发明名称 |
Schlüssellose Zugangs- und/oder Fahrberechtigungskontrolleinrichtung für ein Kraftfahrzeug |
摘要 |
The controller has a transmitter-receiver unit in the vehicle and a mobile identification or ID transmitter (6). The transmitter-receiver unit has two different transmitter modules (2,3) for sending a signal to a LF radio path and a receiver unit for receiving a response signal transmitted by the ID transmitter, which contains a receiver part. Both the vehicle transmitter sending the signal and the antenna unit in the ID transmitter have two mutually orthogonal antenna coils (A1,A2,A3;B1,B2) driven differently wrt. at least one transmission parameter so that the spatial vectorial superimposition of the fields changes continuously. |
申请公布号 |
DE19845649(B4) |
申请公布日期 |
2008.06.19 |
申请号 |
DE1998145649 |
申请日期 |
1998.10.05 |
申请人 |
LEOPOLD KOSTAL GMBH & CO. KG |
发明人 |
PRETZLAFF, VOLKER;BLAESING, FRANK;RAAB, PETER;NIEDING, KLAUS |
分类号 |
B60R25/24;E05B85/00;G07C9/00;G08C17/02;H01Q1/32;H01Q21/29 |
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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