US Patent 7765046 In-vehicle electronic apparatus and in-vehicle electronic system

An in-vehicle electronic apparatus, to which a portable navigation apparatus is attachable, and which can output audio information to multiple audio outputting portions, and the in-vehicle electronic apparatus includes a receiver receiving as audio information, first audio information being navigation audio information output by the portable navigation apparatus and second audio information through the portable navigation apparatus, and an audio selector outputting the first audio information to at least one of the multiple audio outputting portions, when the audio information is the first audio information, and outputting the second audio information to the multiple audio outputting portions, when the audio information is the second audio information.