The LED display control card is the key data conversion part of the control display. We also often say synchronous control cards, asynchronous control cards, and so on. The following describes an LED control card from the control mode of the control card.
1. What is the LED display controller?
　　 LED display controller, also known as LED asynchronous control system or LED display control card, is the core component of LED graphic display. It is responsible for receiving the screen display information from the serial port of the computer, placing it into the frame memory, and generating the serial display data and scan control timing required for the LED display in the partition drive mode .
2 , embedded real-time + offline two-in-one controller is how to control the display
Embedded real-time + offline display, mainly composed of DVI transmission controller or 1000M network card, CPU , memory (SD card ) , display scan driver. After power-on , the system initializes , and the CPU takes out the display content stored by the user from the memory (SD card ) , and sends the LED display screen to restore the content edited by the user. ( User-edited content is sent to the controller via LAN communication ) . When the CPU detects that there is real-time information transmission, it will automatically switch the data channel to make the display turn to real-time display. Real-time display is the highest priority of the display.
3 , embedded real-time + offline two-in-one controller audio processing problem
In the offline state, the controller has its own audio processor that can play audio offline. However, in the real-time state, the audio is passed, and the DVI transmission controller ( or 1000M network card ) collects the audio in real time, and sends it to the controller through the 1000M network cable, and plays it through the audio playback chip. Therefore, the controller's audio can be switched in real time and offline.
4 , real-time + offline two-in-one controller for which occasions
Real-time + offline 2-in-1 controller for many occasions. And the display can be used without turning on the computer. The LED display completely abandons the concept of asynchronous synchronization and is a revolution in display applications.
Not applicable: TV screen, large display
5. Can the controller implement group screen control?
Control card with Ethernet ( local area network ) interface for easy networking. Through the computer in the local area network to control the networked display, suitable for group screen networking to publish information.
6. Can the controller play animations and videos offline?
The controller can directly accept files of various video formats, and the software automatically processes the size of the display screen, and does not need to be cut into bitmaps, and is directly sent to the control card in the format of MPEG4 , AVI , FLV , BMP, and the like.
7, LED display shows the pictures you need gray
The pictures on the computer are all full-color. To truly restore the effect, only the full-color LED can do it. Only the pattern can be displayed on the monochrome LED screen, and the picture displayed on the two-color screen is more like a black and white photo ( it must also have a gray level ) . The so-called gray scale refers to the indicator of the ability of the LED to display pictures. If there is no gray scale, only the characters and patterns can be displayed.
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