LED display control system
LED display control system (LED Display Control System) is a system that controls the correct display of LED large screens according to user needs. It is divided into two categories, the networked version and the stand-alone version. The online version is also called the LED information release control system, which can control each LED terminal through the cloud system. The stand-alone version is also known as the LED display controller and LED display control card. It is the core component of the LED display. It is mainly responsible for converting external video input signals or on-board multimedia files into digital signals that are easy to identify on the large LED screen. Therefore, the device that lights up the large LED screen is similar to the graphics card in a home PC, except that the display in the PC is a CRT / LCD, etc., and the display in this system is a large LED screen. According to the access signal mode, it can be divided into synchronous system and asynchronous system.
LED display asynchronous control system is also called LED display offline control system or offline card. Mainly used to display a variety of text, symbols and graphics or animation. The screen display information is edited by a computer. It is pre-installed into the frame memory of the LED display via the RS232 / 485 serial port, and then displays and plays back and forth on a screen-by-screen basis. The display mode is colorful and varied. Its main features are: simple operation, low price, and wide range of use. The LED display simple asynchronous control system can only display digital clock, text and special characters. In addition to the functions of the simple control system, the LED display graphic asynchronous control system has the biggest feature that it can control the display screen content by area. Support analog clock display, countdown, picture, table and animation display. With timing switch, temperature control, humidity control and other functions
LED display synchronous control system, mainly used to display video, graphics, notifications, etc. in real time. Mainly used for indoor or outdoor full-color large screen display. The LED display synchronous control system controls the working mode of the LED display, which is basically equivalent to a computer monitor. It maps the image on the computer monitor in real time at a refresh rate of at least 60 frames / second, and usually has multiple grayscale colors Ability to achieve the effect of multimedia advertising. Its main characteristics are: real-time, rich expression, complicated operation, and high price. A set of LED display synchronization control system generally consists of a sending card, a receiving card, and a DVI graphics card.