| 摘要 |
A rear projection display device includes a screen, an image-processing unit for receiving an image signal, an optical projection unit forming an image light beam and projecting the light beam to form a projected image on the screen, a photo detection unit for sensing the projected image and outputting a corresponding detection signal, a driver for controlling the optical projection unit to correct the projected image, and a control unit for receiving the detection signal to determine whether there is a distortion of the projected image, and for performing control the image-processing unit or the driver to correct the distortion of the projected image automatically.
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