Rumor: Blu-ray disc to pack 100GB in triple layers, enough for 4k res - AVS Forum
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post #1 of 14 Old 09-12-2013, 08:40 AM - Thread Starter
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Per techcrunch

http://www.techradar.com/news/home-cinema/next-gen-4k-blu-ray-discs-outed-by-manufacturer-before-official-reveal-1180491
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Techcrunch.com
The Blu-ray Disc Association has yet to officially announce the arrival of 4K Blu-ray discs, but a manufacturer has revealed they are already being made.

In the same week that the BDA told TechRadar that an announcement on 4K Blu-ray was imminent, disc creator Singulus has revealed on its website that it is one company that is "provides the machine technology for three-layer Blu-ray Discs with a storage volume of about 100GB."

The machine in question is called the BLULINE III and confirms that we won't be looking at another format war when it comes to bringing 4K content to the home.

100GB is capacious enough to house a 4K movie, the only question that remains is whether current Blu-ray players will be able to play the discs, presumably with some sort of firmware update to read and playback the content.

Do NOT let the magic smoke out because it is impossible to put the magic smoke back in!!!!
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post #2 of 14 Old 09-12-2013, 09:10 AM
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100GB discs point to 4K Blu-ray

http://reviews.cnet.com/8301-33199_7-57602583-221/100gb-discs-point-to-4k-blu-ray/
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post #3 of 14 Old 09-12-2013, 09:58 AM
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post #4 of 14 Old 09-12-2013, 03:02 PM
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If the movies are not over-priced and the players are reasonably priced, it makes sense to buy UltraHD Blu-ray's instead of 1080p Blu-ray's even if you don't have any plans to get an UltraHD display/projector. The added bit rate and resolution would look beautiful in 1080p and later you could unlock the additional resolution by upgrading your display.
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post #5 of 14 Old 09-12-2013, 06:08 PM
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As always I will believe it when I see it, I do think it will happen one day thou. 100Gb seems rather tight for UHD.
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post #6 of 14 Old 09-13-2013, 02:13 PM
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Quote:
From the link:
Quote:
With the realization of a new data compression method for the ultra-high definition technology, the storage volume per disc layer can be increased from 25 GB to 33 GB, resulting to a total capacity of 100GB per disc.
Is this a play on words? How can data compression increase storage volume?confused.gif Data compression can increase storage capacity but not not the area used. 25GB + 25GB +25GB = 75 GB. Compression can fit 100GB into the 3 layer volume area. Clarification definitely needed.confused.gif
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post #7 of 14 Old 09-13-2013, 04:14 PM
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Quote:
Originally Posted by Paul H View Post

Clarification definitely needed.confused.gif

I agree. I took it to mean that using H.265 would produce the same job as H.264 would with 100GB. OTOH, they may be actually using some kind of data compression (not data reduction, as in H.262, H.264, H.265) scheme for the data on the disc. Hopefully, there will be clarifications forthcoming.
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post #8 of 14 Old 09-13-2013, 08:35 PM
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If the 4K version of Blu-ray can support 100 GB discs that would be good news.

Quote:
Originally Posted by Paul H View Post

Is this a play on words? How can data compression increase storage volume?confused.gif Data compression can increase storage capacity but not not the area used. 25GB + 25GB +25GB = 75 GB. Compression can fit 100GB into the 3 layer volume area. Clarification definitely needed.confused.gif
To put 33 GB of data per layer on a Blu-ray requires more pits of data on a track (the width of the track does not change but the number of times that the laser reads/writes increases in frequency). To use a metaphor imagine that a bunch of cars were lined up on a street. The number of cars you can fit on that street would increase if the cars were not as long.
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post #9 of 14 Old 09-14-2013, 05:23 AM
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Originally Posted by Richard Paul View Post

The number of cars you can fit on that street would increase if the cars were not as long.

I believe that would require a shorter wavelength laser. It appears violet laser diodes are readily available.
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post #10 of 14 Old 09-14-2013, 09:27 AM
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Originally Posted by Wendell R. Breland View Post

I believe that would require a shorter wavelength laser.
It is possible to only increase linear density and that is how the BDXL format was made. Here is a link to a Blu-ray paper that has a section on BDXL and explains how it was possible to increase the per layer capacity. The minimum mark length for the laser is reduced from 149 nm to 112 nm and the signal method is changed from ISI to i-MLSE.
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post #11 of 14 Old 09-15-2013, 06:17 AM
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Quote:
Originally Posted by Richard Paul View Post

Here is a link to a Blu-ray paper that has a section on BDXL[/URL] and explains how it was possible to increase the per layer capacity.

Thanks Richard for the info and link. That info and link would be a good addition to the sticky "HiDef DVD News VII".
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post #12 of 14 Old 09-22-2013, 03:19 PM
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Quote:
Originally Posted by Wendell R. Breland View Post

Thanks Richard for the info and link. That info and link would be a good addition to the sticky "HiDef DVD News VII".
I think it would be useful to have a news thread specifically about the 4K version of Blu-ray.
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post #13 of 14 Old 10-12-2013, 07:04 AM
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Quote:
Originally Posted by wuther View Post

100Gb seems rather tight for UHD.

Yes it does.
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post #14 of 14 Old 10-14-2013, 09:28 AM
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Quote:
Originally Posted by wuther View Post

100Gb seems rather tight for UHD.

Sony states their 4K movie files range 45 to 60 GB. They are using H.264 for data reduction. IMO, the BDA will go with H.265 and 100 GB for UHD Blu-ray. For shorter movies I would not be surprised to see them on 50 GB BD.
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