Optics: image projectors – Distortion compensation
Reexamination Certificate
2005-12-13
2005-12-13
Nguyen, Judy (Department: 2851)
Optics: image projectors
Distortion compensation
C353S070000
Reexamination Certificate
active
06974217
ABSTRACT:
An automatic keystone correction which enables even an inexperienced user to easily obtain an image corrected using the keystone distortion during a tilted projection. The projector detects varying of its elevation angle by using an elevation detecting module. When the angle stops varying, the projector determines that the elevation adjustment by the user ends, and executes auto keystone correction of the input image according to the elevation angle.
REFERENCES:
patent: 5355187 (1994-10-01), Ogino et al.
patent: 5537168 (1996-07-01), Kitagishi et al.
patent: 5788355 (1998-08-01), Na
patent: 6362573 (2002-03-01), Helbing et al.
patent: 6481855 (2002-11-01), Oehler
patent: 6520647 (2003-02-01), Raskar
patent: 6686973 (2004-02-01), Su
patent: 2003/0068094 (2003-04-01), Kimura et al.
patent: 2004/0036844 (2004-02-01), Wood et al.
patent: A 7-270748 (1995-10-01), None
patent: A 8-9306 (1996-01-01), None
patent: A 10-111533 (1998-04-01), None
patent: 11-282438 (1999-10-01), None
patent: 2000-196978 (2000-07-01), None
patent: 2000-241874 (2000-08-01), None
patent: A 2001-69433 (2001-03-01), None
patent: 2001-186538 (2001-07-01), None
patent: 2001-339671 (2001-12-01), None
patent: A 2002-112148 (2002-04-01), None
patent: 2002-268142 (2002-09-01), None
Kimura Keishi
Koyama Takaaki
Nguyen Judy
Seiko Epson Corporation
Sever Andrew
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