The LED display control system center is mainly the main control computer, including the communication network between the computer and the LED display, optical fiber and its supporting converter or wireless transmitter, and the controller that receives information and controls the display inside the LED display device. When the user enters the source information into the main control computer through the LED display information processing system, the main control computer accepts and processes the source information through specific software, and transmits it to the LED display device through the communication network. The controller responsible for receiving the picture or video display information from the serial port of the computer, stores the information in the form of frames as a frame memory, and controls the LED display to display the information.
The internal control system of the LED display screen consists of an asynchronous control system and a synchronous control system. The asynchronous control system mainly controls the display of various characters, symbols, graphics and animations. When the controller stores the data sent by the computer into the frame memory, the asynchronous control system displays and plays screen by screen, reciprocating and circulating.
Compared with the asynchronous control system, the operation of the synchronous control system is more complicated. It is mainly used to display video, graphics, etc. in real time, and the operation is more complicated. The synchronous control system uses multi-gray color display to update the display content point-to-point at a rate of not less than 60 frames per second, so as to achieve the effect of multimedia publicity.
