Popular Science | What is Dolby Vision Dolby Vision?

A long time ago we mentioned that HDR is not only a specification of HDR 10. There is a higher specification besides HDR10 that was developed by Dolby Labs. This is Dolby Vision. Compared to the HDR 10, the Dolby Vision has a better specification. First, it can support 4000 nits in the brightness information section, which is four times that of the HDR 10. In addition, 12 bits are supported in the "color depth" portion, and the number of colors is several ten times that of 10 bits.

In addition, HDR 10 is a set of â€œstatic dataâ€ that corresponds to the entire movie. If there are certain paragraphs in the movie whose brightness and darkness are inconsistent, there may be a case where Warmina is dark. Dolby Vision adopts "dynamic data" to provide corresponding data for each frame (frame by frame), so that the change of each frame meets the requirements of the director and the overall performance is better than HDR 10.

However, the penetration rate of Dolby Vision is far inferior to that of HDR 10. The main reason is that HDR 10 is an open specification, and Dolby Vision is a closed specification. To play Dolby Vision, it is necessary to have some correspondence on the hardware, theoretically, the player and All display devices must be equipped with specialized chips. In addition, they must obtain Dolby's authorization to allow it to enter the HDR 10.

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