| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an information input/detection/display device capable of clearly showing a coordinate input operation state. SOLUTION: A light emitting means 101 emits light 103 in a direction approximately parallel with the face of a coordinate input/detection/display area 105. A light interrupting means 104 operated by a user interrupts the light 103 on a prescribed position of the area 105. A light receiving means 102 detects all or part of the light 103 emitted from the means 101. A signal processing means judges whether a warning signal is to be transmitted in accordance with the light detection state of the means 102. The user grasps the coordinate input operation state in accordance with the transmission state of a warning signal such as sound, light and vibration generated from a signal transmission means.</p> |
