| 摘要 |
Some electronic devices project video images onto a display surface that is external to the electronic device, and adjust the projected images to compensate for brightness and/or color of the display surface. An electronic device can include a video generator, a video projector, a camera, a calibration controller. The video generator can generate a video signal, and the video projector can project a video image in response to the video signal onto a display surface that is external to the electronic device to cause reflection of the video image. The camera can sense the reflected video image from the display surface. The calibration controller can adjust brightness and/or color of a subsequent video image that is projected by the video projector to compensate for differences between the video signal and the reflected video image sensed by the camera.
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