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Print 22 comment(s) - last by Reclaimer77.. on Jan 8 at 12:26 PM

Dolby has found a way to use the full gamut of colors, local contrast and peak brightness

Dolby unveiled a new TV technology today with the goal of offering a picture that mimicked what the human eye sees, and that technology is called "Dolby Vision." 

Dolby Vision is supposed to offer brightness, contrast and colors in a way that no other television has been able to accomplish before. Dolby said that it threw traditional TV and cinema color-grading standards out the window, since they're based on old technologies, and has found a way to use the full gamut of colors, local contrast and peak brightness.

Today, video is created using a reference peak brightness level, and the unit of measurement is called‎ a "nit." Old TV displays had an average peak brightness of 100 nits, and that’s still the same reference level used today (although TVs today tend to take that signal and expand it to match their own peak brightness typically between 400–500 nits). But making the picture too much brighter will cause it to fall apart.

What Dolby found is that this peak brightness of 100 nits was far too small. The human eye is capable of seeing a wide range of brightness, from 1.6 billion nits while the sun is up at noon to .0001 nits when there's nothing but starlight. The 100 nits just wasn't covering it, as this number tends to only allow bright colors or dark colors to pop out in detail, but never both.

Dolby fixed this by building a 1080p, liquid-cooled experimental display with a backlight made up of 18,000 RGB LEDs and a peak brightness of 4,000 nits. This is huge, since standard reference displays use around 4,500 RGB LEDs and as we know, only 100 nits.

 

[SOURCE: Dolby]
 
This change in rules made the company able to color grade footage with a much wider range and improved contrast.

"The creative community is thrilled to have an expanded color palette and the added contrast so that viewers can see details that might have previously gone unnoticed," said Roland Vlaicu, Senior Director, Broadcast Imaging, Dolby Laboratories. "Meanwhile, TV manufacturers can offer consumers a dramatically improved video experience, regardless of screen size or viewing distance." 

Dolby Vision's technology covers the whole deal from the mastering process to the actual displays. The company said it has already signed on with hardware makers Sharp, TCL and Vizio for Dolby Vision-packed TVs.

In addition, content providers like Netflix, Amazon Instant Video, Microsoft’s Xbox Video and Vudu have all agreed to offer Dolby Vision-specific content. TV shows and movies will have to be graded for the Dolby Vision format specifically, but Dolby is already taking care of that by offering reference displays and software plugins to companies. 

Dolby Vision TVs are expected to be ready to hit the market by holiday season 2014 (which is also when major Hollywood studios should have films equipped for Dolby Vision). A few prototypes are hanging around at the Consumer Electronics Show (CES) 2014 this week. 
 

Source: Dolby



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Dolby and their gimmicks
By Nortel on 1/6/2014 9:44:58 PM , Rating: 3
So I guess we just throw away the industry standard sRGB/rec.709 color gamut? Are industries going to start standardizing DCI-P3 or Adobe RGB for broadcast or film releases? Hell no, lets just pump out a 'technology' that turns up the brightness, saturation and vibrancy in post and call it a day.

Death to the 'CIE color chart'? Accuracy is for fools apparently.




RE: Dolby and their gimmicks
By Reclaimer77 on 1/6/2014 9:54:03 PM , Rating: 2
So when I read 4,000 nits and "liquid cooled", I'm picturing some horribly inefficient power hog of a TV. Move over Energy Star rating lol.


RE: Dolby and their gimmicks
By Solandri on 1/7/2014 2:41:09 AM , Rating: 4
I don't think this is meant for a consumer TV. I think it's meant as a reference standard. They're saying that current references are based on ancient display technologies which couldn't get very bright. They came up with a new reference which although needs ludicrous equipment today, should serve as a good reference for brightness and gamut well into the future.

I just want those RGB LEDs in regular TVs and monitors...


RE: Dolby and their gimmicks
By Dorkyman on 1/7/2014 1:07:02 PM , Rating: 1
Hey, Dolby, what a load of horse manure. Wow, you've re-invented TV.

I'm sure consumers are just frothing at the bit to buy a display that requires the use of sunglasses for beach or snow scenes, just like in real life.


RE: Dolby and their gimmicks
By RapidDissent on 1/7/2014 2:38:50 PM , Rating: 2
This is a top to bottom solution, just like Dolby Surround...
quote:
TV manufacturers can offer consumers a dramatically improved video experience

Also, note the partnerships with Netflix, Vudu, Xbox Video, etc. These are to provide the customer with the content which will take advantage of their system.


RE: Dolby and their gimmicks
By Alexvrb on 1/7/2014 11:43:28 PM , Rating: 2
Solandri was replying to the post talking about the 4000 nit liquid-cooled reference "TV". He was pointing out THAT particular display wasn't intended for the consumer.

He clearly wasn't saying that the "Dolby Vision" program didn't have elements that covered the consumer-facing products.


RE: Dolby and their gimmicks
By DallasGreenie on 1/7/2014 5:22:35 PM , Rating: 2
This Dolby proposal is just silliness designed to support a flagging stock and company in disarray. Dolby doesn't build anything anymore, their only income is from licensing - in many cases licensing technology that can be replaced by open-source solutions. This "brightness" increase has come from a company called Brightstar. Dolby's track record at packaging and marketing outside technologies has been very poor - witness DVD-Audio, a technology developed by Meridian.

The elephant in the room? Dolby can't suspend the laws of physics. A 4000 nit brightness television will use over 30 times the electricity of a standard TV! Governments around the world have spent decades getting televisions, huge electricity users, into low power usage. In one step Dolby proposes a technology that will require construction of new power plants around the world?

With so many of Dolby's technologies built on "data reduction", they're being "Moore's Law'd" out of existence.

Never gonna happen.


RE: Dolby and their gimmicks
By Reclaimer77 on 1/7/2014 10:06:17 PM , Rating: 1
quote:
A 4000 nit brightness television will use over 30 times the electricity of a standard TV!


That's what I was thinking.

Not that I'm one of these energy Nazi's mind you, but this technology would make a pretty significant dent in your electricity budget. And I'm not sure the gains would be worth it.

quote:
In one step Dolby proposes a technology that will require construction of new power plants around the world?


LOL now that's progress, right!?


RE: Dolby and their gimmicks
By Alexvrb on 1/7/2014 11:52:43 PM , Rating: 3
They're not saying put these 4000 nit power monsters in every home. They're putting these units into the hands of content creators, who use them as reference 4000 nit displays. As opposed to a reference 100 nit unit. In no way does this imply that you're going to be running displays in your home that are nearly an order of magnitude brighter any time soon.


RE: Dolby and their gimmicks
By Reclaimer77 on 1/8/2014 12:26:03 PM , Rating: 2
Dolby is using the word "consumer". If they don't intend this technology to be used in the living room, they need to be more clear. Because right now they are speaking of this as a consumer device.


RE: Dolby and their gimmicks
By cmdrdredd on 1/7/2014 12:09:42 AM , Rating: 3
I guess since they are getting pretty much stomped by DTS and pushed out of the Home Theater market due to most Blu-Ray releases defaulting to DTS-HD MA, they want to try to force a new proprietary standard for video. Honestly without support from Sony and Sony Pictures/Sony Professional, as well as Samsung and LG (aren't they they two biggest TV makers in the world?) I don't think it will get far. It sounds nice but I don't see how making an image brighter makes it more realistic.


RE: Dolby and their gimmicks
By integr8d on 1/7/2014 12:21:20 AM , Rating: 2
I think you mean XYZ, as P3 is an old film emulation gamut and DCI has specified XYZ for all DCP mastering. I don't know why you mentioned Adobe, as they have nothing to do with the video space.

Where this makes sense is in file-based or streaming content. There's nothing to keep Netflix from offering up two different versions of the same flick. Just set a preference and flag the content so that the tv knows which space to use.

It's too bad that this didn't happen before, as most LCDs and, I'd gather, plasmas support Deep Color and xvycc. I really wanted to see that happen.

Personally, I think that 100 nits is plenty bright, given the large sizes of most people's tv's.


RE: Dolby and their gimmicks
By blue_urban_sky on 1/7/2014 4:50:08 AM , Rating: 2
100 nits seem to be the peek positive value (range). In the article it states that many TVs have this set to around 400 nits. I think and I could be very wrong that if you had a picture (like they do) of someone with the sun behind then in the old system the dark area would be at 300nits and the sun behind would be at 400nits giving a range of 100 nits. What they seem to be doing is to have the person in the foreground at 300 nits and the sun at 4300nits.

Im guessing this greatly extends the colour range as a result.


RE: Dolby and their gimmicks
By tastyratz on 1/7/2014 10:57:18 AM , Rating: 2
The problem here is that it does nothing to expand the color gamut. We are still limited by the HDMI "deep color" standard of 0-255 definition. spreading out the peak only reduces the gradients leaving it blocky, and if you want to rewrite the range you need to revisit the signal standard. Good luck there.

Even still, without rgb backlighting you cant just create contrast that isn't there. Current tv standards just don't have the contrast range and is one reason why limiting to 100 nits actually betters the picture. If the RGB backlight isn't per pixel there will be a lot of messy bleed and akward image detail. Since that king of brightness would wash out the lcd we would be limited to the actual RGB pixel for our image... and then it's just an LED tv.


RE: Dolby and their gimmicks
By jzed on 1/7/2014 5:11:23 PM , Rating: 2
Actually HDMI 1.3 supports a color depth deeper than 8 bit today. From the HDMI 1.3 FAQ:
quote:
HDMI 1.3 supports 10-bit, 12-bit and 16-bit (RGB or YCbCr) color depths, up from the 8-bit depths in previous versions of the HDMI specification.
quote:
HDMI 1.3 adds support for “x.v.Color™” (which is the consumer name describing the IEC 61966-2-4 xvYCC color standard), which removes current color space limitations and enables the display of any color viewable by the human eye.
http://www.hdmi.org/learningcenter/faq.aspx


4k is dead !
By BernardP on 1/6/2014 9:22:21 PM , Rating: 1
Liquid-cooled Dolby displays will soon make 4k obsolete.




RE: 4k is dead !
By stm1185 on 1/6/2014 9:42:20 PM , Rating: 3
Because you cant make a 4k version with Dolby. Clearly that is impossible. The technology only works with 1080p...


Worthless
By inperfectdarkness on 1/7/2014 12:28:54 AM , Rating: 2
There's a reason I wear sunglasses when outdoors at "high noon". Why in god's name would I want to wear sunglasses while watching TV? I don't need a million nit's, thank you very much. I really don't even need 4,000 of them.




By Selenium_Glow on 1/7/2014 1:18:08 AM , Rating: 2
How is this better than OLED? I mean, OLEDs have RGB (emmiter based) pixels and if you use the larger pixels as there are on TV, they can go very very very bright.

I understand there is a burn in problem with this, but what other points does this become better. I'm sure there is a lot of information I am missing here or I just don't know about.




Don't understand...
By HoosierEngineer5 on 1/7/2014 8:56:40 AM , Rating: 2
How does this differ from 'torch mode' most TVs are set to display anyway?




Can't wait
By gppinky on 1/7/2014 10:55:06 AM , Rating: 2
TV shows the image as linear instead of exponential as the eye actually sees it. Linear is “good enough” for neutral brightness images, but it fails to show bright and dark images at the same time with both having good detail. The white will be washed out, or the black will lack detail. You can clearly see that when you try to take a photo with shadows and a bright sky. You have to change the brightness to focus on the on which one of the two you want details on, but you can’t have it on both. You can use a “cheat” named Dynamic Range which will reduce the brightness on bright areas and increase the brightness on dark areas, but it has limitations.

With an exponential scale it will be able to capture and show details on dark objects while still showing bright images without being washed out. If implemented correctly this will make a big difference in picture quality.

They also want to push up the brightness so that a bright sky actually is showing a bright sky. I don’t want to watch TV with sunglasses on, so I will pass on this feature.




So I guess you could say...
By espaghetti on 1/7/2014 1:12:33 PM , Rating: 2
This is a nit-wit idea
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Yeaaaaaaahhhhhhhhhh




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