| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical touch panel input device capable of concurrently receiving indication inputs of two indication positions, and outputting two types of indication position information showing each of the indication positions. <P>SOLUTION: The two types of indication position information of the first indication position and the second indication position are concurrently outputted by detecting X and Y coordinates of the first indication position, and then detecting the second indication position from blocked positions of X and Y scanning optical paths excluding X and Y optical paths blocked at the first indication position. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
