发明名称 |
Rescue beacon |
摘要 |
A low power radio frequency transceiver is arranged to form a network of communicating low power radio frequency transceivers. It comprises a transmitter for transmitting packets of data and means for controlling the transmitter to transmit a series of messages of a first type outside the network of transceivers, for maintaining synchronisation.
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申请公布号 |
US2005118950(A1) |
申请公布日期 |
2005.06.02 |
申请号 |
US20050501249 |
申请日期 |
2005.01.31 |
申请人 |
ZECHLIN CHRISTIAN;BLOCK THOMAS |
发明人 |
ZECHLIN CHRISTIAN;BLOCK THOMAS |
分类号 |
H04B1/713;H04J3/06;H04L7/04;H04L12/56;(IPC1-7):H04B7/00 |
主分类号 |
H04B1/713 |
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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