| 摘要 |
Apparatus comprising a touch sensitive screen having a face adapted to receive a user's hand-writing via a hand-held stylus, wherein the screen comprises means exciting the screen to vibrate so as to transmit the vibration to the stylus to simulate the sensation of a writing implement writing on paper as the stylus is moved over the face of the screen. The apparatus may comprise means for period modulating the electrical signal applied to the exciting means and means for amplitude modulating the electrical signal. The apparatus may comprise means for sensing the velocity of movement of the stylus over the screen face and means for modulating the vibration according to the sensed velocity. |
