| 摘要 |
<p>A control system changes a first image displayed on a display module (40) to a second image. The display module comprises a matrix of display elements (42) each of which has a light and a dark state. The system includes means for storing data defining the first image and means for selecting data defining the second image. The first image data and the second image data is compared to determine which display elements must change their state to display the second image.</p> |
