How to operate the led display control card? The led display control card is the key data conversion part of the control display. We also often talk about synchronous control cards, asynchronous control cards and so on.

 1. What is a led display controller

  The led display controller, also known as the LED asynchronous control system or the LED display control card, is the core component of the LED graphic display. Responsible for receiving the picture display information from the computer serial port, putting it into the frame memory, and generating the serial display data and scanning control timing required by the LED display according to the partition driving method.

  2. How does the embedded real-time + offline two-in-one controller control the display

  Embedded real-time + offline display, mainly composed of four parts: DVI sending controller or 1000M network card, CPU, memory (SD card), display scanning driver. After power-on, the system is initialized, and the CPU takes out the display content stored by the user from the memory (SD card), and sends it to the LED display to restore the content modified by the user. (The content modified by the user is sent to the controller via LAN communication). When the CPU detects that real-time information is being sent, it will actively switch the data channel to switch the display to real-time display. Real-time display is the highest priority of the display.

  3. The audio processing problem of the embedded real-time + offline two-in-one controller

  When the led display is offline, the controller has its own audio processor, which can play audio offline. But in the real-time state, the audio passes through. The DVI sending controller (or 1000M network card) collects the audio in real time, and sends it to the controller through the 1000M network cable, and then broadcasts it through the audio playback chip. Therefore, the audio of the controller can be switched in real time and offline.

  4. What occasions are the real-time + offline two-in-one controller suitable for?

  Real-time + offline two-in-one controller, accustomed to many occasions. And the display screen can be used without turning on the computer. The led display completely abandons the concept of asynchronous synchronization and is an innovation in display applications.

  5. Can the manipulator complete group screen control?

  The control card has an Ethernet (local area network) interface for convenient networking. Through the computer in the local area network to control the networked led display screen, it is suitable for group screen network to publish information.

  6. Can the controller play animations and videos offline?

  The led display controller can directly accept files in various video formats, and the software actively processes them into the scale that the display screen is accustomed to. It does not need to be cut into bitmaps, and is directly sent to the control card in MPEG4, FLV, BMP, etc. format.

  7. Does the picture of the led display need grayscale?

  The pictures on the computer are all colorful. If you want a real restoration effect, only the LED display can do it. Only pictures can be displayed on the monochromatic LED screen, and the pictures displayed on the two-color screen are more like black and white photos (it is also necessary to have a gray scale). The so-called gray scale refers to the goal of the LED to reflect the ability of pictures. If there is no gray scale, it can only display text and pictures.