| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for enabling to easily find out a remote controller when the remote controller is lost in a vehicle. SOLUTION: An in-vehicle navigation device 100 receives operation instructions via the remote controller 200. The in-vehicle navigation device 100 has previously stored the installation locations of a plurality of remote communicators 300 (a, b) which are separately installed in the vehicle. The in-vehicle navigation device 100 calculates the positions of the remote controllers from the lapsed transmission time between the plurality of communicators 300 (a, b) and the remote controller 200 and the installation positions of the plurality of communicators 300 (a, b). At this time, the in-vehicle navigation device 100 displays the calculated locations of the remote controller on the display. COPYRIGHT: (C)2009,JPO&INPIT |
