发明名称 |
Position detecting device and position input device |
摘要 |
A position detecting device is provided, which is configured to minimize leakage of magnetic flux in an electromagnetic induction system. The position detecting device includes: a sensor unit including a plurality of first loop coils arranged in a first direction and a plurality of second loop coils arranged in a second direction intersecting with the first direction; a yoke sheet provided on a side of the sensor unit that is opposite to a side that faces a position indicator; an auxiliary loop coil provided at a corner part of the sensor unit; a signal transmitter configured to transmit a signal to one of the coils in order to generate a magnetic field to induce an induced current in a coil of the position indicator; and a controller configured to select one of the coils, and to control whether to transmit a signal from the signal transmitter to the selected one of the coils or to make the selected one of the coils receive a signal from the position indicator. |
申请公布号 |
US8665211(B2) |
申请公布日期 |
2014.03.04 |
申请号 |
US201113045319 |
申请日期 |
2011.03.10 |
申请人 |
KITAHARA NORIYUKI;CHAO KE;WACOM CO., LTD. |
发明人 |
KITAHARA NORIYUKI;CHAO KE |
分类号 |
G09G5/00 |
主分类号 |
G09G5/00 |
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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