LED display control system, also known as LED display controller, or LED display control card.Control system is the core component of LED display, its main task is responsible for receiving from a computer serial port or DVI interface pictures and video display information, placing frame memory, according to the partition method of generating LED display can identify the serial display data and scan sequence control.

LED display because of its flexible control, convenient operation, low cost, has been widely used in all walks of society.LED display to display all kinds of text, symbols, and graphics.Screen display information editing by computer, via RS232 / serial port 485 in LED display frame memory in advance, and then by screen playback, cycling.Colorful display mode, the screen to work offline.Several kinds of commonly used control CARDS are now a: HD - M type control card, HT - 3 bu control card, HT - CA control card.

LED display control card is responsible for receiving a picture display information from the computer serial port, placing frame memory, according to the partition method of generating the serial display data needed for the LED display and scanning sequence control.

LED display control system is divided into synchronous and asynchronous:

LED display synchronous control system, mainly used for real-time display video, graphic, notifications, etc., mainly used for indoor or outdoor full-color LED display, LED display synchronization control system to control the LED display basic equivalent to the workings of a computer monitor, it at least 60 frames per second update rate and corresponding real-time map images on the computer monitor, usually have many shades of gray show ability, can achieve multimedia advertising effect.Its main features are: real-time, expressive force rich, complicated operation, high price.A LED display synchronous control system generally consists of sending card and receiving card, and DVI video card.

Asynchronous control system LED display, LED display asynchronous control system is also called the LED display or offline card offline control system, mainly used to display text, symbols and graphics or animation is given priority to, screen display information editing by computer, via RS232 / serial port 485 in LED display frame memory in advance, and then by screen playback, cycling, rich and colorful display variety.Its main features are: simple operation, low cost, wide using range and simple LED display asynchronous control system can only display digital clock, characters, special characters, LED display screen by asynchronous control system, besides has the function of simple control system is the biggest characteristic can control the display content areas, support analog clock display, countdown, pictures, tables, and animation, time switch machine, temperature control, humidity control, etc.

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