20. An apparatus according to claim 19, wherein said character processing means comprises: a recognition dictionary for storing standard patterns corresponding to individual characters; and a recognition control means for accessing said recognition dictionary, based on the coordinate data from said coordinate detector, to recognize a corresponding character.
21. An apparatus according to claim 20, wherein said recognition control means further comprises: a coordinate memory; the coordinate data output from said coordinate detector comprises X and Y coordinates; and said recognition control means compares the current X and Y coordinates outputted from said coordinate detector with the X and Y coordinates previously outputted from said coordinate detector, and stores the current X and Y coordinates into said coordinate memory as updated coordinates only when the difference between the current X and Y coordinates and the previous X and Y coordinates exceeds a predetermined value.