led screen display

LED screen display is composed of many independent pixels (light emitting yuan) arrangement and become, due to the separation of pixels, determine the glow of the control and drive only in digital manner. These pixels from the glowing status to control, independent controller synchronization driver. Video true color display meant for each pixel respectively, the brightness of the control and the scanning time in provisions to complete synchronization. Big screen is tens of thousands of pixels, which makes system composed of the complexity of the large screen is two values for display on overall increase greatly, and the data transmission speed put forward higher request. Give each pixel set A regular D/A is simply not realistic, must find A can minimize the system complexity and performance of the highest possible solution.