| 摘要 |
<p>PURPOSE:To faciliate the input of graphic with simple constitution without the need of pressing pressure by designation a position without bringing an instruction means into contact with a light transmission plate. CONSTITUTION:An illumination means 111 illuminates respective positions on one surface of the light transmission plate 101 by the light beams of respectively different colors and the instruction means 121 designates the position by bringing it into contact with the other surface of the light transmission plate 101. Light dispersed n a part where the light transmission plate 101 is brought into contact with the instruction means 121 is guided into a color sensing means 131 and it sense the color of the dispersed light. A conversion means 141 outputs a coordinate showing the position corresponding to the color which the output of the color sensing means 131 shows. The coordinate of the position which the instruction mans 121 designates is obtained as the output of the conversion means 141 as a whole. Thus, the input of the graphic is facilitated with simple constitution without the need of compression.</p> |
