发明名称 |
Method for secure data communication |
摘要 |
Modulated radio signals are transmitted between transceivers (T1,T2) of a vehicle base unit and mobile ID transmitter of passive entry systems. The carrier frequency of the radio signals is temporally varied, preferably within band limits, and synchronized among the transceivers. The carrier frequency may be varied synchronously and in phase. |
申请公布号 |
EP1270347(A3) |
申请公布日期 |
2003.12.17 |
申请号 |
EP20020013197 |
申请日期 |
2002.06.15 |
申请人 |
HELLA KG HUECK & CO. |
发明人 |
MEHN, MICHAEL;REIMANN, MARTIN |
分类号 |
B60R25/24;G07C9/00;(IPC1-7):B60R25/00 |
主分类号 |
B60R25/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|