| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an immobilizer device prevented from enlargement and an operation failure due to a temperature rise. <P>SOLUTION: In the immobilizer device, a microcomputer forbids the operation of a feeder circuit 23 even if a signal to the effect of requesting start is input from an input interface circuit 26 when determining that a computed value computed from a calculation expression having the operating time and nonoperating time of the feeder circuit 23 as elements is larger than a predetermined threshold value. The calculation expression includes a mathematical expression of subtracting multiplied term of a predetermined constant in the nonoperating time of the feeder circuit 23 from a multiplied term of a predetermined constant in the operation time of the feeder circuit 23. <P>COPYRIGHT: (C)2008,JPO&INPIT |
