Television – Camera – system and detail – Optics
Reexamination Certificate
2004-09-08
2009-10-13
Ho, Tuan V (Department: 2622)
Television
Camera, system and detail
Optics
Reexamination Certificate
active
07602435
ABSTRACT:
An image-taking apparatus is disclosed which enables the accuracy of re-performance determination of in-focus search control to reliably maintain an in-focus state in response to a condition change after focusing is achieved. The image-taking apparatus comprise a first detector which outputs a focus evaluation value signal and a second detector which outputs a detection signal different from the focus evaluation value signal. The image-taking apparatus comprises a controller which performs a first control for controlling drive of the focus lens such that an in-focus position of the focus lens is searched for on the basis of the focus evaluation value signal. The controller obtains shift information which represents a shift state from an in-focus state based on the detection signal from the second detector after the first control, and performs processing associated with the re-performance of the first control based on at least the shift information.
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Canon Kabushiki Kaisha
Cowan Liebowitz & Latman P.C.
Ho Tuan V
Wang Kent
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