Friday, July 31, 2015
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
NVIDIA Recalls SHIELD Tablets Due To Battery Issues
Firefox Attacks Microsoft Over Default Browser in Windows 10
Sharp to Exit Americas TV Market
Researchers Showcase Javascript-based Attack On a Computer's DRAM
Hackers Used Twitter hashtags To Extract Data From Compromised Networks
Facebook Unveils New Security Checkup Tool
Court of Appeals Rejects Google's Move To Overturn Microsoft's Patent Royalty Victory
Toshiba Expands Lineup of Phase Detection Auto-Focus-equipped CMOS Image Sensors for Smartphones
Active Discussions
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
How to burn a backup copy of The Frozen Throne
Help make DVDInfoPro better with dvdinfomantis!!!
Copied dvd's say blank in computer only
menu making
Optiarc AD-7260S review
 Home > News > Optical Storage > Pioneer...
Last 7 Days News : SU MO TU WE TH FR SA All News

Monday, October 25, 1999
Pioneer taps violet laser for 27.4-Gbyte DVD system


"..Pioneer has demonstrated a 27.4-Gbyte optical disk system that can store four hours of high-definition video. The system uses a 405-nm violet laser developed by.
With all work on formats for first-generation DVD products scheduled for completion by year's end, Pioneer is shifting its development focus to next-generation DVD products and hopes to leverage Nichia's newly available violet laser.
The prototype disk system, which can store four hours of high-definition video in 1,080i at variable bit rate at an average 13.4 Mbits/second, was shown at the Japan Electronics Show 1999 earlier this month. Pioneer intends to propose the system as the specs for the next-generation DVD-video system.
The desktop prototype player with the violet laser reads out signals from each layer of a two-layer disk the same structure as today's double-layered DVD-video disk with an 8.54-Gbyte capacity. The prototype disk has a track pitch of 0.37 micron, about half of the current disk, and a capacity of 27.4 Gbytes for two layers.

Triple beam
Since the track pitch is narrower even for the blue laser beam spot, Pioneer researchers used three-beam crosstalk cancellation. That technology divides the beam into three, with the outer two beams canceling interference from adjacent tracks while the central beam conveys the signal from the targeted track.
Pioneer demonstrated a 15-Gbyte disk system in 1997 using a 430-nm second-harmonic-generation laser. At that time, the numeric aperture ratio was 0.5, but since the violet laser has a shorter wavelength, Miyanabe said, aperture could be kept at 0.6, the same as current DVD players.
In the demonstration, Pioneer played back 1,080i high-definition moving pictures from the disk. For authoring, each frame is divided into four portions, encoded, then put together. But decoding is done by one decoder supplied by LG Semiconductor. Pioneer has high-resolution disk mastering technology, which originated in a semiconductor process technology called "contrast enhanced lithography.".."



Previous
Next
Cnet posted Buyer's Guide to Storage        All News        Cnet posted Buyer's Guide to Storage
Cnet posted Buyer's Guide to Storage     Optical Storage News      Cnet posted Buyer's Guide to Storage

Source Link Get RSS feed Easy Print E-Mail this Message

Related News
Pioneer Launches In-Car Rearview Mirror Telematics Unit
Pioneer Intros New BDR-XS06JL BDXL Burner
New Pioneer Home Theater Receivers Feature Dolby Atmos
Pioneer Brings Android Auto and Apple Carplay Your Car
Pioneer Competes transfer Of DJ, Home Electronics and Headphones Businesses
Pioneer Goes Retro With The New PL-30 Turntable
Pioneer HDJ-2000MK2 Headphones Target Pros
Pioneer DJ Unveils New Professional Studio Headphones
Pioneer XDJ-RX Rekordbox DJ System Comes With a Built-in Screen
Pioneer Releases Solid-state Drive
New Pioneer BDR-S09J-X BD Is Optimized For Audio Playback
Pioneer at CES 2015

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2015 - All rights reserved -
Privacy policy - Contact Us .