Television – Camera – system and detail – Optics
Reexamination Certificate
2004-08-03
2009-08-04
Tran, Sinh (Department: 2622)
Television
Camera, system and detail
Optics
C348S350000, C396S102000
Reexamination Certificate
active
07570298
ABSTRACT:
An image-taking apparatus which reduces occurrence of unnatural focus changes is disclosed. The image-taking apparatus includes a first detector which outputs a first signal representing a focus state of an image-taking optical system based on a predetermined-frequency component of an output signal of the image-pickup device and a second detector which outputs a second signal different from the first signal. The image-taking apparatus also includes has a controller which performs a first focus control for controlling drive of the focus lens based on the first signal and a second focus control for controlling drive of the focus lens based on the second signal. The controller performs the second focus control in a case where an in-focus state cannot be achieved with the first focus control.
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Canon Kabushiki Kaisha
Cutler Albert H
Fitzpatrick ,Cella, Harper & Scinto
Tran Sinh
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