Patent ID: 6937732

Claim:
An audio system that reproduces contents information as sound in a vehicle, comprising: a portable audio apparatus carried by a passenger of said vehicle; and an audio apparatus mounted in said vehicle, wherein said portable audio apparatus comprises a storage medium for retaining contents information, and a transmission module for transmitting said contents information to said audio apparatus at least by means of radio communication, wherein said audio apparatus comprises a reception module for receiving said contents information from said portable audio apparatus at least by means of radio communication, a control unit for reproducing said contents information received by said reception module and outputting the reproduced information as sound from a speaker mounted in said vehicle, an operation switch that allows the passenger of said vehicle to input an operation of said audio system, and an operation signal transmission module for transmitting an operation signal corresponding to the operation of said operation switch to said portable audio apparatus at least by means of radio communication, and wherein said portable audio apparatus further comprises a CPU for controlling operation of said portable audio apparatus according to said operation signal received from said audio apparatus at least by means of radio communication.