System for autofocusing a moving object

Details System for autofocusing a moving object System for autofocusing a moving object

2005-01-26

2009-06-16

Ho, Tuan V (Department: 2622)

Television

Camera, system and detail

Optics

C348S349000, C348S346000

Reexamination Certificate

active

07548269

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.

REFERENCES:
patent: 5739857 (1998-04-01), Kaneda
patent: 7250974 (2007-07-01), Koyanagi
patent: 2003/0117516 (2003-06-01), Ishida et al.
patent: 60-253887 (1985-12-01), None
patent: 61-39011 (1986-02-01), None
patent: 5-80248 (1993-04-01), None
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patent: 60-245132 (1994-09-01), None
patent: 2000-188713 (2000-07-01), None
patent: 2002-365519 (2002-12-01), None

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