发明名称 |
Bifunctional earphone set |
摘要 |
In construction of an earphone set incorporating a vibratory membrane accompanied with a ceramic wafer, a coactive magnetic electroacoustic conversion is arranged facing the vibratory membrane in a manner such that the vibratory membrane reproduces human voices on receipt of corresponding electric acoustic signals whereas the conversion unit issues electric acoustic signals on collection of corresponding human voices at the vibratory membrane.
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申请公布号 |
US5430803(A) |
申请公布日期 |
1995.07.04 |
申请号 |
US19930033031 |
申请日期 |
1993.03.19 |
申请人 |
SOEI ELECTRIC CO., LTD. |
发明人 |
KIMURA, HIROFUMI;OHSAKO, MASAKIYO |
分类号 |
H04M1/05;H04R1/10;H04R1/46;H04R17/02;(IPC1-7):H04R25/00 |
主分类号 |
H04M1/05 |
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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