The video processor is a witness and iconic device for the birth, growth and maturity of full-color LED displays. Today, LED-specific video processing equipment has gradually matured in this process. The advantages and disadvantages of LED video processors have a direct impact on LEDs. The display effect of the display.
In general, the LED video processor is a dedicated video processor for LEDs. The task it needs to complete, in simple terms, is to convert the image signal from the outside into a signal that the LED display can accept. In this process, the LED video processor generally needs to complete the following processes:
1. Resolution specification conversion: Generally speaking, the signal resolution provided by the image signal source (such as Blu-ray DVD, computer, high-definition playback box, etc.) has a fixed specification (refer to VESA, ITU, SMPTE and other standards), and LED display The modular splicing display of the screen makes its resolution almost any value. The video processor converts various signal resolutions into the actual physical display resolution of the LED display.
2. Color space conversion: The color gamut of LED displays is very wide, and the color space of most image signals is relatively small (such as NTSC). In order for the led display to have an excellent image display effect, color space conversion must be carried out.
Third, the bit depth increase: The gray level of the current LED display has been increased to 16 bits and 17 bits, but the input signal source is mostly only 8 bits. Therefore, following the advent of the era of high-definition display, the application of 10-bit or even 12-bit processing technology in video processors has become a general trend.
4. Scaling: During the conversion of the resolution specification, the image needs to be scaled. Whether the resolution is increased or decreased, the complete image can be displayed on the screen.
5. Image processing and enhancement technology: Digital image processing technology has developed from the 1920s to the present, and a large number of patented technologies have emerged. For example, DCDi, qACC2, ACM3D and other Emmy award-winning Faroudja laboratory's series of patented technologies. These technologies have undoubtedly greatly improved the visual effects of images.
