Thursday, April 24, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Facebook Enjoys High First-quarter Revenue
Qualcomm Reports Less Than Expected 2Q Revenue
iPhone Sales Drive Apple's Record March Quarter Revenue
Travelling Through Time On Updated Google Maps
OnePlus One To Launch Next Month
LG Display Reports First Quarter Results
Toshiba Announces Canvio AeroMobile Wireless SSD
Global Chip Revenue Rises in 2013
Active Discussions
help questions structure DVDR
Made video, won't play back easily
Questions durability monitor LCD
Questions fungus CD/DVD Media, Some expert engineer in optical media can help me?
CD, DVD and Blu-ray burning for Android in development
IBM supercharges Power servers with graphics chips
Werner Vogels: four cloud computing trends for 2014
Video editing software.
 Home > News > Optical Storage > Toshiba...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, May 15, 2003
Toshiba's new Dual-layer, single-sided, Blue-Laser Rewritable Optical Disk needs only current production facilities


Tokyo-Toshiba Corporation today announced that it has developed a working prototype of a high capacity dual-layer, single-sided, blue-laser rewritable optical disk. The new disk enjoys key advantages in that it can easily be brought to mass production with only minimal adjustments to current DVD production facilities, and that its current capacity can be increased significantly. The new disk is also expected to promote lower production costs for next generation optical disks, while offering simple implementation of backward compatibility with today's generation of DVD formats.

Details of the new disk and its technology will be presented at Optical Data Storage 2003, to be held from May 11 to 14 at the Hyatt Regency of Vancouver, BC Canada.

The market is starting to move toward next generation DVD format compatible with high definition TVs and the ever-increasing capacity of broadband networks. The DVD Forum, the 215-company strong international association of hardware manufacturers and content providers, is taking the lead in defining such formats.

In August 2002, Toshiba and NEC jointly proposed to the Forum a format for a next generation high-definition system based on a high-capacity, blue-laser DVD. This is now under discussion. That format covers a 15GB single-layer, single-sided read-only disk, a 30GB dual-layer, single-sided, read-only disk, and a 20GB single-layer, single-sided read-and-write disk. These capacities significantly improve on the 8.5GB capacity of current dual-layer, single-sided read-only DVD disks and 4.7GB single-layer, single- sided read-and-write DVD disks.

The proposed format utilizes a short wavelength blue laser and the same disk structure used in current DVDs-back-to-back bonding of two 0.6mm thick, 120mm disks. This approach not only supports continued use of today's DVD disk manufacturing equipment, it also delivers higher production yields than alternative disk structures based on stacked disks. Toshiba-NEC format also employs an objective lens with a numerical aperture of 0.65, very close to that of current DVD.

Since proposing the format, Toshiba has continued development work and has now achieved and demonstrated the practicality of a high capacity 36GB dual-layer, single-sided read-and-write disk that can be applied to both consumer electronic and computer applications.

Toshiba's new high-capacity dual layer disk employs Germanium-Tellurium-rich Germanium-Antimony-Tellurium-Bismuth (GeSbTeBi) alloy recording layers that support improved signal processing and erasability. The disk's dual-layer structure has a high level of manufacturability and a capacity that can be pushed to higher levels.

In summing up the advantages of the new disk, Toshiba noted pluses in the manufacturing process from maximizing similarities with current DVD. The working prototype allows use of the same manufacturing infrastructure as current DVD, supporting manufacturers' by limiting the need for new investments, while also minimizing disk production costs and delivering high yields. The new disk also assures backward compatibility with current CDs and DVDs, and supports fabrication of disks that do not need a cartridge-an essential feature for slim drives that can be integrated into portable equipment.

Toshiba will present the disk technology at Optical Data Storage 2003 at 9:45 on May 13. The company will propose the dual-layer format to the DVD Forum in the latter half of this year.


Previous
Next
SARS to influence the CD media demand        All News        SARS to influence the CD media demand
SARS to influence the CD media demand     Optical Storage News      SARS to influence the CD media demand

Get RSS feed Easy Print E-Mail this Message

Related News
Toshiba Announces Canvio AeroMobile Wireless SSD
Toshiba, SanDisk Mass Produce 15nm NAND flash Memory
Toshiba Joins GLOBALSOLUTIONS Ecosystem
Toshiba Debuts World's Fastest microSD Memory Cards
Toshiba 4K Ultra HD Laptop Retails For $1500
Toshiba to Launch 40-inch 4K TV
Toshiba Introduces Its own Application Processor For Wearables
Toshiba Launches Interface Bridge ICs that Supports SeeQVault Content Security Technology
Toshiba Self-encrypting HDD Meets Government-class Security Requirements
Toshiba Canvio Wireless Adapter Transforms External Hard Drives Into NAS Devices
Toshiba To Ship New 4K Laptops Later This Year
Toshiba Develops Medical Breath Analyzer

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .