... video display, mobile digital LED display, stage & bar electronic sign, DOT matrix LED display, etc. 1. Function and Technology Character (1) Multiplied ... ) 4096 grade grey control system and the color is over 16.7 millions, and the brightness, contrast, saturation, chroma can ... ) 4096 grade grey control system and the color is over 16.7 millions, and the brightness, contrast, saturation, chroma can ...