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. 25, 1990
Filed:
Aug. 14, 1989
Koji Takahashi, Kanagawa, JP;
Susumi Kozuki, Tokyo, JP;
Hirokazu Mogi, Saitama, JP;
Hideo Kawahara, Saitama, JP;
Hideyuki Arai, Kanagawa, JP;
Katsushi Suzuki, Tokyo, JP;
Toshiaki Mabuchi, Tokyo, JP;
Takashi Kobayashi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
Disclosed is an interchangeable lens system which comprises an interchangeable lens and a camera. The interchangeable lens includes a driving circuit controlled by data transmitted from the camera to the lens such that it displaces a controlled member of the lens, a detection circuit for detecting a displacement of the driving circuit, and a correction circuit for converting the output characteristics of the detection circuit into predetermined common characteristics. The camera includes a control circuit for driving the driving circuit in the interchangeable lens in response to the output of the detection circuit in the interchangeable lens.