LED (Light Emitting Diode) display is used for light-emitting diode display components to the modern electronic digital technology developed in a display screen. With the development of LED display, LED display from the original simple text to show the development of the current text, graphics, animation and video and other multimedia applications, it has a high-resolution, color, perspective, the work of stability, Long life, low power consumption. As a result of the modular structure of the unit, the screen size can be flexible and user requirements to fight the system; its ultra-high brightness, it shows that Hu Neiwai in an irreplaceable role.

LED display directly controlled by computer, with the popularity of computer network communications, sources of information more widely, so the information society, it occupies an increasingly important location. LED display screen with its large, ultra-long-range, ultra-high brightness, super-vision, flexible display, and other unique advantages, the international community become the most widely used display system. In our information-based era, it reflects a certain aspect of a country or a city's appearance. Graphic color video screen 8 * 8 red, green color matrix block for light-emitting devices, a single point of monochrome gray 256 were transferred to form a single 256-color changes, a domestic initiative to reach international advanced level. Leader in Taiwan, South Korea similar products. This screen can display graphics on the computer screen and data with multimedia access cards and video recorders, television shows and video programs, widely used in hospitals, banks, courts, exhibition hall, railway stations, squares, sports hall. Is the home of the best advertising tool.

◆ two-color display of the advantages of indoor two-color LED display the advantage of being able to show the various types of computer information, video can also access information. Allied will use 1024 gray-scale image coding, and then take from 256 grayscale display, with the realization of FPGA hardware, real-time, substantially improved the image of the display, in the video circuit to receive, store circuit, high - Write speed circuit, scanning display control circuits are carried out to deal with anti-jamming, and the convenience of system maintenance, easy to operate, according to the different needs of users in real time, dynamic display of different content in different formats.

◆ LED Display and Control Systems Control Theory About 256 gray-scale LED video display control system by the video capture card, the controller and display control unit constitute a (long-distance can increase the signal repeaters); video capture card from a standard computer display interface Access to the digital display signal to convert it to cascade line of the necessary signal format; it can be a standard computer interface (such as PCI-bus) control signal, so that users of computer software to complete the LED display control regulation, And to make video capture card to adapt to different specifications of the LED display requirements, with a high degree of compatibility. Computer control systems and broadcast through the local area network connected machine, the machine can be broadcast on local area network access with any computer one by one, so as to realize resource sharing. Cascade controller line to connect serial, display data in the completion of the LED screen in one direction on the distribution. Each line from the cascade controller bus access to its data showed the need. As the cascade line interface to add the location information, makes no need for external controller line to set up automatic positioning. LED display modules marked by the control system and the external drive circuit. Modules also serial cascade and the way to complete the data show that in the LED screen in the other direction on the distribution line under the control of the controller's display modules up to more than 60HZ scan rate.

Two-color video display system after the completion of the system has the following features

★ support VESA standard mode (1024 * 768 256-color mode and below), auto-tracking model, the model 640 * 480 television shows video programs, such as video and laser discs.
★ support of the PC microprocessor line on any operating system and software platform.
★ modular design, any combination of size.
★ Video: Play a variety of equipment from the video signal, and at any time be able to switch different video sources, multiple video sources through multi-media monitoring and switching controller at the same time.
★ text: the text of a variety of multi-player characters, fonts and different text messages, but also to achieve page, move, rotate, flurries, rolling, and so on more than 10 kinds of blinking display.
★ computer images: can play different formats of graphics, image files. Such as BMP, JPG, JPEG, GIF, and so on.
★ animation: to play Animatorpro, 3Dstudio software, such as two-dimensional, three-dimensional animation, and supports compression using Card collection of AVI signal, the package has a convenient interface interface, a rich library of material, physical libraries and advanced rendering techniques, to Three-dimensional animation production of high-quality, realistic advertising ideas become reality.
★ Music: support for the sound card and CD-ROM, and other multimedia equipment, can play WAV / MID, and other sound files, but also direct control of the CD turntable.
★ making easy: Windows development tools are based on object-oriented multi-media platform, WYSIWYG, to take the icon toolbar, without programming.


Reference link: http://www.17led.com/LEDdisplay/2008-03/10.html