| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve selection operability of a button display part by a user and to prevent the erroneous selection of the button display part regardless of the erroneous selection by the user. SOLUTION: A display device 2 is arranged in a vehicle, and a driver switches a display picture based on the coordinate data showing a touch position outputted from a touch tracer 1 provided operatably by a driver and the on data showing the matter being depressed/operated. At this time, the display device 2 displays small the button display part for selecting next display operation in a displayed map picture, and expansibly displays the button display part displayed in the map picture according to the input state of the coordinate data from the touch tracer 1. Thus, since the user can recognize easily the display contents of the button display part, the selection operability of the button display part for the touch tracer 1 is improved.</p> |
