| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a display device for notifying a presenter that a display screen is hidden behind without interrupting presentation, so that a participant can see a display screen. <P>SOLUTION: When no coordinate is input to an operation face of a transparent touch panel with a touch pen for a prescribed time T0 or more, and a presenter in front of the display region of a large LCD is detected by a pressure-sensitive mat, warning vibration is output to the presenter (S102 to S108). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
