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:
May. 04, 2004
Filed:
Jun. 12, 1997
Applicant:
Inventor:
Hiroto Ohkawara, Toride, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/262 ; H04N 5/232 ;
U.S. Cl.
CPC ...
H04N 5/262 ; H04N 5/232 ;
Abstract
An image pickup apparatus has a lens unit detachably mounted on a camera body. A zoom ring is rotatably arranged on the lens unit. A magnification varying action of a zooming lens is controlled by a lens microcomputer according to the rotation of the zoom ring detected by a rotation detecting circuit. The magnification varying action can be controlled also by a camera-body microcomputer according to the operation of a zoom switch disposed on the side of the camera body. The magnification varying action by the zoom ring has priority over the magnification varying action by the zoom switch.