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US 8,011,789 B2Granted
Rear projection display
AssigneeMitsubishi Electric Corporation
InventorTaisuke Murata
Life of this patent
Estimating the term…
Abstract
A rear projection display includes a projector for projecting light from a light source as an optical image, an exterior cabinet for enclosing the projector, a projection screen provided for the exterior cabinet on which the optical image is projected, and two or more optical sensors provided in a region where the optical image is projected from the projector other than an image display region.
Claims3
A rear projection display comprising:
- a projector configured to project light from a light source as an optical image;
- a cabinet configured to enclose said projector;
- a projection screen on which said optical image is projected;
- two or more optical sensors provided in a region where said optical image is projected from said projector other than an image display region;
- a projecting part configured to project a test image having detection points to be detected by said two or more optical sensors other than said image display region on said projection screen from said projector;
- a position calculating part configured to calculate the position of said test image projected from said projecting part on the basis of output signals from said two or more optical sensors;
- and
- a distortion correcting part configured to correct for a distortion of said test image on the basis of the result of the calculation made by said position calculating part.
5 more elements
Dependencies are inferred from the claim text.