Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Reexamination Certificate
2011-03-15
2011-03-15
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Distortion compensation
For projection axis inclined to screen
C353S069000
Reexamination Certificate
active
07905607
ABSTRACT:
A projector includes an adjusting leg section configured to be capable of protruding/retracting outside/inside an exterior chassis and changing a tilt condition of the projector, an interlocking device that displaces based on the protruding/retracting movement of the adjusting leg section, a variable resistance device that has a resistance that varies based on displacement of the interlocking device, a voltage detection device that detects a voltage based on the resistance of the variable resistance device, a storage device that stores keystone distortion correction amount information, and a keystone distortion correction device that obtains a keystone distortion correction amount from the keystone distortion correction amount information based on the voltage detected by the voltage detection device, and that corrects the keystone distortion of the projection image using the keystone distortion correction amount.
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Nakano Hirohisa
Otsuki Nobuyuki
Takatsu Susumu
Epps Georgia Y
Le Bao-Luan
Oliff & Berridg,e PLC
Seiko Epson Corporation
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