发明名称 |
Position detecting apparatus and method for detecting position pointing device |
摘要 |
A position detecting apparatus capable of detecting position pointing devices of any combination simultaneously out of plural position pointing devices, thereby providing a user a friendly apparatus. A frequency of a resonance circuit provided inside a position pointing device is set by a command signal transmitted from a tablet, causing plural position pointing devices placed on the tablet to have a different frequencies, thereby suppressing electromagnetic interference among position pointing devices on the tablet, so that a simultaneous detection becomes available.
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申请公布号 |
US6005555(A) |
申请公布日期 |
1999.12.21 |
申请号 |
US19970840617 |
申请日期 |
1997.04.30 |
申请人 |
WACOM CO., LTD. |
发明人 |
KATSURAHIRA, YUJI;SEKIZAWA, YASUSHI |
分类号 |
G06F3/041;G06F3/033;G06F3/046;(IPC1-7):G09G5/00 |
主分类号 |
G06F3/041 |
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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