发明名称 |
Electromagnetic Stylus for Operating a Capacitive Touch Panel |
摘要 |
When a user moves an electromagnetic stylus to a capacitive touch panel, a transceiving winding will detect the frequency of the capacitive touch panel. A synchronizing winding will oscillate to generate a signal having a frequency similar to that of the capacitive touch panel. An oscillator will amplify the signal generated by the synchronizing winding. A circuit board will process the signal amplified by the oscillator. Finally the transceiving winding will emit a wireless signal with a frequency similar to that of the capacitive touch panel to interfere with the electric (magnetic) field of the capacitive touch panel so as to detect a triggered coordinate of the capacitive touch panel.
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申请公布号 |
US2010053113(A1) |
申请公布日期 |
2010.03.04 |
申请号 |
US20080327813 |
申请日期 |
2008.12.04 |
申请人 |
WU CHENG-KO;WU MING-TSUNG |
发明人 |
WU CHENG-KO;WU MING-TSUNG |
分类号 |
G06F3/033;G06F3/0354 |
主分类号 |
G06F3/033 |
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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