| 摘要 |
<p>PURPOSE:To prevent the dirt on a touch panel surface due to the preceding user by providing a screen on the panel surface and periodically moving it. CONSTITUTION:A device is provided with a display part 1 on which operation contents are displayed, a touch panel part 2 operated by a user, a screen 3 which prevents the user from directly touching the touch panel part, a light emitting part 4 which detects a touch position on the touch panel part 2 with a light, and a driving circuit 8 which controls a driving source 7. The position on the touch panel touched with user's hand is detected by photodetectors in a light receiving part 5 which are arranged on X and Y axes, and a command is transmitted to a control part, and a screen moving command is issued from the control part and is sent to the driving circuit when a series of user's operations are completed or if the user does not exist over a certain time. Thus, the dirt on the normally touched touch panel surface is eliminated.</p> |
