Vehicular audio/video expansion device provided with learning function and vehicular audio/video system

摘要

A vehicular audio/video expansion device provided with learning function, a vehicular audio/video system using the same and its learning method have been disclosed. According to the present invention, the vehicular A/V system comprises: a playback device having a remote control provided with a first button associated with a first control code for controlling the playback device when the first button is pressed; a host provided with a second button associated with a second control code; and an expansion device coupled to the host and the playback device. The expansion device processes the first control code and the second control code to generate a corresponding relation under a learning mode. According to the corresponding relation, the function of the first button is replaced by the second button to control the playback device under an operation mode.