... in the world, andapplicable to Projection TV, Computer Projection Screen, HDTV wall and projection etc. And the best ... etc. It is the main development of big screen technology,and also the best foreground for the digital ... 's Specification PAL / NTSC / SECAMAutomaticity, Standard, Wide Screen view, Full screenVBS Signal Quick Buttons shift video signal automatical OptionsInteractive Whiteboard ...