Thursday, July 24, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Samsung's New Curved TV Costs A Fortune
Seagate Launches Channel On Roku
Apple OS X Yosemite Bets Coming on Thursday
Apple Says There Are No Backdoors In iOS
Sony Invests in Image Sensor Production
Ultra-High-Definition TVs Still Lack Market Penetration
Lumia 530 Entry-level Windows Phone Released
ASUS Launches the RT-AC87 Dual-Band Wireless-AC2400 Gigabit Router
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 > 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 PLX-1000 High-torque Turntable Born Again
Pioneer DJ launches rekordbox 3.0
Pioneer Introduces New Receivers, Portable BlueTooth Speakers, And Blu-ray 3D Player
Pioneer Releases Dolby Atmos-Enabled Elite Speakers and SC Receivers
Pioneer Is Selling Its Audiovisual Business to Onkyo
Pioneer CDJ-900NXS Now Works in Conjunction With Serato DJ Software
Pioneer May Sell Its AV Equipment Business: report
Pioneer Offers More Color Optins For DDJ-SB Controller for Serato DJ Intro and Serato DJ
Pioneer Brings Club Sound To Consumers With New Headphones
Pioneer And Memory-Tech Develop 512 GB Optical Disc For Data Archiving
Pioneer Offers Accessories For DJs
Pioneer BDP-170 Blu-ray Disc Player Comes With Wi-Fi, Miracast And Youtube Connectivity

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 .