Feeds

Boffins invent 42GB DVD

A disc capacity to rival Blu-ray?

Securing Web Applications Made Simple and Scalable

Blank DVDs are a cheaper storage option than Blu-ray, but the HD format has greater capacity. However, Japanese storage scientists claim to have invented a method for storing up to 42GB onto a single DVD.

Researchers from the Institute of Multidisciplinary Research for Advanced Materials, based in Japan’s Tohoku University, have – according to Google’s translation of a document released by the university department – discovered a way to multiply the amount of data stored on a DVD. The group also claims to be able to replicate the method for CDs.

Essentially, the team states that by changing the shape of the data-storage pits from having a flat bottom to one that's a V shape, each pit will be able to hold more data. Changing the horizontal orientation of the tip of the valley, alters the way light is reflected by the pit. As a result, pits no longer represent binary 1s and 0s, but a range of values, effectively allowing each to record a byte rather than a bit.

The V-shape pits in action

The upshot: individual discs could hold up to 42GB of data.

But before you go running off to the stationery store, it’s worth noting that the technology is essentially useless. That’s because current DVD machines aren’t designed to write or read disc data in such a way, so you'll need new hardware. And if you're buying new kit, why not get a Blu-ray drive and be done with it?

Dual-layer Blu-ray Discs, although expensive, can already hold 50GB of data. And one retailer’s already punting a Blu-ray disc that it’s claimed will retain 25GB of data for up to 200 years.

So, whilst the Tohoku University researchers' idea may hold some merit, it’s probably a case of too little, too late. Unless they adapt it for blue-laser discs, of course...

Application security programs and practises

More from The Register

next story
iPad? More like iFAD: We reveal why Apple fell into IBM's arms
But never fear fanbois, you're still lapping up iPhones, Macs
For Lenovo US, 8-inch Windows tablets are DEAD – long live 8-inch Windows tablets
Reports it's killing off smaller slabs are greatly exaggerated
Microsoft unsheathes cheap Android-killer: Behold, the Lumia 530
Say it with us: I'm King of the Landfill-ill-ill-ill
Cheer up, Nokia fans. It can start making mobes again in 18 months
The real winner of the Nokia sale is *drumroll* ... Nokia
Seventh-gen SPARC silicon will accelerate Oracle databases
Uncle Larry's mutually-optimised stack to become clearer in August
EU dons gloves, pokes Google's deals with Android mobe makers
El Reg cops a squint at investigatory letters
Apple orders huge MOUNTAIN of 80 MILLION 'Air' iPhone 6s
Bigger, harder trouser bulges foretold for fanbois
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.