The pointing device which uses error prevention function, manner, and computer reading possible media (pointing device and manner which use error prevention function)

摘要

A pointing device and method include a pad occupying a region, a raised border at a perimeter of the region and an object slidably movable on the pad for contacting the border. A detecting device is configured to detect a physical contact by the object at any position on the border wherein contact with the border generates a signal indicating a contact position on the border.