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:
Apr. 06, 2010
Filed:
Dec. 08, 2005
Applicant:
Seiya Ohta, Tochigi-ken, JP;
Inventor:
Seiya Ohta, Tochigi-ken, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 13/00 (2006.01); G03B 3/00 (2006.01); H04N 5/232 (2006.01); H04N 5/225 (2006.01);
U.S. Cl.
CPC ...
Abstract
In the case of a camera system capable of exchanging lenses, a camera can realize a preferable automatic focus adjustment performance even if an exchangeable lens, its lens state, different combination between lens and camera or image pickup state is changed by changing a frequency to be extracted by focus detection means in accordance with the identification information on the exchangeable lens.