Auto focus methods and auto focus devices for electronic...

Details Auto focus methods and auto focus devices for electronic... Auto focus methods and auto focus devices for electronic...

2005-04-05

2009-02-03

Tran, Nhan T. (Department: 2622)

Television

Camera, system and detail

Optics

C348S349000, C348S240300

Reexamination Certificate

active

07486331

ABSTRACT:
Auto focus methods for electronic cameras are disclosed. The method of the present invention obtains and compares evaluation values (high frequency component (HFC)) corresponding to desired image signals from left or right locations relative to a center of a zoom lens of an electronic camera, thereby locating the maximal evaluation value. The location corresponding to the located maximal evaluation value is an optimum focus location.

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patent: 2004/0263674 (2004-12-01), Koreki
patent: 79103038 (1979-04-01), None

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