公开(公告)号：EP1602539A4

公开(公告)日：2009-05-06

申请号：EP04799488

申请日：2004-11-04

申请人： TOKAI RIKA CO LTD ,  DENSO CORP ,  TOYOTA MOTOR CO LTD

发明人： OHTAKI K ,  MAEDA TORU ,  KATO H ,  OSUMI A ,  KUMAZAKI TAKESHI ,  SHIMONOMOTO IFUSHI ,  SHIMOMURA TOSHIO ,  FUKUOKA YOSHINORI ,  MASAMURA KOICHI

IPC分类号： E05B49/00 ,  B60R25/01 ,  B60R25/021 ,  B60R25/04 ,  B60R25/06 ,  B60R25/10 ,  B60R25/24 ,  E05B83/00

CPC分类号： B60R25/24 ,  B60R25/04

摘要： A vehicle security device for improving the security level of a vehicle. The vehicle security device (11) is connected to an engine (16) and communicates with a portable device (11). A smart ECU (13) performs a first coded communication to establish mutual authentication with the portable device. An ID code box (14) is connected to the smart ECU, has a first code and a second code, and does not communicate with the portable device. The ID code box performs a second coded communication using the first code to establish a second mutual authentication with the smart ECU. An engine ECU (15) performs a third coded communication using the second code to establish a third mutual authentication with the ID code box. The engine ECU enables the engine to be started when every one of the first, second, and third mutual authentications are established.