| 摘要 |
<p>PURPOSE:To convert signals handwritten on a blackboard by a pen into an image signal and at the same time to draw other input image signals on the blackboard. CONSTITUTION:A record film 1 and a colored film 2 are adhered together for display of characters, etc. The signals given from an image memory 21 are controlled by a display control part 22. Both films 1 and 2 are adhered by a thermal head, and the image signals are displayed in the form of pictures. These pictures are erased after the film 1 is separated from the film 2 by a selaration/erasion roll 3. The drawn pictures are turned into electric signals by a CCD 14 and then converted into image signals by a CCD control part 26.</p> |
