| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable an unlocking system to surely execute locking and unlocking operations by improving the securability of the system by converting transmission codes continuously transmitted from a transmitter by a rolling code method. SOLUTION: A timer 212 is incorporated in a receiver 202 and the count value of transmission codes is predicted from the time difference between the preceding receiving time and present receiving time. When the count value falls within a predicted range, an unlock system executes unlocking operations.</p> |
