Patent ID: 7638896

Claim:
An in-vehicle electronic system comprising: an in-vehicle electronic apparatus mounted in a vehicle; and a portable electronic apparatus detachably provided to the in-vehicle electronic apparatus, wherein the portable electronic apparatus has a power switch provided at such a position that the power switch is only operable when the portable electronic apparatus is removed from the in-vehicle electronic apparatus, and the power switch is provided at a periphery face of the portable electronic apparatus other than a front face, wherein the portable electronic apparatus has a connector, the connector is provided at a rear face of the portable electronic apparatus, and the portable electronic apparatus is detached from the in-vehicle electronic apparatus along a front direction of the in-vehicle electronic apparatus, wherein a power of the in-vehicle electronic apparatus is capable of being switched on the condition that the portable electronic apparatus is removed from the in-vehicle electronic apparatus, wherein the portable apparatus is switched on at the time the portable apparatus is attached to the in-vehicle apparatus powered on.