Optical pointing device with variable focus

Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device

Reexamination Certificate

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Reexamination Certificate

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07339575

ABSTRACT:
A method and apparatus for focusing an image of a work surface on an optical sensor array in an optical pointing device. Light from a region of the work surface is captured by an imaging system incorporating an optical coupling system and the optical sensor array. The focus of the imaging system is adjusted in accordance with the distance between the optical pointing device and the work surface. The distance may be sensed, or inferred by adjusting the imaging system to maximize the focus of the image.

REFERENCES:
patent: 6081388 (2000-06-01), Widl
patent: 6211861 (2001-04-01), Rosenberg et al.
patent: 6281882 (2001-08-01), Gordon et al.
patent: 6369954 (2002-04-01), Berge et al.
patent: 6433780 (2002-08-01), Gordon et al.
patent: 6476970 (2002-11-01), Smith
patent: 6618038 (2003-09-01), Bohn
patent: 7122781 (2006-10-01), Rotzoll et al.
patent: 7161582 (2007-01-01), Bathiche et al.
patent: 2003/0028734 (2003-02-01), March et al.
patent: 2004/0017129 (2004-01-01), Hooley et al.
patent: WO 03069380 (2003-08-01), None
“Background”, <http://ise.stanford.edu/class/psych221/projects/99/klchan/background.html> Accessed May 17, 2004.
“Miniature AutoFocus Camera”. <http://www.1limited.com/tech/mac/index> Accessed May 17, 2004.
“Product: PDN-1000 Tunable Lens Units”. <http://www.varioptic.com/V2/products/autofocus/product—full—dn1000.htm> Accessed May 17, 2004.

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