Colorless Flat Screen Display System solution
With the improvement of information requirements, in addition to displaying ordinary monitoring signals, more business system signals, various business visualization data, charts, etc. are required to be displayed; This not only requires that the spliced wall can accurately restore all kinds of chart displays, but also requires the consistency of ultra-high brightness and color throughout the wall. In specific application fields, there are high requirements for the color uniformity of splicing units and the consistency of the whole wall. The color display uniformity and consistency are the key issues of the wall splicing display system and the important indicators for judging the quality.
Due to the uneven lighting of LED light source, the brightness displayed on the image is uneven, there is a dark edge and dark angle effect, and the difference in light source characteristics and attenuation speed leads to the existence of the problem of color inconsistency in cells and between cells during long operation. In this regard, Weikang International has proposed a set of intelligent color management solutions, mainly to solve the problems of uniformity and consistency in color management. Through the automatic color adjustment device, the single LCD splicing display unit is compensated point by point to achieve the color uniformity in the unit. The embedded software color consistency scheduling task collects the information fed back by the optical sensors built in each display unit on a regular basis, and obtains the color data of the entire system through network broadcasting, and automatically makes the best adjustment to the brightness and color parameters of each unit, Achieve the consistency and stability of the color and brightness of the picture.
The colorless uniform wall display system scheme adopts an international professional display processing chip processor, which supports the digital video decoding capability of UHD 4K signals; Built in powerful image quality processing engine, perfectly supports sRGB and Adobe 98 color gamut, and has excellent color rendition (international professional display standard Δ E(Delta-E) <=3）； The unique uniform screen display floating-point software algorithm is used to achieve the LCD screen brightness uniformity index>=95% (difference<=5). Three core image quality processing technologies of achromatic uniform wall display system:
1. Color Space Adjusted Tech.: gamut correction technology
This technology can achieve accurate correction of color gamut such as sRGB and Adbobe98. After correction, the color space coverage is as high as 98% or more, gamma, etc. fully conform to sRGB, and the color display is more realistic and accurate.
2. Dynamic Uniformity Management Technology: Uniformity correction technology
This technology uses an original floating point software algorithm for uniform screen display, which makes each area of a single LCD screen highly consistent or similar in brightness and color temperature, so that the display uniformity of a single screen can be improved to 95%. Before correction, the uniformity of ordinary manufacturers is 75% – 85%. There will be inconsistencies around and in the middle of the screen, and the display effect of a single screen is poor.
3. Auto Color Adjust Tech.: Full automatic white balance correction technology
This technology uses the international advanced professional two-dimensional color analyzer to analyze the real-time LCD screen, and adopts the leading automatic white balance correction technology to correct the color temperature and brightness of each screen, so as to ensure that the display of each splicing screen is consistent.