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:
Aug. 18, 1992
Filed:
Apr. 15, 1991
Masaki Higashihara, Yokohama, JP;
Ichiro Ohnuki, Kawasaki, JP;
Akira Akashi, Yokohama, JP;
Terutake Kadohara, Yokohama, JP;
Hidehiko Fukahori, Yokohama, JP;
Yasuo Suda, Yokohama, JP;
Kenji Itoh, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An auto focusing device for foreseeing-calculating lens driving data for making a lens focus on an object after a predetermined time on the basis of the past focus adjusting operation data and the latest focus detection data. A plurality of distance measuring points are read to effect distance measurements at a time. Data suitable for foreseeing calculation is found from the respective distance measuring points, and the data suitable for foreseeing calculation is specified as the latest focus detection data used for the foreseeing calculation.