The CES 2016 Consumer Electronics Show at the beginning of the year brought a signal: Your next TV should support HDR. Almost every major TV brand has exhibited its own HDR TV at CES, which is another TV development trend after 4K.
First let's take a look at what HDR TV is.
HDR: screen + chip + content trinity
The reason why HDR is called a more complicated standard lies in the particularity of its form of expression. HDR literally understands High Dynamic Range, which is a high dynamic range. In fact, your phone should have this shooting mode. But when it comes to the TV field, HDR doesn't take a few photos at the same time as a photo.
First, HDR TVs require panels with higher brightness. Second, HDR TVs require TV chip support. Finally, HDR needs corresponding content, that is, video resources, and three factors are indispensable.
In terms of hardware, a higher-brightness panel is obviously only a threshold, but at the same time, even if it meets the standard, it does not mean that all HDR TVs are equally good, depending on other aspects of the TV manufacturer's accomplishments, such as Panel color gamut processing technology, image processing engine, and more.
So there is a 4-color HDR technology.
What is 4-color HDR technology?
The 4-color HDR Skyworth is combined with the high-end HDR developed by LG. It adds HDR algorithm for 4-color 4K screen based on ordinary HDR, thus surpassing ordinary HDR.
We know that HDR TVs require a panel with higher brightness, but if the contrast and color saturation do not achieve the desired effect of HDR, then the HDR TV viewing effect is equally compromised. The emergence of 4-color HDR technology is to enhance the display of ordinary HDR TV.
4-color HDR technology principle
So how does 4-color HDR technology improve contrast and color reproduction for better HDR viewing? Let's take a look at the principle of 4-color HDR.
Here, let's take a look at the construction of the TV. The theme of the TV is composed of a screen body, a T-con board and a main chip, the main chip is a video decoding chip, and the T-con board is a screen driving chip.
For 4-color HDR, the first screen should be 4 colors and 4K, otherwise the conditions can not be met; secondly, the HDR algorithm is added to the screen driver chip to make it play the optimal level of the screen pixels for better display. .
Under the same backlight brightness, the 3 color screen should reach the same 4 color 4K screen display brightness, then the R/G/B three primary colors need to be greatly enhanced, which will cause a problem, causing the screen to be overexposed, and finally the screen is panned. The phenomenon of white, which also confirms the above mentioned, even if the screen brightness is up to standard, it will not necessarily present a better HDR picture. The 4-color 4K screen body, by adding the HDR algorithm to the T-con driver, makes the R/G/B three primary colors increase the brightness without losing the saturation, and the white sub-pixels are greatly increased in amplitude, so that the final display The picture does not appear to be overexposed, but it performs better in terms of color and is more in line with the display effect of HDR TV. This is the principle of 4-color HDR.
4-color HDR technical advantage
Now that we understand the principles of 4-color HDR and the improvement in display performance, let's look at the advantages of 4-color HDR compared to normal HDR.
1, intelligent brightening. The 4-color HDR technology does not affect the red, green and blue sub-pixels. It can independently control the white sub-pixels, intelligently identify the bright field picture and enhance the brightness.
2, the whole process is not damaged. From HDR video input to decoding to display, there is no loss of picture quality throughout the entire process.
3, SDR to 4 color HDR. The normal HDR can be converted into a 4-color HDR, which improves the picture quality based on the normal HDR.
Three conditions for achieving 4-color HDR
1, HDR decoding (main chip). The main chip needs to support the decoding of HDR video in order to decode the HDR video on the chip side.
2, 4-color screen control chip processing. The driver chip of the screen needs to add an HDR algorithm to make the HDR video be better restored through the analysis of the HDR algorithm of the screen driver chip.
3, 4 color 4K screen. The 4-color HDR technology requires a 4-color 4K screen. Only a 4-color 4K screen can make the 4-color HDR technology the best.
HDR TV has been valued and supported by major TV manufacturers, and there are more and more products on the market. In the case that the industry standards are not perfect, the HDR TV screen effect is also uneven, and the 4-color HDR technology. The emergence of the problem of the poor performance of ordinary HDR TV display, but also provides a reference model for the development of industry standards.
4-color HDR TV
Currently, the four-color HDR TVs on the market are mainly Skyworth. The OLED organic TVs S9-I, G8210, and the latest Chinese Dream series G7 all use 4-color HDR technology. Compared to ordinary HDR TVs, these three TVs. The display is even better.
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