In modern display technology, LED display screens are widely used in advertising, information release, stage background and other fields with their advantages of high brightness, low power consumption and long life. The control system of LED display screens is mainly divided into synchronous control and asynchronous control, each of which has unique characteristics and application scenarios. This article will compare and analyze these two control systems to help users make a more reasonable choice according to their needs.

Characteristics and application of synchronous control system

Synchronous control system, as the name suggests, is a control method for synchronous display of LED display screen and computer monitor. This system is usually used for indoor or outdoor full-color large-screen display screens, which can display videos, pictures, texts, notifications and other content in real time. What is the difference between indoor LED display screens and outdoor LED display screens?

Features:

Real-time: The synchronous control system can map the image on the computer monitor in real time at an update rate of at least 60 frames per second, meeting the application scenarios with high real-time requirements.
Rich expression: Due to synchronous control, the display can display multi-grayscale colors to achieve multimedia advertising effects.
Complex operation: The operation of the synchronous control system is relatively complex and requires professional technicians to set up and maintain.
High price: Due to high technical requirements, the cost of the synchronous control system is relatively high. Here is the price range of commercial LED display screens.
Dependence on the computer: The content of the display screen is completely synchronized with the computer monitor. Once the computer is turned off, the display screen will also stop displaying.
Application scenario: The synchronous control system is mainly suitable for places where dynamic video or graphic information needs to be displayed in real time, such as TV stations, large-scale event sites, shopping malls, etc.

Characteristics and application of asynchronous control system

Asynchronous control system, also known as offline control system or offline card, is mainly used to display text, symbols, graphics or animation. Unlike synchronous control system, after the asynchronous control system edits the content on the computer, it is pre-placed into the frame memory of the LED screen through the RS232/485 serial port, and then played independently. Take you to understand the LED display control system in 5 minutes.

Features:

Simple operation: The operation of the asynchronous control system is relatively simple, and users can easily edit and update the display content.
Low price: Due to the low technical requirements, the cost of the asynchronous control system is relatively low.
Wide range of use: The asynchronous control system is suitable for a variety of application scenarios, including outdoor billboards, information display screens, etc.
Regional control: It can realize regional control of the display screen content, with high flexibility.
Independent playback: Even if the computer is turned off, the LED display can be displayed independently, but the amount of playback information is limited by the storage capacity of the control card.
Application scenario: The asynchronous control system is suitable for places that do not require high real-time performance, but need to flexibly display static or simple dynamic content, such as bus stops, shopping mall signs, etc. Provide you with a guide to the application of LED display screens in shopping malls.

Conclusion

Synchronous control systems and asynchronous control systems each have their own advantages and limitations. Synchronous control systems are suitable for occasions that require high real-time display of dynamic content, while asynchronous control systems are more suitable for cost-sensitive applications that do not require high real-time performance. When choosing an LED display control system, users should weigh the pros and cons of the two systems based on their specific needs and budget and make the most appropriate choice. By understanding the differences between the two control systems, users can more wisely choose an LED display product that suits their needs.

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Comparison of synchronous and asynchronous control of LED display screens