| 摘要 |
<p>PURPOSE:To prevent an error of the position signal which is produced by the tilt of a stylus pen by having a double layer structure of a lamination of sensing surfaces of different wiring patterns for an electromagnetic coupling tablet. CONSTITUTION:A double layer electromagnetic coupling tablet is formed with the 1st sensing surface 6 where sense lines X1-Xn of the X side and sense lines Y1-Yn of the Y side are wired orthogonally to each other and the 2nd sensing surface 12 formed with X and Y side twist loops 13 and 14 forming a twist pattern having adverse loop every adjacent regions by folding a sense line and crossing it at the boundary of the detected unit regions. A control circuit 10 detects the position that is indicated by a stylus pen 11 in accordance with the levels of signals sent from the X and Y side sense lines. Thus it is possible to detect an accurate relative position despite of the tilt of the pen 11.</p> |
