LED display preferred Shaanxi Hi-Tech Optoelectronic Technology Co., Ltd. specializes in the technical quality of a ..

LED display preferred Shaanxi Hi-Tech Optoelectronic Technology Co., Ltd. specializes in the technical quality of first-class level of service trustworthy 1 3 5 7 2 4 6 9 9 4 3 LED screen can display eye-catching, colorful screen, marveling at the display at the same time, Have you ever wondered how the technology is implemented, which is now under treatment you about LED screen video signals. LED screen can display a variety of information, text, graphics, animation, graphics, video programs, etc., LED screen in the drive to reduce power consumption and improve efficiency, the difficulty of reducing the degree of color retention and other aspects of consistency than other flat panel displays bigger . This is because the light-emitting diodes is no anger of the device, the switching time is in nanoseconds, no memory, coupled with its display area, the signal transmission distance is long, you can not use the most advanced COG, SOB and other large integrated The manufacturing method of the circuit. Following is a brief introduction on the LED screen's image signal processing method: LED screen for image signal processing generally in two ways: One way is to use a dedicated signal processor LED screen, the TV signal is interlaced, after processing into progressive scan signal, and then play on the LED screen. Bit high-performance processing of up to 10 yuan can process more, when to do the scan conversion interpolation operation, the motion compensated prediction and scan conversion and the like. Now high-end large-scale LED screens also have adopted this approach, and more image signal processing, try to turn the signal is raised to broadcast, of course, and better results. Computer image processor is also subject to this process, and then sent to LED screen display. Processing technology is constantly evolving, there are many new algorithms have been proposed. We are familiar with the large rear projection TV and plasma TVs are widely using this method, the effect is much better than regular TV. In this case, the output signal is usually converted signal according to the format described in even more precise. Another method is a multimedia method, commonly referred to as synchronized LED screen method using conventional multimedia card capture TV signals, and demodulates, filters and tone separation. Image signal after A / D conversion, MPEG-compressed encoded for storage. Then decompressed during playback viewed directly on a computer monitor. LED screen signals sent via a dedicated interface card is available on the computer's DVI interface or graphics, but also some processing on the interface card. In this case, LED screen is actually equivalent to a part of the monitor or a computer, often referred to as windows, can correspond to the synchronous display. Because computer monitors are progressive scan, so if there is no significant signal was evacuated to send the frame extraction line processing, so, LED screen display format is the format of the monitor. For example, VGA format is the number of pixels of 640x480 progressive scan format, the scan update rate of 75Hz. But here 75Hz progressive scan signals, not the image source itself enhance image quality does not improve, in fact, even worse than the standard 50Hz interlaced, similar to DVD or VCD effect, which is often confused place. As some LED screen were images accessible, such as the screen information even discard only the information sent to the odd screen display, the effect is certainly worse. Incidentally, the case of non-image program is relatively simple, although some game animation also requires good continuity, but played on the LED screen animation, the frame rate more than 10Hz can accept. By the embedded controller or microprocessor controlled display screen, the program generated by the controller, the speed controller is limited processing capability, providing the screen fast enough, it will cause the screen not continuous. The most typical phenomenon is controlled by the MCU bar screen, left or right when the text is not smooth but leaping. Computing experience and can draw a dot matrix characters by the 10 16XI6 strip consisting screen, full-screen if you want to be at a rate of 5 seconds left, to move even consistency, it must meet the 15Hz frame rate or higher. This article is excerpted Chinese LED display network http://www.cnledw.com/inter/show-8- one Ba Ba Lu Triple SEVEN .htm