发明名称 |
Driving circuit, electro-mechanical-acoustic transducer, and portable terminal apparatus |
摘要 |
<p>A circuit of the present invention is a driving circuit for driving a vibrator having a mechanical vibration system which resonates at a resonance frequency. The driving circuit outputs to the vibrator at least two signals of different frequencies which are included in a frequency range including the resonance frequency. The vibrator has a function of converting an electric signal into at least one of a sound and a vibration. <IMAGE></p> |
申请公布号 |
EP1045613(A2) |
申请公布日期 |
2000.10.18 |
申请号 |
EP20000107173 |
申请日期 |
2000.04.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAIKI, SHUJI;USUKI SAWAKO |
分类号 |
B06B1/02;B06B1/04;G10K9/13;H04R9/18;(IPC1-7):H04R9/18 |
主分类号 |
B06B1/02 |
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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