When a handwritten character is inputted with a pen of a pen input device, a handwritten character recognition unit recognizes the character according to coordinate data of the character. Also, a handwritten area judge unit judges the size of the character and a blank area according to a range of preset...http://www.google.de/patents/US5513278?utm_source=gb-gplus-sharePatent US5513278 - Handwritten character size determination apparatus based on character entry area
