Saturday, November 22, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung Files ITC Complaint Against Nvidia
Europe To Ask Google Unlink Its Commercial And Search Services
Streaming TV Service Aereo Files for Bankruptcy
Square Launches Cash Register Service
Call of Duty: Advanced Warfare is the Biggest Entertainment Launch of 2014
Intel-Micron 3D NAND To Have 32 Layers, 256Gb Per Die
Intel To Release Chromecast-like Thumb-sized PCs
Google Contributor Lets You Pay And And See No Ads In Your Favorite Sites
Active Discussions
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
Copied dvd's say blank in computer only
Made video, won't play back easily
New Features In Firefox 33
updated tests for dvd and cd burners
How to generate lots of different CDs quickly
 Home > News > Optical Storage > Matsush...
Last 7 Days News : SU MO TU WE TH FR SA All News

Wednesday, May 22, 2002
Matsushita, Canon develop compact 3GB Disc, smaller than MD!


Matsushita Electric Industrial Co., Ltd. and Canon Inc. have jointly developed a high-density 2-in. optical magneto disc with an improved recording capacity of 3GB per disc.

Its recording capacity enables about an hour of recording MPEG-2 coded moving pictures with the encoding speed of 6Mbps. Matsushita and Canon expect the disc to be used mainly for video cameras.

They have improved the data transmission rate to 24Mbps, and the disc's intermittent processing recording/playing helps lower the power dissipation.

As for the optical system, they have applied the red semiconductor laser with the wavelength of around 650nm and the numerical aperture (NA) 0.6 objective lens, which have been popular for current DVDs. They have realized the high-density recording per unit area to the level of around 15Gb/inch2 by combining the optical system with the domain wall displacement detection (DWDD) technology. High-density recording based on this technology is closing in on the next-generation optical disc standard "Blue-ray Disc," which uses a blue-violet laser with the wavelength of 405nm and an objective lens of NA 0.85. For comparison, areal density is 18Gb/inch2 for a 12cm-diameter 25GB media.

The disc structure including a hub in the center is similar to that of the current MD and is housed in a cartridge with a shutter. The disc substrate is 0.6mm thick, and records in grooves. Its track pitch is 540nm, and it has a bit recording length of 80nm.

The technologies used for this disc are already close to a practical level. According to both companies, evaluations for various specifications have met the criteria they set, including power margin, tilt margin, focusing and tracking error margins. Matsushita and Canon have succeeded in realizing the magnetic wall displacement during playing by selectively annealing only the areas adjacent to the grooves. As concerns the annealing process, they applied a blue-violet laser light focused by an NA 0.85 lens.


Previous
Next
Taiwan develops develop 100GB optical disc        All News        Taiwan develops develop 100GB optical disc
Taiwan develops develop 100GB optical disc     Optical Storage News      Taiwan develops develop 100GB optical disc

Get RSS feed Easy Print E-Mail this Message

Related News
Toshiba Mobile Display Introduces New LCD Panels With Wide Viewing Angle Technology for Mobile Devices
TMD Develops a 7-inch LTPS TFT LCD panel With Integrated in-cell Touch Panel Technology
Toshiba Develops OCB Liquid Crystal Panel for 3D Glasses
Toshiba Develops 21-inch Autostereoscopic High-definition Display
Eight New Industrial LED Backlight LCD Panels With 100,000 Hour MTBF from Toshiba Mobile Display
Sony Showcases 21-inch OLED, 3D LCD Prototypes at Display 2009
Toshiba and Panasonic Agree on LCD Joint Venture Transfer
Toshiba Matsushita Display Technology Previews Integration of High Resolution 3D Capabilities Into Hanlheld Devices
Hitachi to Buy Matsushita Plasma TV Parts
New Small-Molecule OLED Display Panel Achieves a Lifetime of 60K Hours
Toshiba Matsushita Display Technology Invests In OLED Displays For Mobile Devices
Matsushita Shareholders Approve Name Change to "Panasonic Corporation"

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 .