| 摘要 |
A projector has a single-screen display mode in which an image based on a single image signal is displayed and a dual-screen display mode in which images based on two respective image signals are displayed. When an image signal is input only to one input terminal and an image signal is not input to the other input terminal, the projector is set to the single-screen display mode and an image based on an image signal from a PC is displayed in a main screen. When input of an image signal to the other input terminal is confirmed during execution of the single-screen display mode, the projector switches from the single-screen display mode to the dual-screen display mode, so that an image based on an image signal from a PC1 and an image based on an image signal from a PC2 are simultaneously displayed in one screen.
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