发明名称 |
Position detector of a position detection system |
摘要 |
A position detection system includes a position pointer and a position detector. The "blind" area in which a position pointed to by a position pointer is undetectable is minimized. A transmission coil selector selects one of a plurality of transmission coils. A signal is generated by a transmission signal generator and supplied to a selected transmission coil. The selected transmission coil transmits the signal to the position pointer. A reception sensor coil selector selects a plurality of sensor coils. A position-indicating signal transmitted from the position pointer is received by each selected sensor coil, and a position pointed to by the position pointer is calculated from the received position-indicating signals. The position detection system loop coils are part of a resonant LC transmission circuit and are excited with a pulsed carrier signal to maximize the strength of the transmission signal, while dissipating relatively little power.
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申请公布号 |
EP1462922(A2) |
申请公布日期 |
2004.09.29 |
申请号 |
EP20040006922 |
申请日期 |
2004.03.23 |
申请人 |
WACOM CO., LTD. |
发明人 |
ODA, YASUO;HORIE, TOSHIHIKO |
分类号 |
G06F3/046;G06F3/033;(IPC1-7):G06F3/033 |
主分类号 |
G06F3/046 |
代理机构 |
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主权项 |
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地址 |
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