http://en.wikipedia.org/wiki/Projector
Lighting device
Imaging system
http://en.wikipedia.org/wiki/Backlight
Projector switch-off
http://en.wikipedia.org/wiki/Touchscreen
Tilt adjusting device
http://en.wikipedia.org/wiki/Image_processor http://en.wikipedia.org/wiki/Backlight
Light source driving
Panel display
LED output correction
