New standard could pave way for higher capacity Blu-ray discs

Engadget:

"Already feeling the pinch of a mere 25GB per layer on a Blu-ray disc? Neither are we, but it looks like Sony and Panasonic have been busily working on ways to boost capacity nonetheless, and they've now devised a new method that seems to be on the fast track to becoming a standard."

[RedDragan]

This stuff is old.

I posted the following on the Playstation forums in November and TDK did the 33GB layers way back in 2006 and that has 6 layers!

The 1TB BD disc was announced as in developement last year!

http://community.eu.playsta...

I got this information from Wiki. Engadget needs to catch up on the news, it is severely out of touch with Blu-Ray.

[Elven6]

There are many ways to get multiple layers onto a disc, various companies are looking at ways to make the technique more efficient both performance and cost wise, you can increase the layers on a disc but you lose out on something as well, I forgot what it was though, anyone fill me in?

I think the ultimate goal for these companies would be to create a higher capacity disc that is backwards compatible, at least to a certain extent with existing players.

[LostDjinn]

what the article is explaining (badly) is that a current 25 gig disk will have it's capacity increased to just over 33 gig using this index. It's not a new type of disk being released. That's why a firmware update will allow for its use instead of a new BD player.

Elven6, in order to increase layers on the disk, each layer needs to be more transparent than the last as blue light is prone to diffusion.

[UltimateIdiot911]

You're missing the point. If you read the article, you would know what the issue was and why it took until now to become a standard.

From the source: The problem until now has been there was no evaluation technology appropriate for 33.4 GB media using PRML. PRML assumes inter-symbol interference, which makes it difficult to base optical disc quality evaluation on jitter, as is widely done now for Blu-ray and many other optical discs. A source at Sony Corp. states, "At high-density recording, such as 33.4 GB, the relationship between the error rate and jitter collapses, and it becomes extremely difficult to evaluate jitter."