What is the difference of Led screen display synchronous and an asynchronous system?
- LEKLED
- Apr 18, 2023
- 2 min read
Updated: Apr 8
LED display control systems are mainly divided into two types: synchronous systems and asynchronous systems.
Synchronous Control System
A synchronous system means that the display content is generated and transmitted in real time by a connected computer or controller. This type of system is typically used for large outdoor billboards or stadium screens, where frequent updates are needed, such as displaying live scores, news feeds, or real-time advertisements.
Content is transmitted to the display through a dedicated data cable (such as a serial or Ethernet connection), and the computer or controller must remain continuously connected and running.
Advantages:
Supports real-time content playback, such as live broadcasts, dynamic ads, and game information.
Smooth display performance, suitable for high-demand scenarios.
Disadvantages:
Higher system cost and more complex installation and maintenance.
Requires more advanced hardware and software, and operators need technical knowledge.
Asynchronous Control System
An asynchronous system means that content is preloaded into the screen’s internal storage or transferred via a USB drive. Once the content is loaded, the LED display plays it independently without needing to remain connected to a computer. Typically, the content loops automatically.
This system is often used for indoor displays or small to medium-sized outdoor screens, especially in situations where the content does not need to be updated frequently.
Advantages:
Lower cost, simple installation and operation.
No need for continuous connection to a computer, offering high stability.
Ideal for fixed or periodically updated content.
Disadvantages:
Cannot display real-time information.
Content updates must be done manually and are less flexible.
Conclusion
If you need to update content in real time (such as for scores, news, or live events), a synchronous control system is recommended.
If you only need to play preloaded ads, announcements, or promotional content and don’t need frequent updates, an asynchronous control system is a more economical and simpler choice.
Asynchronous Control System
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