| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a coordinate detecting device and method for judging an accurate touch point even when a plurality of coordinates are detected by an optical unit. <P>SOLUTION: This coordinate detecting device is provided with a distance calculating means for, when the coordinates of a plurality of touch points are simultaneously detected, setting the coordinates of a plurality of touch points detected on a touch panel as touch candidate points, and for calculating the distance of each touch candidate point from each optical unit based on the coordinates of each touch candidate point, a threshold resetting means for resetting a threshold to be used at the time of re-deciding each touch candidate point based on the distance from each optical unit calculated by the distance calculating means, and a touch point re-deciding means for comparing a light reception level with the threshold of each touch candidate point set by the threshold resetting means to re-decide whether or not it is a touch point. <P>COPYRIGHT: (C)2004,JPO</p> |
