| 摘要 |
PROBLEM TO BE SOLVED: To improve the operation reliability of a controller (passive entry device) performing bidirectional wireless communication between main equipment 20 (on-board equipment) and portable equipment 10, performing collation and confirmation of the predetermined portable equipment and performing automatic unlocking or the like of the doors of the car by the controller. SOLUTION: When the portable equipment receives a request signal, an answer signal containing a pre-registered code is transmitted by wireless frequency switching method, on the other hand, when the main body equipment 20 transmits a request signal based on the results of detection by a detection means such as a door knob sensor 31, thereafter, the operation of receiving the answer signal by the frequency switching method is executed, the authorization code contained in answer signal received is collated and judged, and when judged results are acceptable, then the vehicle doors are automatically unlocked in the configuration. |
