Mannered null audio unit in order to activate the performance of the multimedia system for load and the multimedia system

摘要

As for this invention, the controller device in order to control audio unit, the navigation unit and the aforementioned unit for route guidance, being display in order to indicate the selective menu which has the menu item and end menu item of hierarchical structure, as for the aforementioned end menu item the display which makes the start of function of specification possible, at least, the push button switch and 2 direction switches in order the hard key, to select desirably, desirably the rotary knob, the selective key unit which has the push button switch in order to start menu item and end menu item is had, it regards the multimedia system for load.