Television – Camera – system and detail – Optics
Reexamination Certificate
2007-07-12
2010-02-16
Tran, Nhan T (Department: 2622)
Television
Camera, system and detail
Optics
C396S079000
Reexamination Certificate
active
07663688
ABSTRACT:
With a half press of a shutter button, a focus lens is moved from a near distance end to a far distance end of a predetermined search range, and AF evaluation values are calculated. Based on the AF evaluation values, a maximum evaluation value and a first lens position corresponding to the maximum evaluation value are detected. If the maximum evaluation value is larger than a threshold value and the first lens position is not located at the near distance end or the far distance end, the first lens position becomes an in-focus position. If the first lens position is, for example, at the near distance end, the focus lens is moved within an extended search range set on the near distance side, and the maximum evaluation value is obtained. A second lens position corresponding to the maximum evaluation value becomes the in-focus position.
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patent: 7499096 (2009-03-01), Yamazaki
patent: 2004/0212721 (2004-10-01), Watanabe
patent: 2005/0270410 (2005-12-01), Takayama
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patent: 6-160695 (1994-06-01), None
Diep Trung
FUJIFILM Corporation
McGinn IP Law Group PLLC
Tran Nhan T
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