Patent ID: 8599159

Claim:
A touch panel operation device, comprising: a display device configured to display selectable objects; a touch panel that is located on a display area of the display device and is configured to accept a touch operation of a user; and a controller that: detects a touch-on, the touch-on being a transition from state at which the touch panel detects the user not touching the touch panel to a state at which the touch panel detects the user touching the touch panel; detects a touch-off, the touch off being a transition from the state at which the touch panel detects the user touching the touch panel to the state at which the touch panel detects the user not touching the touch panel; sets a touch-off determination time; determines that the touch-off has occurred if the state at which the touch panel detects the user not touching the touch panel has continued for the set touch-off determination time or more after the touch-off was detected; when the user is touching the touch panel, acquires a touch coordinate that is a coordinate of a point on the touch panel that the user has touched; selects a selectable object corresponding to the acquired touch coordinate; scroll-displays on the display device the selected selectable object, based on a displacement of the acquired touch coordinate; determines whether the touch coordinate was acquired and displaced just before the touch-off was detected; and if the touch coordinate was acquired and displaced just before the touch-off was detected, sets the touch-off determination time to be longer than if the touch coordinate was acquired and not displaced just before the touch-off was detected.