发明名称 |
Device and method for detecting position using electromagnetic induction without producing discrepancy caused by the residual induction voltage of the resonant circuit |
摘要 |
The present invention provides a method and a device for detecting position without producing discrepancy caused by residual induction voltage of a resonant circuit, wherein it includes steps for selecting and scanning one of a multiple loop coil positioned parallel to each other towards a detecting direction to receive an electromagnetic wave (S1), and calculating coordinate values of the indicated position provided by a position indicator based upon at least two detected induction voltages (S3), a direction for selecting and scanning of the loop coils is alternatively changed (S5, 6), and the coordinate values are averaged to eliminate the residual induction voltage effect (S8).
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申请公布号 |
US5763839(A) |
申请公布日期 |
1998.06.09 |
申请号 |
US19950506811 |
申请日期 |
1995.07.25 |
申请人 |
WACOM CO., LTD |
发明人 |
FUNAHASHI, TAKAHIKO;OBI, KATSUHITO |
分类号 |
G06F3/046;G06F3/033;G06F3/041;G06F3/048;(IPC1-7):G08C21/00;G09G3/02 |
主分类号 |
G06F3/046 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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