| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate the need of the manual adjustment of a circuit constant on a tablet side by receiving an electromagnetic wave via antennas in a tablet and detecting tool force which an electronic pen applies to the tablet or paper arranged on the tablet with the change of the electromagnetic wave. SOLUTION: The tablet 1 is connected to an external computer with RS232C of wire, and a control part 4 exchanging information with the computer and a writing pressure/position detection pat 5 receiving a writing pressure signal from the electronic pen 2 are arranged in the tablet 1. Plural signal reception antennas are provided in the writing pressure/position detection part, and the electromagnetic waves are received through the signal reception antennas. Thus, writing pressure which the electronic pen 2 applies on paper arranged on the tablet 1 is detected with the change of the electromagnetic wave. Thus, the adjustment of the circuit constant by means of the manual operation can be eliminated on the tablet 1-side, and production cost can be reduced.</p> |
