发明授权
- 专利标题： Security system
- 专利标题（中）： 保安系统
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申请号： US09762755申请日： 2001-02-12
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公开(公告)号： US06683527B1公开(公告)日： 2004-01-27
- 发明人: Jeremy John Greenwood
- 申请人： Jeremy John Greenwood
- 优先权： GB9818073 19980820
- 主分类号： G05B1900
- IPC分类号： G05B1900
摘要：
A security system which is suitable for use in a vehicle. The security system is a passive entry and passive re-mobilization system in which a security controller transmits a command signal LCs to a remote transponder, which replies with a LF response signal LRs. If an LF response signal is not received in response to the transmission of a command signal LCs, the security controller re-transmits the command signal, again as an LF command signal LCs. On determining that a command signal is a re-transmitted command signal, the remote transponder re-transmits the response signal as an UHF response signal URs.
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