Monday, October 20, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Apple iOS 8.1 Available For Download
E FUN To Relase $179 Windows tablet
Microsoft And Dell Puts Azure In A Box
TDK Brings Wireless Charging To Electric Cars
Intel To Work With AT&T To Research Software Defined Networking
Intel Meegopad T01 Is A Bay Trail PC On HDMI Stick
Biostar Relases New iDEQ-T1 Compact Desktop
SK Telecom and Samsung Join Hands to Lead 5G Network Technology
Active Discussions
How to generate lots of different CDs quickly
Yamaha CRW-F1UX
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
 Home > News > Optical Storage > Sony Re...
Last 7 Days News : SU MO TU WE TH FR SA All News

Tuesday, November 06, 2007
Sony Reports Progress in Holographic Storage


Sony managed to read and write on seven layers on holographic medium using the Micro-reflector method, further improving the company's previous achievements that stored data in 4 layers of a volumetric optical disc.

In the Micro-Reflector recording technology, a laser light emitted from a blue violet semiconductor laser diode is split into two so that one irradiates the front side of a volumetric optical disc medium as a reference light, while the other is emitted to the back side as a recording light. By precisely aligning the focal points of the two laser beams using servo technology, the two counter-propagating light beams focus on the same point on the disc's holographic recording material. Their interference creates a diffraction-limited size fringe corresponding to a 1 bit of information. Changing the focal points results in recording in more layers. During reproduction, light is emitted on the front side of the medium.

However, Micro-Reflector multi-layer recording does not avoid the issues met in multi-layer recording systems in general. The reproduction signal gets weaker as the system tried to read the deeper layers. In addition, a slow data rate is also listed as a problem.

Sony made progress in increasing the data transmission speed, memory density per layer and the number of recording layers. Tech-On publication reports that Sony managed to record data on a volumetric disc spinning at 1050rpm, 15 times faster than the company's previous demonstration, offering an equivalent data transmission of 3Mbps in case of 1-7PP modulated data (already implemented by the Blu-ray Disc).

Storage density was also increased to Gbytes per layer, for a 12cm disc.

Sony said that it calculated the error rates of reproduced signals on a 7-layer medium, with the maximum reported error rate to be 4.1 ? 10-4.

The company made the announcement at ISOM' 07, an international conference on optical memory, which took place Oct 21-25, 2007, in Singapore.

Sony also announced the results of recording and reading data on a 10-layer disc, suggesting promising eye-pattern signals.

Sony aims at the production of a a 500 Gbytes (25 Gbytes x 20 layers) 12cm disc by 2010.


Previous
Next
CinemaNow and Sonic Enable Secure Movie Download and Burn        All News        MPEG LA Sues Alcatel Lucent for MPEG-2 Patents
CinemaNow and Sonic Enable Secure Movie Download and Burn     Optical Storage News      CyberLink Launches of DVD Suite 6

Get RSS feed Easy Print E-Mail this Message

Related News
Sony To Release Android Lollipop To Its Entire Xperia Xperia Z Series
New Sony Headphones, Portable Headphone DAC/Amplifier and Headphone Cables Support Hi-Resolution Audio
Sony Xperia Z3 Coming To The US
PlayStation TV Coming October 14th
Sony Develops SmartEyeglass, Launches SDK
Sony To Offer Unity For PlayStation To PlayStation Licensed Developers
Sony Slashes Guidance Due To Poor Smartphone Sales
Sony Smart EyeGlass Prototype Appears At IFA
New Sony Camera Shoots In The Dark
Sony Unveils New Xperia Z3, Z3 Compact And More at IFA
Sony PSN Back Online
Sony Offers New Smart Tennis Sensor

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 .