| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for quickly identifying one of a plurality of portable transmitter-receivers and enhances the responsiveness of an in-vehicle equipment remote control device even if the transmitter-receivers compatible with a single vehicle are present in a range where communication is possible with respect to an in-vehicle transmitter and an in-vehicle receiver. SOLUTION: According to the method, the portable transmitter-receivers compatible with the single vehicle are distinguished from each other, and request signals specific to the respective portable transmitter-receivers can be transmitted from the in-vehicle transmitter. Further, whenever communication is held between the in-vehicle transmitter or the in-vehicle receiver and one of the portable transmitter-receivers, the one portable transmitter-receiver is stored in the in-vehicle transmitter or the in-vehicle receiver as a communication target. When a request signal is transmitted from the in-vehicle transmitter to specific one of the portable transmitter-receivers as the communication target, under a condition in which the portable transmitter-receivers compatible with the single vehicle are present in the range where communication with respect to the in-vehicle transmitter and the in-vehicle receiver is possible, the one portable transmitter-receiver which has been the communication target is preferentially specified.</p> |
