| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric key system and a communication unit which can determine permission/non-permission for various vehicle's operations such as door lock and unlock or starting of an engine by other communication terminal irrespective of possession or non-possession of the dedicated key, and wherein a state separately preparing the communication terminal for the purpose hardly occurs even if such structure is adopted. <P>SOLUTION: An immobilizer function is mounted on the vehicle 1 as a purpose for antitheft of the vehicle. A non-contact IC card communication system 16 using a non-contact IC card communication technique called Felica (R) is mounted on the vehicle. When an ID checking between a reader/writer 17 and a cellular phone 18 is effected by holding the cellular phone 18 incorporating a communication circuit 19 corresponding to the Felica (R) up over in-vehicle antenna 22, an immobilization lock state by the immobilizer function is released, and the starting of an engine is permitted. Therefore, the engine can be started by even a mechanical key 37 having no transponder 2a to be incorporated. <P>COPYRIGHT: (C)2007,JPO&INPIT |
