| 摘要 |
A method and apparatus for generating a video signal representing an image of a scene, by: providing a photodetector having a light sensitive surface with a given area; providing a first focusing lens; positioning the first lens to focus an image of a scene on the photodetector so that only a portion of the image is focused on the light sensitive surface; and effecting relative displacement between the first lens and the photodetector parallel to the light sensitive surface in order to change the portion of the image that is focused on the light sensitive surface.
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