| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance security against theft, etc., while enhancing convenience for an owner of a vehicle C. SOLUTION: During the reception of an unlocking signal transmitted by a transmitter 11 through the operations of an unlocking switch 13 of a portable machine 10, a door 1 is unlocked by a door lock device 2 after a door mirror lamp 4 is lit. The door 1 is prohibited from being unlocked by the device 2, when it is detected that the owner of the vehicle C re-operates the unlocking switch 13 not only after the lamp 4 is lit but also before the door 1 is unlocked by the device 2.</p> |
