The difference between LED display synchronous system and asynchronous system

In the LED display, the control system is also a very important part.?

The control system of LED display is generally divided into two types: synchronous system and asynchronous system.?

Only by understanding the difference between the synchronous system and the asynchronous system of the LED display can we have a comprehensive understanding of the LED display.

LED Display?synchronous?control system：

That is, the content on the computer monitor is displayed completely synchronously.?

Whatever content is displayed on the computer will be displayed on the LED display.

The key is to update and synchronize the content information specified by the computer in real time.

Therefore, synchronous control must have a fixed computer to control the large screen. Once the computer is turned off, the LED display cannot receive signals and will not be able to display.

This kind of LED synchronization system is mainly used in places with high real-time requirements.

LED Display asynchronous control system:

That is, the information does not need to be updated synchronously in real time.

The principle is to first edit the content that needs to be played on the computer, and then send it to the control card of the LED display through the transmission medium (network cable, data cable, 3G/4G network, WIFI, U disk, etc.). At this time, the control card display again.

Therefore, even if the computer is turned off, the display screen can still display preset content. It is suitable for places where real-time requirements are not high.

For outdoor advertising screens, what are the advantages and disadvantages of these two control methods?

synchronous control system：

• The advantage is that it can be played back in real time and the amount of playback information is not limited.?
• The disadvantage is that the playback time will be subject to certain restrictions and will change with the playback time of the computer system.?Once the communication with the computer is interrupted, the LED display will stop playing.

asynchronous control system:

• The advantage is that it can realize offline playback and store information.The playback information is stored in the control card in advance.
• The disadvantage is that it cannot realize synchronous playback with the computer, and the amount of playback information will be limited. The reason is that the storage capacity of the control card has a certain range.

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