Tuesday, May 24, 2016
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung, LG to Unveil Their Display Technologies at SID 2016
Sony Sees Flat Annual Growth Due To Recent Quake Damages
Microsoft To Accelerate Delivery of Affordable Internet Access
Facebook Changes Policies On 'Trending Topics'
Kingston Starts Shipping New UV400 SSD
AMD Notebook Market Share Increased From Last Quarter, Nvidia Overall Share Increased From Last Year
MSI To Showcase VR-ready Laptop, Gaming Desktops And More At Computex
GLOBALFOUNDRIES Releases 130nm SiGe RF Technology For Wireless Network Communications
Active Discussions
Which of these DVD media are the best, most durable?
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
Help make DVDInfoPro better with dvdinfomantis!!!
menu making
Optiarc AD-7260S review
cdrw trouble
 Home > News > Optical Storage > Toshiba...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, October 02, 2003
Toshiba progress on Blue-laser


Toshiba will demonstrate its blue-laser-based storage technology at Tokyo's giant Ceatec exhibition held at Makuhari Messe, Chiba prefecture, from October 7-11.

The company will show a prototype blue-laser diode for optical disc systems. It is expected to hit the market around 2006. The new technology is several times more powerful than current commercial models, and has what Toshiba claims is the lowest noise of any such laser diode yet developed.

Lasers are used in optical disc systems to read and write information to the disc. The wavelength of the light produced by the laser is one of the main factors in determining the amount of data that can be stored on a disc. The shorter the wavelength, the smaller the light spot made on the disc surface and so less space is required to store one bit of information and more can be stored on a disc.

Almost all current optical disc systems, including CD and DVD, use lasers that emit light in the red or infrared spectrum. The CD system holds around 650MB of data and uses a 780-nanometer wavelength laser while the 4.7GB DVD format uses a laser with a wavelength of around 640 nanometers.

As storage technology moves onward, manufacturers are working with blue and blue-violet laser systems. Both Sony's Blu-ray system and Toshiba and NEC's proposed Advanced Optical Disc system use lasers with a wavelength around 405 nanometers, achieving storage capacities of between 23GB and 36GB per disc.

Toshiba's new laser has a similar wavelength, so it won't help improve on data density – but its high output power and low noise will enable reading and writing to take place at higher speed than the basic version of the systems. In current CD and DVD systems, more-powerful lasers have helped engineers do exactly the same thing, so higher speed drives, such as 4x or 12x or 24x models, are now available.

Main Specifications

Max. Optical Output: 200mW (Continuos wave mode at 25 degrees C)
Relative Intensity Noise: -132 dB/Hz (at 3mW)
Laser Wavelength: 409 nanometer
Threshold Current: 35 mA
Operation Current: 164 mA
Beam Angle (parallel): 12.4 degree
Beam Angle (perpendicular): 25.8 degree
Max. Operational Case Temperature: 100 degrees C

Toshiba expects faster versions of blue laser systems will be on the market around 2006, said Makoto Yasuda, a spokesman for Toshiba.


Previous
Next
Toshiba Singapore has announced the addition of two new Portégé models to its range of ultraportables family        All News        DesignTechnica reviews Plextor PX-708A
DesignTechnica reviews Plextor PX-708A     Optical Storage News      DesignTechnica reviews Plextor PX-708A

Get RSS feed Easy Print E-Mail this Message

Related News
Fujitsu, Vaio, Toshiba, Abandon PC Merger Plans
New Toshiba Q300 And Q300 Pro Family Of SSDs Launch With 15nm TLC Flash Memory
Toshiba Recalls Laptop Computer Battery Packs Due to Burn and Fire Hazards
Toshiba Invests In New Memory Fabrication Facility, Sells 5.9 billion Assets And its Home Appliance Business
Canon to Buy Toshiba Medical For About $6bn
Toshiba HK4 Series SSDs Now Available
Toshiba Cancels Launch of Wearvue TG-1 Wearable Device
Toshiba's New SG5 TLC SSDs Are Optimized For notebooks And Desktops
Toshiba Dismisses PC Production Withdrawal Reports
Toshiba To Wind Down Its Hard Disk Business
Toshiba Develops STT-MRAM Magnetic Cache Memory, Wireless Receiver For Bluetooth Low Energy
Toshiba To Focus On Memory Chips, Phase Out Hard Disk Manufacturing

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2016 - All rights reserved -
Privacy policy - Contact Us .