| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a display control device that enables a user to safely use a screen even when the screen and an image projection device such as a projector are not synchronized to each other.SOLUTION: A synchronization signal acquisition unit 311 acquires a synchronization signal Ssync, and a synchronization signal determination unit 312 determines whether or not the synchronization signal Ssync and a common control signal Scom are synchronized to each other. When the synchronization signal determination unit 312 has determined that the synchronization signal Ssync and the common control signal Scom are not synchronized to each other, a shutter 51 is closed.</p> |
