| 摘要 |
<P>PROBLEM TO BE SOLVED: To restrict start of a vehicle as required. <P>SOLUTION: For example, if an operation mode at the time when a "request" from an ECU 12 is received (a step S21 YES) is a start inhibition mode (a step S22 YES), a portable electronic key 11 generates an "answer" including "start inhibition information" and transmits the "answer" to the ECU at a UHF frequency (steps S23, S24). In this case, in the ECU side, vehicle start is inhibited. When it is in a start permission mode (a step S22 NO), an "answer" not including the "start inhibition information" is generated and transmitted to the ECU 12 (steps S24, S25). In this case, in the ECU side, vehicle start is permitted. Namely, a vehicle is started by stepping on an accelerator. The control system and method, the fixed radio communication device and method, and the portable radio communication device and method are applicable to a passive entry system. <P>COPYRIGHT: (C)2009,JPO&INPIT |
