For the new technology of video and audio, Xiaoyao has always been very enthusiastic. Following the popular and somewhat controversial article on the previous article on HDR.
In the 4K device selection more and more, access to 4K content more and more channels, 4K content emerges in an endless stream today, in the concept of Aunt Zhang bought must be worth, Xiaoyao another code on two kinds of HDR technology How to choose a device without losing articles.
Every time new technologies come out, they must be accompanied by format wars. Recall the VHS and Beta format battles of the videotape and the Toshiba and Sony HD-DVD and Blu-Ray battles.
VHS VS Beta
Which time is not thrilling, twists and turns, soul-stirring. Eventually, one party gains market dominance and the other quits the market. Of course, there are also ways of peaceful coexistence like DTS:X and Dolby Atmos.
Although Xiaozhuo briefly explained the principle of HDR and the benefits it brings in the best AV movie. However, Dolby Vision and HDR10 do not mention two different formats for HDR . I believe that through today's science popularization, the majority of value-friends will understand the HDR format supported by this model when choosing an HDR TV, and finally how to choose.
one. Dolby Vision (Dolby Vision) 
Strictly speaking, Dolby Vision is a collective term for a series of image enhancement technologies. Here we focus only on this part of HDR.
History: In 2007 Dolby Laboratories acquired a company named BrightSide technologies and produced the prototype of the first HDR display. Since then, Dolby has continued to invest in this technology and officially named Dolby Vision at the 2014 CES.
At the heart of this technology is an electro-optical conversion function called Perceptual Quantizer (which converts electrical signals to visible light), which gives birth to and defines a higher dynamic range. This technology defines the brightness standard at 10,000 Nits (normal TV brightness is only around 100-200nits). However, there is currently no practical display device that can achieve this brightness, so the current Dolby Vision brightness target is a more practical 4,000nits . Content recorded with Dolby Vision also includes up to 12-bit color depth, Rec 2020 color gamut, and 4K resolution .
Rec.2020 color space
Dolby Vision is a complete set of patented solutions. Content, playback sources, and display devices must be compatible with the Dolby Vision standard. Also, each Dolby Vision display device comes with a dedicated chip to verify the device's output capabilities (brightness, color space, etc.), which is transmitted to Dolby Vision's playback source during playback. The signal source will optimize the output frame-by-frame based on these display device data, both taking into account the capabilities of the display device and maintaining the original signal's intent.
Note: All Dolby Vision display devices use this same conversion algorithm. And due to hardware algorithms, Dolby Vision cannot be supported through firmware updates.
Dolby, as the leader in the development of today's cinema technology, not only has a sound in sound technology, but also introduces Dolby Cinema, a complete solution that enhances the effects of cinema sound and picture. Dolby Atmos is responsible for the sound, and Dolby Vision is responsible for the picture. The first Dolby Cinema was opened at the JT Bioscopen Theater in Eindhoven, The Netherlands, on December 18, 2014. Therefore, Dolby Vision is the earliest practical HDR technology.
JT Dolby Vision Cinema
At present, if you want to experience the real best sound and picture effects in a movie theater, it is estimated that in addition to the old IMAX theater, it should be Dolby Cinema. For the domestic outlets recommended by Dolby's official website, please refer to the following figure:
Domestic Dolby Vision Cinema
For home users, there are still many options for supporting Dolby Vision.
The first is the TV brand, VIZIO, LG, Philips and TCL Television announced that it will support Dolby Vision. The current situation is that both Vizio and LG models are available for sale. However, Philips and TCL only released news and no actual products have been sold yet.
In terms of content, Sony, Warner, Universal and MGM will cooperate with Dolby to distribute home video content in Dolby Vision format. Amazon, Netflix and VUDU App directly play Dolby Vision content on compatible TVs. Here, Siu-Chan can't help but hope that the domestic platform can also launch its own HDR content as soon as possible, so that the utilization rate of HDR TV in China can be increased.
VUDU's Dolby Vision LEGO Movie
Netflix Dolby Vision Marco Polo
For disc lovers, Dolby Vision is less attractive. Because it is not the official HDR format for the new generation Ultra HD 4K Blu-ray disc, it can only be listed as an optional format.
And the only two Samsung and Panasonic UHD Blu-ray players on the market currently do not support Dolby Vision's HDR content.
It is said that the new generation of Xbox one S can not support Dolby Vision.
There is currently no 4K Blu-ray disc that supports Dolby Vision. . . Mourn
Why doesn't Samsung add Dolby Vision support to its latest UBD-K8500 player? The answer is very simple: Samsung is another HDR format - the leading brand of HDR10 . Let's take a look at the HDR10 situation.
With this sign, support for the HDR10 format
When HDR develops and becomes a usable TV technology, Samsung, SONY, LG and other home appliance makers hope to have a more open platform than Dolby provides. Saving Dolby patent fees, without adding a process for submitting certifications, weakens the control of their own products. So they began to develop their own solutions for HDR video and eventually evolved into a standard - HDR10.
The HDR10 is built on the same core technology features as Dolby Vision (PQ mentioned above) and is similar to the Dolby standard in terms of brightness, color, etc., but the HDR10 only supports 10-bit color depth, and Dolby is the highest 12- Bit .
12bit can display up to 68 trillion colors
The main difference between the two technologies is the display terminal's handling of HDR content. The HDR10 does not have a dedicated chip to monitor the status of the feedback display device, so it cannot be adjusted based on device differences. In general, HDR10 is less accurate. The actual playback is more dependent on the capabilities and limitations of the TV.
However, since it is the standard set by so many big companies in the field of home appliances, HDR10 has indeed become the choice of most HDR-compatible TVs. Basically, if HDR TV does not specifically support Dolby Vision, it is the HDR10 that is used. The HDR10 is also a mandatory standard for Ultra HD 4K Blu-ray, meaning that all Ultra HD Blu-ray players support playback of HDR10 content. And, all 4K Blu-ray discs are HDR supporting HDR10 format.
4K Blu-ray Disc Supports HDR10, Streaming Dolby Vision Only USB Storage
At CES 2016, Samsung, Sony, Hisense, Sharp, Philips, and LG all showed support for the HDR10 TV. LG announced that it was the first brand to support both HDR formats at the same time, but Philips soon announced that its 8600 series also joined two technologies. VIZIO will also upgrade the Reference and the new P Series to support HDR10 through a firmware upgrade.
As for content, Netflix has already begun to add support for HDR10 and Dolby Vision to streaming content. Amazon and SONY also began offering Ultra HD 4K content in HDR10 format online.
Dolby Vision version of VUDU, and HDR10 version of 4K Blu-ray disc. Crazy Max 4
For users who need discs, Samsung's UBD-K8500 is the cheapest Ultra HD Blu-ray player. Panasonic's DMP-UB900 is the best picture quality machine, and users can also choose the Xbox One S as the most versatile machine .
to sum up:
1. From the point of view of the technology itself, the hardware solutions used by Dolby Vision are more advanced and achieve better restoration accuracy through frame-by-frame rendering. TVs that support HDR10 cannot obtain Dolby Vision through firmware upgrades. TVs that support Dolby Vision may be able to obtain HDR10 through firmware upgrades.
2. In terms of actual results, currently available evaluation reports indicate that Dolby Vision looks more natural and will not have HDR10 glare (LG TV vs HDR10 and Dolby Vision models).
3. From the perspective of content and peripheral playback device support, the HDR10 has a wider range of options, both UHD 4K Blu-ray and online streaming media. And Dolby Vision can only be enjoyed through Netflix, VUDU and Amazon online streaming (of course you can go to the cinema too).
4. From the perspective of the display device itself. Currently there are few brand models supporting Dolby Vision (LG, Vizio), while HDR10 can choose most of the brands that support HDR in the market.
I believe that most of the friends here will understand how to choose.
in conclusion:
In order to maximize the protection of investment considerations, should choose to support Dolby Vision and HDR10 dual-standard products, maybe one day, Dolby Vision to a content counterattack outbreak, UHD Blu-ray discs are distributed with Dolby Vision it?
Users who are eligible to watch Amazon, Netfilx, and especially VUDU live online, should select Dolby Vision products. Without him, a large number of UHD movies are waiting for you. How can a TV not be restored by Dolby Vision? However, it is estimated that few users have this condition in China.
In addition, feel free to choose your favorite HDR10 TV, brand, and size. A lot of Ultra HD Blu-ray disc support, the player is not a problem.
Finally, Xiao Shao must turn over the brand of HDR TV currently on the market. Several representative brands can't miss it. Dolby Vision camp:
Needless to say, LG should become the preferred brand for the Dolby Vision camp. why? Because LG supports Dolby Vision's many models, because it has OLED this trump card, because it introduces models faster, because it is easy to buy. In fact, Xiaorong seems that at present, the domestic market is the only Dolby Vision option in the domestic market . Vizio did not formally enter the domestic market. Philips and TCL have only issued a press release symbolically. No actual product launch... Lightning does not rain.
LG's OLED flagship: OLED65G6P
Xiao Shao Comments: OLED contrast advantage is simply born for HDR technology, it should be one of the best performing HDR TVs... (Ad Law restrictions, no way Kazakhstan). For 65-inch TVs, this price is slightly more expensive. No way, who let him be OLED.
Xiao Shao Comments: LG's new products, quantum dot technology, LED backlighting. The same 65-inch, the price is much cheaper.
Vizio Reference Series
Xiao Shao Comments: The United States TV brand, market share leader, in the end there are some domestic sales? Anyway, the fever is not seen, then the CN.VIZIO.COM domain name is a few words, or all in English. Well, do not tangled this, the reference series a total of two models available, 65-inch and 120-inch, the price span is slightly larger. However, this 120-inch is not better than LeTV's 120-inch. At least I have Dolby Vision.
HDR10 camp:
Samsung Samsung:
Xiao Shao Comments: New 65-inch HDR is also using quantum dot panel technology. Compared to about six months of Samsung China's cover for HDR, this Samsung should be considered a big force on HDR TV. At the beginning of the product introduction, the sign of the HDR 1000 was marked. And so on, why is there more than 2 0, what is this new technology of cattle B? Looking further down, it is understood that Samsung is able to achieve a brightness of 1000 nits in order to promote new televisions, thereby making HDR more effective. Let's work hard, Samsung, to know that 1000nits is the minimum standard for HDR brightness, the goal is 4000nits, remember the standard that the article said at the beginning? However, after all, Samsung is one of the founders of the HDR10 standard. There must be places where other brands do not understand the standard. It is believed that the actual results are true.
Sony, another S, what efforts have been made to improve the HDR effect?
Xiao Shao Comments: As a pioneer of 4K, professional 4K equipment provider, SONY's technical strength has always been beyond doubt. This time, SONY brings you a technology that is crucial to HDR:
Dafa's LED light control technology
Pay attention to the key sentence, "Ensure that each LED light source can operate independently" . God, I remember that Xiaogeng once read an article introducing HDR technology. He said that HDR technology is not only a blind increase in brightness, but also more important. It's the same as the contrast of the screen, brighter and brighter, darker and darker. This is precisely the weakness of the LCD panel, and is the strength of OLED TV. This is the reason why Xiaozhu could not help but praise the effect of OLED TV. HDR developers therefore came up with a way to set up LED backlights for LCD panels with sub-zone control switches and brightness, thereby effectively increasing the contrast of the same screen (this is also the technology used by most HDR TVs today). Now this technology has been developed from SONY to control the degree of single LED (note that it is a single oh) . Imagine if the number of LEDs is enough, then the effect is not infinitely close to OLED? Think carefully and fear. When you see this series of Dafa televisions, you must worship on the spot and look at the actual results and believe in recharging.
As for the rest of the brands HDR10 standard, Xiaokang will not be listed one by one (it is also possible that Xiaokang may be ignorant, missing a representative model, please correct me).
Well, I’ll be here today. I wish you all a happy and happy time.
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