ON-VEHICLE ELECTRONIC SYSTEM, ON-VEHICLE ELECTRONIC APPARATUS, AND POWER SUPPLY CONTROL METHOD OF PORTABLE ELECTRONIC APPARATUS

摘要

PPROBLEM TO BE SOLVED: To provide an audio navigation system capable of changing power sources of a navigation device removable from a device body at a time effective for a user. PSOLUTION: The audio navigation system comprises an audio device 100 mounted on a vehicle, and a navigation device 200 which is attachably/detachably fitted to the audio device 100. When the audio device 100 detects that the navigation device 200 is fitted, the audio device sets the navigation device 200 in an operable state. PCOPYRIGHT: (C)2008,JPO&INPIT