Blu-Ray Disc Association working on 4k UHD standard for Blu-Ray

[mike123abc]

http://www.twice.com/magazine-issue...sc-association-4k-ultra-hd-blu-ray-way/109597

Not much in the way of details of specs, but encouraging signs that they may have deep color and improved gamma in the 4k UHD specs.

This means not just looking at delivering the requisite number of pixels, but at the range of features that contribute to the overall consumer experience – factors such as high dynamic range, bit depth, color gamut, content protection and mobility and digital bridge opportunities that encourage content ownership and collection and enable flexible enjoyment of that content in mobile environments. We're looking at the entire range and will be prepared to talk about those features as the specification approaches completion.

 

[jevans64]

It is hard enough to make a dual-layer BD. 4k would require at least a 4-layer disc. The BD manufacturing process is a nightmare compared to DVD and the now-defunct HD-DVD. Even the newly-announced Singulus BluLine III will only be able to place three layers. The link shows the BluLine II, which does one or two layers, and is complicated enough. There are 4 points where contamination is an issue at the spin-bowls. Imagine adding another embosser and the associated coating and curing station. I'd be surprised if the pass-rate gets above 40% for the BluLine III.

http://www.singulus.com/en/optical-disc/replication-lines/bluline-ii-main-components.html

 

[mike123abc]

They sell 4 layer BDXL burners and media (although the media is $50 on Amazon) already, with HEVC and 100GB they could go a long way with 4k....