DISPLAY DEVICE, CONTROL METHOD AND PROGRAM THEREOF

摘要

When a touching object has touched a touch panel, a reference point position RP, a dead zone DZ, and a scroll target position SP* are set based on a touch position TP (S110 to S130); when the touch position TP has moved outside the dead zone DZ, the scroll target position SP* is updated with the touch position TP (S200) and unit scroll control is executed to control a display such that the reference point position RP moves toward the scroll target position SP* (a displayed image is scrolled) (S220); wherein, when the touch position TP has moved outside the dead zone DZ, the dead zone DZ is updated such that the position between the touch position TP and the reference point position RP just before the unit scroll control is executed becomes the center position of the dead zone DZ (S230).