| 摘要 |
An electronic blackboard system is composed of: angle irons fixed to an information writing board or to a wall surface above the information writing board; a guide rail which is secured to the angle irons and extends horizontally; a driving unit placed on the guide rail, the driving unit moving horizontally; a photoelectric conversion device for converting written information into electrical signals; a memory for storing image information of one picture; a hard-copy device for recording the image information; and a roller secured to the photoelectric conversion device, the roller rolling while in contact with the information writing board. In the thus constructed electronic blackboard system, it is possible to read information written on an existing information writing board which may even be attached to a wall.
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