| 摘要 |
PURPOSE:To efficiently utilize a video signal display device and to display operation information by detecting the connection/disconnection of the display device and switching a remote controller display switching operator. CONSTITUTION:At the time of turning on a power supply, an audio device detects the sort of an electronic apparatus to be connected to a bus BUS or the connection/disconnection of a monitoring device 14. When a remote control operator on a remote commander 46 or a display switching operator 32 on a front panel is depressed in the disconnected state of the monitor 14, the display of a display part 31 is successively and circularly switched. When the operator 32 is depressed in the connected state of the monitor 14, the display of the display part 31 is successively and circularly switched, too. When the display switching operator on the commander 46 is depressed under the above state, the operation information displayed on the monitor 14 is successively and circularly switched. Thus the audio device switches the commander display switching operator in accordance with the connection/disconnection of the monitor 14 so as to prevent the increment of useless operators and displays operation information by effectively utilizing a display screen. |
