Patent ID: 7765046

Claim:
An in-vehicle electronic apparatus, to which a portable navigation apparatus is attachable, and which outputs audio information to multiple audio outputting portions, the in-vehicle electronic apparatus comprising: a receiver receiving as audio information, first audio information being navigation audio information output by the portable navigation apparatus and second audio information being inputted into the portable navigation apparatus, passing through the portable navigation apparatus and being outputted by the portable navigation apparatus; an audio selector outputting the first audio information to a part of the multiple audio outputting portions, in the case that the audio information is the first audio information, and outputting the second audio information to all of the multiple audio outputting portions, in the case that the audio information is the second audio information; a controller controlling the audio selector on the basis of audio identification information representing whether the audio information output from the portable navigation apparatus is the first audio information or the second audio information and being received from the portable navigation apparatus, in the case that the portable navigation apparatus is attached; and a single connecting line receiving the first audio information and the second audio information from the portable naviagation apparatus in the case that the portable navigation apparatus is attached.