TV does not support HDR Is it useful to buy a box that supports HDR?

The 2-300 yuan TV box can be used for a lot, it can make those non-intelligent, backward configuration, the system can not use TV regain its new life, and recently many TV boxes have begun to increase support for HDR technology, but if the TV does not support HDR How much usefulness does the TV box support HDR play? First to figure out what is HDR
HDR is an abbreviation of High-Dynamic Range. It was first applied in the field of photography, and there are generally HDR photographing modes on mobile phones. HDR photographs are synthesized from several different exposure photos, which is equivalent to extending the camera's latitude towards the bright end and the dark end to capture a larger dynamic range and eventually show more details with a photo.
Since last year, HDR technology has gradually become the "standard" for TV. Whether it is a few thousand yuan or a million yuan, HDR is the threshold for HDR. Actually, we first look at two common HDR standards.
Two Mainstream HDR Standards: Dolby Vision and HDR 10
There are currently two HDR formats on the market, one is Dolby Vision and the other is HDR 10.
From the official website of Dolby Laboratories I had a preliminary understanding of the technical principles of Dolby Vision. The implementation of Dolby Vision is a systematic project. After the video is shot, an enhancement layer needs to be formed through editing, color correction, coding, and other procedures. Compared with the traditional TV, it can bring a wider color gamut to Dolby. The horizon color space, if it is a traditional TV that does not support Dolby Vision, the enhancement layer will not work, and the TV still displays the traditional signal.
HDR 10 can be understood as a simplified version of Dolby Vision. Its hardware and coding technology is weaker than that of Dolby Vision. HDR TVs supporting Dolby Vision can be backward-compatible with HDR 10, but not vice versa. In addition, existing TV models cannot pass. Firmware upgrades get Dolby Vision functionality, but HDR 10 does. HDR 10 is widely used. HDR TVs such as millet and micro-whales support this standard.
Only HDR decoding is not enough. For HDR TVs, not only hardware decoding capability of HDR video is needed, but also TV panel support, especially to increase brightness, so as to enhance the contrast of the picture. The brightness of ordinary LCD TVs is generally around 300 nits. At present, the maximum brightness of some HDR TVs can even reach 4,000 nits. Such achievements need precise control of the screen brightness through the backlight partitioning and other picture quality technologies, but only a few high-end TVs are currently available. To show this effect.
Finally speaking about HDR content, as with 4K video, HDR content is also very poor. Whether it is HDR TV or TV box supporting HDR, what is the significance of HDR content?
In general, HDR technology can expand the contrast between bright and dark areas of an image, thereby exerting more influence on details and better reflecting the visual effects of the real environment. However, its implementation requires source, decoding, and display devices. Support for HDR to be perfect, so it is not enough for the TV box to increase HDR support only at the hardware level.


Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.

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