Patent ID: 8526631

Claim:
An audio device mountable on a vehicle that performs replay of audio based on an external audio signal outputted from a portable audio device, comprising: an interface for connecting to said portable audio device; a power supply part configured to supply power of a predetermined constant voltage to said portable audio device; an audio replay part configured to replay said audio based on said external audio signal; an actuation input part configured to be used by a user for input of an actuation or a command for controlling replay of said audio; and a control part configured i) to control an actuation function on said portable audio device for replaying said audio, and ii) to switch control of said actuation function between one of a user input part arranged on said portable audio device and said actuation input part, wherein, in a first mode, the user input part arranged on said portable audio device is active for receiving user input for controlling replay of said audio, and in a second mode, said actuation input part is active for receiving user input for controlling replay of said audio, and wherein both of the switching of control of said actuation function and control of replay of said audio via said actuation input part are performed as a result of user input to said actuation input part while the portable audio device is connected to said interface.