发明名称 |
Hands-free or keyless access authentication system, especially for motor vehicles, in which measurement of the distance of an access transponder or unit from the vehicle is made by measuring a signal phase shift |
摘要 |
<p>Method for distance measurement for hands-free access authentication systems, whereby distance measurement is based on determination of the phase shift of a measurement signal travelling over the radio path. The invention also relates to a corresponding system for implementation of the inventive method.</p> |
申请公布号 |
DE10337512(A1) |
申请公布日期 |
2005.03.24 |
申请号 |
DE2003137512 |
申请日期 |
2003.08.14 |
申请人 |
MIKROWELLEN-TECHNOLOGIE UND SENSOREN GMBH |
发明人 |
HOFBAUER, MARKUS |
分类号 |
B60R25/24;G07C9/00;(IPC1-7):E05B49/00;B60R25/00 |
主分类号 |
B60R25/24 |
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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