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:
Feb. 14, 2006
Filed:
Sep. 16, 2003
Shigeki Sato, Tochigi, JP;
Toru Kawai, Kanagawa, JP;
Masanori Ishikawa, Tokyo, JP;
Seiichi Kashiwaba, Tochigi, JP;
Shigeki Sato, Tochigi, JP;
Toru Kawai, Kanagawa, JP;
Masanori Ishikawa, Tokyo, JP;
Seiichi Kashiwaba, Tochigi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A camera system which is capable of performing highly accurate focusing in a short time by using two kinds of AF methods, is disclosed. The camera system calculates the target driving amount of the focusing lens based on the result of detection by a first focus detection unit, and performs a first driving control to drive the focusing lens toward a position corresponding to the target driving amount and a second driving control to drive the focusing lens based on the result of detection by the second focus detection unit. When the remaining driving amount to the target driving amount of the focusing lens by the first driving control becomes a predetermined amount, the camera system switches from the first driving control to the second driving control without stopping the focusing lens.