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:
Dec. 06, 2005
Filed:
Sep. 25, 1998
Hitoshi Hashimoto, Sagamihara, JP;
Hitoshi Hashimoto, Sagamihara, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A subject image is formed on a CCD through an imaging optical system including a focusing lens. The output from the CCD is input, through an A/D converter and the like, to an AE processor circuit for performing an auto-exposure control processing and an AF processor circuit for obtaining an evaluation value for auto-focusing through a gate circuit. When a release operation is performed, a CPU drives the focusing lens and operates the AF processor circuit and the like at a high speed frame rate if the CPU determines, on the basis of brightness evaluation values from the AE processor circuit, that the brightness of the subject is equal to or higher than predetermined brightness, and drives the focusing lens and operates the AF processor circuit and the like with high precision at an ordinary frame rate if the CPU determines that the brightness of the subject is lower than the predetermined brightness, thereby performing auto-focusing.