LED display control system related principles
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January 14 10:04:41, 2020
Led display industry so-called control system is what kind of principle, led display control system, there are two kinds of synchronous systems and asynchronous systems. Synchronous system: The content on the led display and the computer monitor is completely synchronized. Synchronous control system has those characteristics? Synchronous control system is mainly used for real-time display of video, graphics, notifications and so on. Mainly used for indoor or outdoor full color LED display. Led display synchronization control system control display screen is basically the same as the computer monitor, it at least 60 frames / second update rate corresponding to the real-time mapping of the computer monitor image, usually has a multi-gray color display capabilities , can achieve the effectiveness of multimedia advertising.
Its characteristics are: real-time, rich performance, more complex operations, and the contents of the computer monitor is completely synchronized, so that if the computer is turned off, then the led display will not be displayed, so the playback time will be subject to certain restrictions . This kind of system is mainly used in places with high real-time requirements. What is "asynchronous control system"? Asynchronous system: The content on the led display and the computer monitor is not synchronized. After being edited on the computer, it is sent to the control card and the control card is displayed again. Asynchronous control system has those characteristics? Asynchronous control system, also known as led display offline control system or offline card. Mainly used to display a variety of text, symbols and graphics or animation. The screen display information is edited by the computer, pre-inputted into the frame memory of the LED screen via the RS232/485 serial port, and then displayed on a screen-by-screen basis, and the cycle is repeated. The display mode is rich and varied, and the LED lamp bar screen is varied.
Its characteristics are: simple operation, a wide range of use. The biggest feature is the ability to control the contents of the display screen in areas that are not synchronized with the contents on the computer monitor. After being edited on the computer, it is sent to the control card and the control card is displayed again. Therefore, even if the computer is turned off, the led display can be displayed, but the amount of playing information will be limited because the control card memory has a certain range. It is suitable for places with low real-time requirements.
What are the advantages and disadvantages of these two control methods? Advantages of synchronous control: With computer systems, superior performance, suitable for places with fixed positions and high display requirements. Many years of development system is mature, full-featured, supports live video and other methods. Large load range, good display effect, suitable for traditional large-screen projects. Disadvantages of synchronous control: Reliance on computer systems, severe limitations in homogenization of playback venues, fierce market competition, and the traditional project market tends to be saturated and weak. Advantages of asynchronous control: The performance of embedded chips is rapidly increased, and the growth of asynchronous systems is accelerated. The programs are accepted, stored, compiled and other functions in one, and the applications are more flexible. Diverse functions and more points of purchase help differentiate marketing. Disadvantages of asynchronous control: The client's awareness of the asynchronous system needs to be improved. The limited range of the loaded program is less effective than that of the synchronous system. However, the price of the two led displays is not the same.
Synchronous control system: This LED screen is installed with a synchronous control system. The reason why the synchronous control system was chosen is because the main purpose of this LED screen is the display of the event related to the venue. It has high requirements for the richness and real-time performance of the screen. Therefore, this LED screen loading synchronization control system is the most appropriate choice. Asynchronous control system: This led display is installed using an asynchronous control system. The reason why the asynchronous control system was chosen is because the main purpose of this screen is advertising. It is precisely because this system can achieve graphic transmission through the cloud server in a timely manner. Sub-regional advertising, message insertion, fixed-point publishing tasks and other operations, saving a lot of manpower and material issues, so this type of led display