| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a back projection type display device which enables a presenter to perform a natural and smooth presentation by arranging the buttons of menu or the like according to the height of the presenter, thereby simplifying the operation of the buttons of the menu or the like. <P>SOLUTION: This back projection type display device being a PC monitor, on which an optical touch panel input device is mounted, is provided with a location detection means for detecting the edge part of a key member by the optical touch panel input device. The location detection means can be arranged at an arbitrary location in a black frame area on a computer screen. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
