Touch-sensitive tablet

摘要

When an instructing means (F) such as a finger moves along a flat surface (7) of a touch-sensitive tablet (TSP1), a touch tablet (11, 12) generates an input signal (Sc) indicative of information of points touched with the instructing means (F) on the flat surface (7). A frame (6) is provided around the touch tablet (11, 12) with a predetermined gap (G) measured from the edge thereof. A maximum movable range of the instructing means (F) on said flat surface (7) is defined by the frame (6). The predetermined gap (G) is determined such that the instructing means (F) can touch the periphery of the flat surface (7) even when the movement of the instructing means (F) is restricted by the frame (6).