| 摘要 |
A display system capable of displaying an image is modified with one or more elements that emit energy (140) that is outside the range of human perception, but within the range that is detected by the sensors used in a mechanical recording device (160). This energy could be in the infrared range of the electromagnetic spectrum. With this modification the display screen (110) will produce two simultaneous, or near simultaneous, images. The first image, seen by a human observer, will differ from the second image captured by the sensors of a recording device, such as a video camera.
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