| 摘要 |
PROBLEM TO BE SOLVED: To provide an amplifier which is easy to change the connection setting of a terminal and has high convenience for a user. SOLUTION: The amplifier 10 includes a plurality of input terminals T<SB>in</SB>,.. for each signal type. A second selector 16 sequentially selects one of the plurality of the input terminals T<SB>in</SB>. When a signal is inputted to the input terminal T<SB>in</SB>, the inputted signal is outputted to a synchronizing separation IC 18. The synchronizing separation IC 18 takes out a vertical synchronization signal from the signal, and outputs it to a controller 26. When the controller 26 detects the vertical synchronization signal, the controller 26 determines that a source device is connected to the selected input terminal T<SB>in</SB>. The controller 26 which has detected the connection, controls a GUI processor 20 and displays the GUI display showing the connecting state of the input terminal T<SB>in</SB>on the display unit 24. COPYRIGHT: (C)2006,JPO&NCIPI
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