What is the use of HDR function of smart TV?

With the rapid development of smart TV in recent years, smart TV has also entered thousands of households. Since 20 17, HDR seems to be the standard of smart TV. HDR seems to have become a marketing topic of major smart TVs, but what role does HDR technology play in smart TVs? Let's have a look!

Why is HDR technology hot?

First, we need to know what HDR technology is. I believe that many users find that their mobile phones have HDR function options when taking photos. When the HDR function is turned on, the mobile phone can take multiple photos with different exposures, and then merge these photos, and the final photos can be highlighted in light and dark details. This is the principle of HDR image quality processing technology.

What's the use of HDR on TV?

For HDR in TV, it refers to a decoding standard. At present, the mainstream HDR standards carried by TV are divided into HDR 10 and Dolby Vision.

At present, there is no difference between the two HDR standards, but they are incompatible. This means that when the smart TV supporting HDR 10 is used to play the video of HDR Dolby Vision standard, it cannot present its beautiful picture quality.

Advantages and disadvantages of HDR TV

HDR TV can present more colors than high-end 4K TV. This is because the color space and color depth of HDR TV are far superior to traditional TV. Therefore, the details of HDR TV in bright/dark parts are more obvious, the overall color performance is more prominent, and the overall color of the picture is more even.

However, in order to achieve the effect of HDR image quality processing, the CPU and image processor of TV need to meet certain specifications to ensure smooth picture rendering. This is why most flagship high-end models will adopt HDR technology.

Disadvantages: The operating mechanism of HDR is to make the screen present richer colors by greatly improving the contrast of the screen, which is mainly achieved by improving the brightness of the screen backplane. The brightness of the screen must exceed 1000 nits, and the brightness of the OLED panel must be at least 540 nits.

This means that watching HDR TV for a long time is more likely to cause visual fatigue than ordinary TV. Moreover, at present, there is no video website providing HDR content in China, and there are few available 4K Blu-ray discs. Another factor that restricts the popularization of 4K HDR content is piracy, not rampant piracy, but HDCP2.2 used by 4K Blu-ray discs has not been cracked widely, so there is almost no piracy.

Summary: Due to the scarcity of domestic HDR video resources, HDR technology on smart TV has little impact on user experience, so it is not necessary to consider HDR factors too much when purchasing smart TV.

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