, 2005
Filed:
May. 09, 2001
Yukio Mori, Hirakata, JP;
Seiji Okada, Hirakata, JP;
Tetsuo Mise, Hirakata, JP;
Shoichi Hasegawa, Osaka, JP;
Yukio Mori, Hirakata, JP;
Seiji Okada, Hirakata, JP;
Tetsuo Mise, Hirakata, JP;
Shoichi Hasegawa, Osaka, JP;
Sanyo Electric Co., LTD, Osaka, JP;
Abstract
An automatic exposure control camera always permits a subject to be photographed with appropriate brightness regardless of a front-lighted, back-lighted, or over-front-lighted condition. The area to be photographed is divided into 64 regions. The camera determines the average Yavof brightness over all the regions, the average YavUof brightness in the regions constituting the upper half, the average YavLof brightness in the regions constituting the lower half, the average YavDof brightness in regions in which brightness is lower than the average Yav, the average YavDof brightness in regions in which brightness is lower than the average YavD, the average YavBof brightness in regions in which brightness is higher than the average Yav, and the average YavBof brightness in regions in which brightness is higher than the average YavB. Based on the ratios between these averages, the camera distinguishes among a front-lighted, a back-lighted, and an over-front-lighted condition and controls the exposure of an image sensor accordingly.