Pioneer develops 400GB optical disc

Pioneer has developed an optical disc that can hold up to 400G bytes of data easily surpassing previously announced prototypes.

Pioneer has developed an optical disc that can hold up to 400G bytes of data easily surpassing previously announced prototypes.

The new disc manages to pack 16 layers, each with a 25G-byte capacity, into a conventional 12-centimeter diameter optical disc. The new discs are similar to Blu-ray Disc technology and slight changes to the hardware on a Blu-ray drive would allow the new Pioneer discs to be used on one.

Pioneer doesn't have any plans to commercially produce the disc but is looking to work with disc manufacturers who would make it themselves. The technology is about ready to enter commercialization, said Michiko Kadoi, a spokeswoman for Pioneer in Tokyo.

A one-sided Blu-rayDisc has 25G bytes of capacity, far less than the Pioneer disc.

Currently dual-layer 50G byte discs are the highest capacity discs available commercially. Various companies have worked on higher capacity discs and TDK previously announced development of a 6-layer disc with 150G byte capacity but that has yet to reach the market.

Getting a clear signal from each recording layer has been a stumbling block for higher capacity discs with more layers, but Pioneer says it has managed to solve this problem by employing technology it developed for DVDs. The new disc has a structure that reduces interference from adjacent layers and so accurate playback is possible from all 16 layers, the company said.

The initial prototype is a read-only disc but the same technology is also applicable to recordable discs.

A current 50G byte Blu-ray Disc can store about 6 hours of digital high-definition TV so the higher capacity discs, if commercialized, would be able to expand this to 48 hours.

Pioneer plans to detail the technology at the International Symposium on Optical Memory and Optical Data Storage 2008 that will be held in Hawaii from July 13.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Martyn Williams

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Tom Pope

Dynabook Portégé X30L-G

Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.

Tom Sellers

MSI P65

This smart laptop was enjoyable to use and great to work on – creating content was super simple.

Lolita Wang

MSI GT76

It really doesn’t get more “gaming laptop” than this.

Jack Jeffries

MSI GS75

As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.

Taylor Carr

MSI PS63

The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Featured Content

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?