What is the difference between synchronous control and asynchronous control of full-color LED display?
Synchronous means that the full-color LED display screen displays the content of the computer screen synchronously and changes in real time, and asynchronous means that the full-color LED display screen displays the fixed content that has been sent on the card. In terms of price, synchronization is generally more expensive, but the price of a larger range of LED asynchronous control cards is not low. To determine whether a full-color LED display is synchronous or asynchronous, it can be used according to its purpose: For example, if a train station displays the remaining tickets, it needs to be updated in real time, which is synchronous. The LED door screen at the entrance of the flower shop generally displays fixed slogans, which are basically asynchronous. CRT synchronous display means that the display content of the full-color LED display screen can reflect the display content on the computer CRT display in real time and synchronously. The maximum control pixel limit of the sending card of the control system in the synchronous control mode is 1280 dots×1024 dots. The receiving card in the full-color LED display control system is preferably one receiving card per box. Asynchronous control means that the computer sends the edited content to the receiving card of the full-color LED display through the communication program. After the receiving card (with memory) saves the content, the computer edits the order, display mode, and stay time after the content is saved. Wait for loop playback. The maximum control pixel limit of the control system of the indoor full-color LED display screen in asynchronous control mode is 2048 dots×256 dots. The maximum control pixel limit of the control system of the asynchronous control mode outdoor full-color LED display is 2048 dots×128 dots. Synchronous control and asynchronous control refer to the control method of the computer to the full-color led display: the so-called synchronous control system refers to the full-color led display in which the content displayed on the full-color led display and the computer monitor are synchronized in real time In the control system, an area of u200bu200bthe computer monitor is exactly the same as the full-color LED display. For example, the control systems of Lingxingyu, Depuda, Nova, etc. are all synchronous control systems. The traditional method is to send card + accept card, and some do not need to send card. The asynchronous control system is also called the offline control system, which stores the computer-edited display data in the full-color led display control system in advance. After the computer is turned off, it will not affect the normal display of the full-color led display. Simply put, it is to use a control card, edit the content with a computer, or use a U disk to put the content in the control card, and then there is only one control card to control the full-color led display screen, without computer control.