Optics: image projectors – Distortion compensation – For projection axis inclined to screen
Reexamination Certificate
2008-09-11
2011-10-18
Epps, Georgia (Department: 2878)
Optics: image projectors
Distortion compensation
For projection axis inclined to screen
C353S101000, C348S746000, C348S747000
Reexamination Certificate
active
08038303
ABSTRACT:
Disclosed is a projection apparatus including: a video display control section53to project and display a video according to input video data; and a projection distance obtainment section14to irradiate to a projection plane where the video is projected with a laser and displayed by the video display control section53, and to obtain a projection distance to the projection plane, wherein when the projection distance is obtained by the projection distance obtainment section14, the video display control section53adjusts a display status of at least a first video area66corresponding to a laser ranging point63which is an area where the laser is irradiated to a display status for obtaining the projection distance so that the distance from the projection apparatus to the projection plane can be measured fast and with high accuracy.
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Casio Computer Co. Ltd.
Cruz Magda
Epps Georgia
Holtz Holtz Goodman & Chick PC
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