7 common LED display controller failures

LED display screens are indispensable decorations, and their applications are becoming more and more widespread. LED display screen controllers are mainly used to display various texts and graphics. Users often have various problems with LED display screen controllers in daily life. The following summarizes 7 common problems of LED display screen controllers for our customers.

1.What is an LED display controller?

The LED display controller, also known as an LED asynchronous control system or an LED display control card, is the core component of an LED graphic display. It is responsible for receiving the screen display information from the computer serial port, placing it in the frame memory, and generating the serial display data and scanning control timing required by the LED display according to the partition drive method.

2. Can the controller play animations and videos offline?

This controller can directly accept files in various video formats, and the software automatically processes them into sizes suitable for the display. It does not need to be cut into bitmaps and is directly sent to the control card in MPEG4, AVI, 5LV, BMP, etc. formats.

3. Does the LED display need grayscale to display pictures?

The pictures on the computer are all full-color. If you want to restore the effect truly, only the LED full-color screen can do it. Only patterns can be displayed on a monochrome LED screen, and pictures displayed on a two-color screen are more like black and white photos (there must also be grayscale levels). The so-called grayscale refers to the indicator of the LED's ability to express pictures. Without grayscale, only text and patterns can be displayed.

4. Audio processing issues of embedded real-time + offline two-in-one controller

In offline state, the controller has its own audio processor, which can play audio offline. But in real-time state, the audio is collected in real time by the DV! sending controller (or 1000M network card), sent to the controller through the 1000M network cable, and played through the audio playback chip. Therefore, the audio of the controller can be switched in real time and offline at will.

5. What occasions are suitable for real-time + offline two-in-one controller

Real-time + offline two-in-one controller is suitable for many occasions. And the display can be used without turning on the computer. LED display screen completely abandons the concept of asynchronous synchronization, which is a revolution in the application of display screen.

Inapplicable places: TV station screen, super large display screen

6. Can the controller realize group screen control? 

The control card has an Ethernet (LAN) interface, which can be easily networked. The networked display screen can be controlled through the computer in the LAN, which is suitable for group screen networking to publish information. 

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

The embedded real-time + offline display screen is mainly composed of four parts: DVI sending controller or 1000M network card, CPU, memory (SD card), and display scan 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 screen to restore the content edited by the user. (The content edited by the user is sent to the controller through LAN communication). When the CPU detects that real-time information is sent, it will automatically switch the data channel to turn the display screen into real-time display. Real-time display is the highest priority of the display screen.