Photography – With exposure objective focusing means – focusing aid – or... – Lens drive circuit or motor structure
Reexamination Certificate
2008-08-13
2011-10-11
Perkey, W. B. (Department: 2862)
Photography
With exposure objective focusing means, focusing aid, or...
Lens drive circuit or motor structure
C396S093000
Reexamination Certificate
active
08036524
ABSTRACT:
Disclosed is an apparatus and method for auto-focusing a camera, which includes the steps of detecting an initial value of an encoder by measuring an initial position of a lens system, matching the measured initial value of the encoder with the initial position value of the lens system to be moved, measuring a distance value of a subject through a distance measuring sensor, determining a displacement that a focus lens has to be moved with respect to the measured distance value, and adjusting a position of the focus lens such that a position value of the focus lens actually moved is the same as the displacement value.
REFERENCES:
patent: 4908647 (1990-03-01), Ueyama
patent: 5155347 (1992-10-01), Nishibe
patent: 5325145 (1994-06-01), Hirasawa
patent: 5502537 (1996-03-01), Utagawa
patent: 5574535 (1996-11-01), Ogasawara
patent: 5615397 (1997-03-01), Shiomi et al.
patent: 5890021 (1999-03-01), Onoda
patent: 5895129 (1999-04-01), Ohta
patent: 5946504 (1999-08-01), Hirasawa et al.
patent: 5966550 (1999-10-01), Oono et al.
patent: 5999746 (1999-12-01), Kitagawa
patent: 7480453 (2009-01-01), Lin
patent: 2006/0078323 (2006-04-01), Nakahara
patent: 2006/0119732 (2006-06-01), Ohta
patent: 2007/0280666 (2007-12-01), Nakahara
patent: 2009/0085558 (2009-04-01), David et al.
patent: 1188904 (1998-07-01), None
patent: 1444391 (2003-09-01), None
patent: 1463305 (2004-09-01), None
patent: 2266781 (1993-11-01), None
Kim Myoung-Won
Lee Hae-Sun
Lee Yong-Gu
Yoon Young-Kwon
Adams Bret
Cha & Reiter LLC
Perkey W. B.
Samsung Electronics Co,. Ltd.
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