Touch screen operation device, touch screen operation method, and corresponding computer program product

摘要

If a touch-off has been detected on a touch panel (14) that is placed on a display area of a display device (15) that displays a selectable object (61, 64 to 68), touch coordinates for a predetermined time before the touch-off was detected are acquired; it is judged based on the acquired coordinates whether the touch coordinate is displaced for the predetermined time before the touch-off was detected; and if it has been judged that the touch coordinate is displaced, a touch-off determination time is set longer than if it has been judged that the touch coordinate is not displaced. If a state in which a user is not touching the touch panel (14) has continued for the touch-off determination time or more, occurrence of the touch-off is determined.