| 摘要 |
<p>PURPOSE: To provide a remote control device for the safety for preventing a burglary to be caused by misappropriation of code and having simple construction at a low cost. CONSTITUTION: An identification code transmitted from a transmitter 2 is constituted of a fixed part (identification code) and a part storing the number of operations (operation code), the operation code is generated from a counter 7 incorporated in the transmitter 2, and it is added evertime when a remote control device is operated. The code is also written in a memory 29 of a receiver 3 whenever operation is made in a normal state. The receiver 3 receiving the identification code checks that the received identification code is larger than the operation code stored in the previous memory by at least one unit in size, and a movable signal to an actuator is generated only when it is affirm as a result of the check.</p> |
