LED display card is cord part of LED display part. LED display to show the variety of text, symbols and graphics 。 The content of display from a computer to edit, adoption of display control card to show the content via RS232/485 of computer. This LED display is mainly for the variety of text, symbols and graphics .first ,the information of display by computer to edit. Output the information into LED Screen memory via RS232/485 serial port。Then to display in circles. The mode of Display is rich and colorful, and display work offline. It’s flexible control, convenient operation, low cost, is widely used in various sectors of society.
Synchronous LED screen control card:
Synchronous LED control card, it’s mainly used to display real-time video, graphics, notification. is widely used in indoor or outdoor full-color large screen display.the work way is same Synchronous control system led LED display control card and computer monitor, it takes at least 60 frame / sec update rate corresponding to update the map image on a computer monitor, typically have the ability to display multiple shades of gray, it’s can be achieved multimedia advertising effect. Its main features are: real-time, enrich expressive, the operation is more complex, high price. A synchronous led display control card system in general by sending cards, reception cards, and DVI graphics cards. Synchronization led display control card.Asynchronous LED display control card is also called offline LED control card or offline card. It’s mainly used to display a variety of text, symbols and graphics or animation. Screen display information by computer editing, frame memory through the RS232/485 serial port implantation of LED display screen in advance, and then screen display, play in circles, display way is rich and colorful, diverse. Its main features are: simple operation, low price, wide application range. Simple asynchronous LED controller card can only display digital clock, text, special character. Graphic asynchronous LED control card function that has simple control system . the biggest feature is according the zone to control display screen. Support analog clock display, countdown, pictures, tables and animation display. With a timer switch, temperature control, humidity control and other functions.
Synchronous LED display control card:
The card of send To plan or arrange the show content according to a specified form and play order at VGA display. Other side the show contentAt VGA display will be send to control board through card of collect.Collect card is interface card using to connect of display card and LED screen.Receiving card can be receive video signal (control signal and data signal) from the sending card. the data of video signal through the data separation, the data field is stored in the external cache, then according to the zone to read, transmitted to the display screen.
Asynchronous LED controller card:
The computer Edited display data will be stored into LED display control card, does not affect the LED display after the shutdown of the computer. this system is asynchronous LED controller card.