With the progress of IC technology, the development of processor technology, DSP, RISC, VLIW three different technologies of the processor gradually unified, and now the multimedia processor combines three kinds of processor technology. SOC technology is developing very rapidly, VIDEOPROCESSOR has been very powerful. The video processor integrates a number of peripheral circuits, including VIDEOINUNIT, VIDEOOUTUNIT, AUDIOINUNIT, AOIOOUTUNIT, and some coprocessors, such as variable length encoder / decoder VLX , Motion prediction ME, DMA controller, IIC controller, etc., the integration of these IP modules greatly enhance the processing power of the VP, these VP is also the name of the DSP.
Video processor is a full-color LED display the birth, growth and maturity of the whole witness and iconic equipment, LED-specific video processing equipment in this process is also gradually mature, LED video processor directly affects the merits of the LED display Screen display. In general, LED video processor, is the LED dedicated video processor. And it needs to complete the task, simply, that is, from outside (such as Blu-ray DVD, computer, high-definition playback box, etc.) image signal into the LED display can accept the signal. LED video processor has a direct impact on the merits of the LED display display.
LED video processor is how to complete the perfect display of LED display? Mainly include the following:
First, the screen zoom
LED display display is point to point, which determines the LED display can only display their own physical resolution of the same size of the screen. LED video processor can scale the image, the screen output to any size, complete the entire desktop mapping to the LED screen screen. Whether the resolution increases or decreases, you can make the screen display the complete image.
Second, the resolution specifications conversion
In general, the image signal source (such as Blu-ray DVD, computer, high-definition playback box, etc.) to provide the signal resolution has a fixed specification (refer to VESA, ITU, SMPTE and other standards), and led display modular splicing display, So that its resolution can be almost any value. The video processor converts the various signal resolutions into the actual physical display resolution of the led display.
Third, the signal conversion and switching
The video processing device is capable of performing format conversion between a number of signals. Video processor Another important function is to have multiple signal access time, the various signals are managed, the flexibility to quickly switch between the various signals.
Fourth, the image quality upgrade
Digital image processing technology from the 20th century, 20 years to the present development, there have been a large number of patented technology. Such as DCDi, ACC2, ACM3D and other access to the Emmy Faroudja laboratory a series of patented technology. These technologies will undoubtedly make the visual effect of the image has been greatly improved. LED display itself pixel pitch is much larger than some other flat panel display media, therefore, for image processing technology, especially image enhancement technology has strict requirements. High-quality LED video processor can use advanced algorithms to modify the poor image quality of the signal, the implementation of de-interlacing, edge sharpening, motion compensation and so on a series of processing, enhance the details of the image, improve picture quality.