| 摘要 |
<p>PURPOSE:To prevent erroneous input from being performed by changing the display color of a touch field corresponding to inputted touch coordinate information when touch information exists, and deciding the touch field changed just before as an operating field when no touch information exists. CONSTITUTION:A touch screen device 2 of photoelectric system is attached on the screen of a CRT display device 1, and outputs information DA representing the X and Y coordinates of a touch position and information DT representing the presence/absence of touch. When an operator performs a touch operation, a touch screen input means 3 identifies the touch field corresponding to the touch position, and outputs a signal to switch the display color directly, or selection field information to a display control means 4 via an interactive control means 5, and displays it on the CRT1. Therefore, the operator can select a desired field by completing the touch as observing the touch field in performing visually, thereby, it is possible to prevent the erroneous input from being performed.</p> |
