Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
June 16, 2009
Patent Application Number
11042049
Date Filed
January 26, 2005
Patent Primary Examiner
Patent abstract
The present invention provides an autofocus system for controlling the focus of a taking lens by specifying a subject to be autofocused within an AF area, which is part of the field of view of a camera, and automatically focusing on the subject, comprising: a target subject specifying device which specifies a target subject to be focused, a target subject movement detection device which detects the movement of the target subject specified by the target subject specifying device, within the field of view, and an AF-area altering device which alters the extent of the AF area to track the movement of the target subject detected by the target subject movement detection device.
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