| 摘要 |
PURPOSE:To synthesize a deformed screen without generating distortion and the unevenness of luminance, by erasing an overlap part with an adjacent screen by blanking control when a large screen is synthesized with use of plural video projectors. CONSTITUTION:Plural video projectors 2 are provided at the center of a dome 1, and the screens to be pictured of the projectors 2 are combined on a spherical screen of the dome 1 in the form of a multi-screen. The screen of each projector 2 is projected in the form of a screen obtained by erasing four corner parts 7a-7d from an ordinary square screen 7. In other words, the screens projected from the projectors 2 are combined on the screen with no overlapping mutually. A blanking circuit is provided to each projector 2 to erase the parts 7a-7d from a square screen respectively. |
