| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an on-vehicle control device for preventing useless electric power consumption of a battery. <P>SOLUTION: When a communicable state is established between the device and a portable machine by detecting received electric power of a radio wave emitted from the portable machine, when a state of staying the received electric power of the portable machine within a predetermined variation width continues for a predetermined time or more, the communicable state between the device and the portable machine is released, and retrieval operation of the portable machine is stopped, or a time interval for executing the retrieval operation is lengthened. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
