LED display control system synchronization and asynchronous difference
2023-09-13 02:08:14
The LED display control system is the core component of the LED screen. It is mainly responsible for receiving the screen and video information from the computer's serial port or DVI port, and is placed in the frame memory to display the content. It is mainly divided into a synchronous system and an asynchronous system. Here is a comparative analysis of these two types of control systems:
First, LED display synchronization control system is mainly used for real-time display of video, graphics, notifications and so on. Mainly used for indoor or outdoor full-color large-screen 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 real-time mapping 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 operation, high prices, 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.
Second, LED display 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, circulating in a round-to-back manner, with rich and varied display modes and various changes.
Its characteristics are: simple operation, low price, 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 screen can be displayed, but the amount of playing information will be limited because the control card storage capacity has a certain range. It is suitable for places with low real-time requirements. Text / Shenzhen LED base
First, LED display synchronization control system is mainly used for real-time display of video, graphics, notifications and so on. Mainly used for indoor or outdoor full-color large-screen 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 real-time mapping 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 operation, high prices, 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.
Second, LED display 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, circulating in a round-to-back manner, with rich and varied display modes and various changes.
Its characteristics are: simple operation, low price, 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 screen can be displayed, but the amount of playing information will be limited because the control card storage capacity has a certain range. It is suitable for places with low real-time requirements. Text / Shenzhen LED base
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