With the development of technology, the words "4K" can be seen on all major video platforms. It can be seen that 4K is attracting more and more attention. With the increase of 4K resources, many domestic projection brands have also launched 4K projectors. But when it comes to 4K

With the development of technology, the words "4K" can be seen on all major video platforms. It can be seen that 4K is getting more and more attention from everyone. With the increase of 4K resources, many domestic projection brands have also launched 4K projectors. . But when it comes to 4K projectors, the debate between "native 4K" and "doubled 4K" is inseparable. So what is the difference between native 4K and dithered 4K? Is the gap between the two big? Let’s take you to find out.

As we all know, when we buy a projector, we mainly look at two data about the display, one is the display chip and the other is the resolution. The display chip determines the resolution of the projector, and the resolution determines the clarity of the picture. The larger the size of the display chip, the higher the resolution and the clearer the picture.

As shown in the figure above, common projector display chip sizes are 0.23DMD, 0.33DMD, and 0.47DMD, and the corresponding standard resolutions are 480P, 720P, and 1080P respectively. The debate about "native 4K" and "shake 4K" is also It depends on whether the display chip has native 4K resolution.

Anyone who knows about projectors knows that most DLP smart projectors currently use DMD display chips provided by Texas Instruments . If you want to achieve native 4K resolution, the DMD display chip must reach 1.38 inches. Sony 's first-generation native 4K chip is 1.38 inches, which can directly display 8.3 million pixels, and the price is "expensive", like Sony, JVC, the cheapest ones cost 30,000 to 40,000 yuan, so it is rare to see such a large size chip on the market. And for ordinary consumers, projectors that often start at 10,000 yuan are not very cost-effective at all.

Therefore, it is definitely impossible to buy native 4K for less than 10,000 yuan. You can only buy a projector that can "buffer" to 4K. So, what is Dou 4K? Dithering 4K means that the DLP projector uses Texas Instruments' (TI) XPR pixel dithering technology to quickly move each projected pixel to an adjacent position, so that it can appear to our vision with more resolution than the native resolution. The picture look and feel is doubled, or even nearly four times that of the native resolution.

For example, the resolution corresponding to the 0.47DMD display chip is 1920*1080. XPR technology is used to move pixels horizontally and vertically in four directions at a frequency of 240HZ, thereby achieving 8.3 million pixels of true 4K. In the same way, the corresponding resolution of the 0.66DMD display chip is 2716*1528, so it only needs to be superimposed twice to get a true 4K 8.3 million pixels.

Although this technology is not as good as native 4K, it can greatly improve the resolution visible to our naked eyes. The most important thing is that it is precisely because of this technology that the price of 4K projection has been lowered to less than 10,000 yuan.

The following picture shows the comparison of the effects of 1080P, TI's XPR technology, and native 4K:

From the comparison, it can be seen that the 4K picture presented using XPR technology is much clearer than 1080P, and the details are more accurately depicted. , but there are still certain differences compared with native 4K images.

Seeing this, someone may ask, "Is dithering 4K real 4K?" The answer is: dithering 4K is also real 4K! According to the official website of the authoritative U.S. Consumer Technology Association (CTA), as long as the projected image reaches 8.3 million pixels, it is true 4K. Therefore, 4K dithering can also reach 8.3 million pixels, which is also true 4K.

In summary, due to cost constraints, native 4K projectors often cost more than 30,000 to 40,000 yuan, and the overall price/performance ratio is not high. However, 4K 4K achieves an improvement in projector resolution within a more economical price range, and also brings With the advent of higher frame rate playback, not only the cost is lower, the definition is higher, but also for ordinary consumers, they can easily enjoy the ultimate movie viewing experience brought by 4K resolution, which can be said to kill two birds with one stone.