LED screens have now become the mainstream trend in the display industry, whether indoor and outdoor, home use or public use, there are LED displays.
It is worth mentioning that an LED screen wants to run and play normally, which can not be separated from the control system related to it, of which the Synchronous control system is one of the most important systems.
What is Synchronous control system
To put it simply, the control system that can synchronize the computer screen and the LED screen in real time, we call it LED Synchronous control system. It usually includes LED sending card, LED receiving card and LED hub card, as well as some related control software.
The principle of Synchronous control system is to install the sender card in the computer, the receiver card is installed in the LED screen, using the sender card and receiver card to connect the computer and LED screen signals together.
LED Synchronous control system can make the LED display screen and the connected computer real-time display of the same screen. This control system, the LED screen, can display anything you want to display the content of the screen, you just need to display the ideal screen on the computer.
With the gradual development of the information age, Synchronous control systems began to support more and more different formats of the content source, to the maximum extent possible to let the LED screen picture without the limitations of the size and format of the content.
Synchronous control system advantages and disadvantages
Synchronous control system can signal real-time update conversion, it plays the content source is not affected by the equipment storage space and content format, LED screen using Synchronous control system transmission speed is very fast, and broadcasting other input sources of video images can be done without any delay.
But this does not mean that the Synchronous control system does not have any shortcomings. The Synchronous control system on the computer is too strong, when the LED screen connected to the computer can not be used normally, the LED screen will not be able to display the screen because there is no content source output.
Application of Synchronous control system
4K and 4K LED display
Usually a 4k and more than 4k LED screen needs to import a lot of data, it is a quite large volume of playback files, so you need to configure a space to place the relevant computer to handle the screen transfer.
Performance rental LED wall
The LED screen of the event performance needs to broadcast the scene in real time, so it needs to have a synchronous control system to operate, and the asynchronous control system can not meet these operations.
Creative LED Display
Creative LED display screens are usually used in more high-end places, the screen content design is rich, and requires a synchronous control system to participate in controlling the screen.
Command center / monitoring center LED display
This type of command, monitoring-related occasions are required to watch the viewer and the screen content of instant interaction, the viewer through the real-time screen to propose the next step of the plan, or intervention operations.
Live TV LED display
Stage or program and other live television images, need to be recorded through the camera screen real-time transmission to the computer, and then transmitted by the computer to the LED screen, these operations can only be completed by the synchronous control system.
What is asynchronous control system
Asynchronous control system is also known as offline control system, it does not require the LED screen and the computer connected in real time, the playback files prepared in advance to transmit to the LED screen can be, between them, the sender card has a memory storage function, you can store the source of the content in it.
Asynchronous control system operation is simple, inexpensive, so the use of a wider range, but asynchronous control system memory is limited, can not operate large file content source, it transmits the size of the file is more restrictive, so more used in places that do not require high.
The difference between synchronous and asynchronous control system LED screen
Synchronous control system
- Content source: synchronous control system content source can be real-time through the camera shooting content, can also be directly relayed to other videos, or in the computer to play the video has been processed, whether real-time synchronization or preset in advance, as long as the screen signal can be transmitted to the computer, the computer displays what screen, LED screen will display what screen.
- Transmission: Synchronous control system requires wiring, so that the computer and LED screen connection, the length of the wiring depends on the distance between the two.
- Characteristics: LED screen by Synchronous control system can realize the screen real-time playback, and the video file format, size without excessive requirements, connected to the computer can display.
- Application: Synchronous control system is mostly used for stage rental, large-scale advertisement, real-time meeting and so on.
Asynchronous control system
- Content source: asynchronous control system content source usually need to be edited in advance to transmit to the LED screen, the content will be stored in the LED screen control card, the follow-up can continue to play the corresponding screen repeatedly, do not need to connect the content source and the LED screen each time and then play the screen.
- Transmission: asynchronous control system usually does not require wiring, in advance, the content source through the disk or network and other transmission methods to send to the LED screen control card can be.
- Characteristics: asynchronous control system does not have to be connected to the computer all the time limitations, simple operation, low price, but it can not deal with too large a file.
- Application: asynchronous control system is mostly used for small LED screen, playing some repeated advertisements or event notification clips.
How to choose the right control system
LED screen synchronous control systems and asynchronous control systems have their own advantages and limitations, choosing which control system needs to refer to the LED screen application requirements and environment.
If you need real-time broadcast of the screen, similar to some stage performances, monitoring centers, or some high-end occasions, the use of the LED screen and the content of the source screen are very high-definition, you should choose synchronous control system; if it is just a simple repetition of some of the small amount of advertising video or some pictures of the text information there is no need to use a synchronous control system, only asynchronous control system will be its content transmission into the LED screen storage can be.
Dual mode LED control system
Although we advocate according to different occasions and needs to choose the LED screen control system, but different times and situations, the characteristics and advantages of the two control systems we may need to use, based on such needs, JYLED developers have been studied to support two control modes at the same time the LED display.
This dual-mode control system LED display can switch the control system with a single press of a button, whether it is a real-time broadcast screen or repeat playback screen without human involvement, it can perfectly meet.
With the passage of time, this dual-mode LED control system will gradually become the mainstream trend of LED display.
Conclusion
When choosing a control system, we need to consider from the budget, demand and other aspects, synchronous control system is powerful and expressive, it is usually the optimal choice; but if only some applications are not high demand places, there is no demand for real-time picture, asynchronous control system is also a good choice.
