| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the position confirming accuracy and to increase the battery life of a cursor pen. SOLUTION: This graphic board consists of a cursor pen 1 which has a output coil that outputs the position and state signals, a panel 2 which has a sensor and a sensor circuit, and a signal processing circuit 3 which has a processing circuit that detects the position and state signals sent from the pen 1 and confirms the position and the operating message of the pen 1.</p> |
