| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique to lighten user's burden in operation which is performed when projecting an image to a screen by using an image projection device. Ž<P>SOLUTION: The screen device including the screen includes: a screen housing part in which the screen is housed; a signal transmission part which transmits a signal at least to one of the image projection device and peripheral equipment; and a controller which controls the signal transmission part. The controller allows the signal transmission part to transmit the signal in accordance with a drawn state of the screen from the screen housing part. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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