| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a door lock system which can be handled with a small amount of power, and which can securely inform a user of the locked state of a door. <P>SOLUTION: When operation by the user is performed on an operation part 12 provided on a vehicle or the like, after radio communications are performed between the door lock device 1 mounted on the vehicle and wireless communications equipment 3 which the user possesses, the door lock device 1 operates a lock mechanism 15 to lock/unlock the door. The door lock device 1 obtains state information regarding the locking/unlocking of the door based on a feedback signal from the lock mechanism 15, and sends it to the wireless communications equipment 3. The wireless communications equipment 3 performs lighting control of a lamp 33 in accordance with the received state information. The transmission of the radio signal from the door lock device 1 to the wireless communications equipment 3 is performed in an LF band, and the transmission of the radio signal from the wireless communications equipment 3 to the door lock device 1 is performed in a UHF band. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
