This invention provides an input apparatus which can correctly recognize and accept hand-written characters as soon as they are input without using such an input device as an optical character reader or a keyboard. when characters, etc., are written using a writing instrument having a pen grip (22) fitted...http://www.google.com/patents/US6330359?utm_source=gb-gplus-sharePatent US6330359 - Pen-grip type of input apparatus using finger pressure and gravity switches for character recognition
