| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an interactive presentation system which can prevent a mark showing an instructing position from being hidden and an operation from becoming difficult to perform since the mark is overlapped with an index medium and it is interrupted. SOLUTION: The system is provided with a display means displaying a picture, the index medium giving an instruction to the picture and operating it, a coordinate calculating means calculating the instructing position of the index medium and a program code selecting/displaying the mark showing the instructing position of the index medium, which is calculated by the coordinate calculating means.</p> |
