Automatic focusing device, camera, and automatic focusing...

Details Automatic focusing device, camera, and automatic focusing... Automatic focusing device, camera, and automatic focusing...

2006-05-16

2006-05-16

Ho, Tuan (Department: 2615)

Television

Camera, system and detail

Optics

Reexamination Certificate

active

07046289

ABSTRACT:
An automatic focusing device capable of focus detection so that the in-focus state can be adequately realized, even if the magnification changes or a camera shake occurs. The sum total of the absolute values of the differences between two pixels in an evaluation area is calculated, the sum total of the square values of the differences between the two pixels in the evaluation area is calculated, and the evaluation value is obtained based on the sum total of the absolute values of the differences and the sum total of the square values of the differences to obtain the in-focus position of the taking lens.

REFERENCES:
patent: 4561750 (1985-12-01), Matsumura
patent: 5410383 (1995-04-01), Kusaka et al.
patent: 6933978 (2005-08-01), Suda
patent: 03-287106 (1991-12-01), None
patent: 07-318795 (1995-12-01), None

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