| 摘要 |
PURPOSE:To more securely obstablish antitheft function without loss of operability, by changing code signals or transmitting configuration of signals in accordance with the difference in switching operation and the insertion operation of a key switch. CONSTITUTION:When a switch 7 provided on a holder 4 is pushed in, a current flowing in the port 21b of a CPU 21 acts on the base of a transister T3 and a current matching the proper code stored in a ROM 22 flows in a LED 6. The LED 6 flickers and transmits code signals of infrared ray. Then a photodiode 33 provided in a vehicle 1 receives the light and the light is amplified by an amplifier 34 and collated in the CPU 31. When coincidence is confirmed, an unlocking instruction is issued from the CPU 31 to a door lock drive 14. Subsequently, an actuator is driven to unlock the device. In this way, the operability is increased and the antitheft of the vehicle 1 and apparatuses mounted thereon can be improved. |
