First of all, we have to understand what is the LED electronic display controller, it can also be called: LED asynchronous control system and LED electronic display control card, it is as the core component of the LED graphic display. Its main function: is to receive from the computer serial port screen display information into the memory, and according to the partition drive mode to generate the display of serial display data and scanning control timing, to display a variety of text and graphics.
Due to the daily life of the user on the LED electronic display controller will often encounter a variety of problems, and thus the
LED Controller Store for the majority of users summarized the LED electronic display controller of the five common problems.
The first common problem: embedded real-time + offline two-in-one controller is how to control the display. Embedded real-time + offline display is mainly composed of DVI send controller, CPU, SD card and display scanning driver four parts.
1, when plugged in the system will be initialized, the CPU will take out the user deposited display content from the SD card, which will be sent to the LED electronic display can restore the user edited content.
2、When the CPU detects real-time information sent, 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.
The second common problem: the audio processing problem of embedded real-time + offline two-in-one controller.
As the controller has its own audio processor in offline state, it can play audio through offline. In the real-time state, the audio is captured in real-time by the DVI transmitter controller, and then sent to the controller through the 1000M network cable, and then played through the audio playback chip. Therefore, the audio of the controller can be switched between real-time and offline at will.
The third common problem: whether the controller can control the group screen.
The controller card has an Ethernet interface, which can be used for flexible and convenient networking. It can control the networked displays through the computers in the LAN, so it is suitable for the group screen to release information through networking.
The fourth common problem: whether the display needs grayscale to show pictures.
Gray scale refers to the index of LED's ability to show pictures, without gray scale, it can only display text and patterns. The pictures on the computer are full-color, to truly restore the effect, only full-color LED electronic display screen can do. In the monochrome LED screen can only display patterns, but in the two-color screen display pictures are more like black and white photos, so there must also be grayscale level.
The fifth common problem: whether the controller can do offline playback of animation and video.
Controller can directly accept a variety of video format files, software automatically processed into the display to adapt to the size, do not need to be cut into bitmap, directly to MPEG4, AVI, FLV, and BMP and so on the format sent to the control card.
