Sunday, December 21, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung Introduces SE790C Curved Monitor
Chinese Motion-sensing VR Glasses Coming On Kickstarter
Kodak Returns To CES With Consumer Product Line
North Korea Suggests Joint Inverstigation With U.S. Over Sony Hacking
T-Mobile to Pay $90 Million To Settle Case With FCC
New Trojan Targetted Banks Wordlwide
FBI Confirms North Korea Was Behind Sony Hack
Apple Responds To BBC's Allegations Over Working Conditions In Chinese Factory
Active Discussions
Digital Audio Extraction and Plextools
Will there be any trade in scheme for the coming PSP Go?
Hello, Glad to be Aboard!!!
Best optical drive for ripping CD's? My LG 4163B is mediocre.
Hi All!
cdrw trouble
CDR for car Sat Nav
DVD/DL for Optiarc 7191S at 8X
 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 To Release The BDR-XU03JM Portable Blu-ray Drive For Macs
New Pioneer XDJ-1000 Multiplayer Offers Touchscreen, Wi-Fi Connectivity, and rekordbox
Pioneer Reports Reduced Sales For 2Q Fiscal 2015
Pioneer KUVO Links Together Club Fans, DJs, and Clubs
Pioneer Launches The Eco-friendly BDR-XD05J2 BD Burner
Pioneer Develops Rearview Mirror Telematics Unit With LTE Connectivity
Atmos Firmware Update for Pioneer Elite SC Receivers Coming this Month
Pioneer Introduces Ultra-thin Portable BD Drive
Pioneer to Sell Its Successful DJ Equipment Business to KKR
Onkyo And Pioneer To Integrate Their AV Businesses
Pioneer Introduces New High-end Blu-ray Players At CEDIA
HDJ-C70 Added to Pioneer's Line-up of Professional DJ Headphones

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 .