Synchronous LED control card:
Synchronous LED control card, mainly used for real-time display of video, graphics, notifications, etc. Mainly used for indoor or outdoor full-color large screen display. The synchronous LED control card system controls the LED display screen in the same way as the computer monitor. It maps the image to the computer monitor point by point at an update rate of at least 60 frames per second.
Usually, it has the ability of multi-gray color display, which can achieve the effect of multimedia advertising. Its main characteristics are: real-time, rich expressive force, complicated operation and expensive price. A set of synchronous LED display and control card system generally consists of sending card, receiving card and DVI graphics card.
Asynchronous LED control card:
Asynchronous led display control card is also called offline LED control card or offline card. It is mainly used to display various characters, symbols, graphics or animations. Screen display information is edited by computer, preloaded into the frame memory of LED display screen through RS232/485 serial port, and then displayed and played screen by screen. The display mode is colorful and varied.
Its main features are: simple operation, low price and wide application range. Simple asynchronous LED control card can only display digital clock, characters and special characters. The graphic asynchronous LED control card not only has the function of a simple control system, but also can control the display content in different areas.