| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve problems with a conventional touch sensor wherein, since it needs wiring over the entire detection surface, the transparency of the detection surface deteriorates and wherein, since the wiring portion gathers electromagnetic noises from outside, enlargement of the touch sensor is difficult. <P>SOLUTION: The periphery of an interactive board is surrounded by an oval light-reflecting part 7 of which inside consists of a reflection member. Among two focuses of the light-reflecting part 7, a light emitting means 4 is provided to one and a light receiving means 5 to the other. When directions are performed on the interactive board with a direction means 1, such as a finger, a pen, the direction means 1 shields light scanned by the light emitting means 4, and thereby, depending on the scanning angle of the light emitting means 4, a direction coordinate position 3 can be detected by the direction means 1 on the interactive board. By providing two interactive boards to two regions sectioned by a straight line connecting the light emitting means 4 and the light receiving means 5, two direction coordinate positions 3 by the direction means 1 on the interactive boards can be simultaneously detected using a pair of the light emitting means 4 and the light receiving means 5. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
