发明名称 |
Emergency population alert system having population distributed local radio receivers with transmitter sub carrier alert sending and receivers within reception zone detecting alert. |
摘要 |
<p>The population alert system has a receiver information system and a transmitter. The transmitter emits on local radio frequencies, emitting an alert on a sub carrier frequency. The receivers are previously distributed to receive the alert message within a zone at risk.</p> |
申请公布号 |
FR2804782(A1) |
申请公布日期 |
2001.08.10 |
申请号 |
FR20000001613 |
申请日期 |
2000.02.04 |
申请人 |
N B DISTRIBUTION |
发明人 |
BOIZARD JEAN CLAUDE |
分类号 |
G08B27/00;(IPC1-7):G08C17/02 |
主分类号 |
G08B27/00 |
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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