Saturday, October 25, 2014
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
Google's Pichai to Become Head of Product at Google: report
Internet Explorer 11 Toolkit Allows Enterprise Admins "Spy" On Their Employees
FCC Says Airwave Auction To Delay Until 2016
HP Broadens Moonshot Portfolio With Intel-powered Models
Microsoft To Keep Nokia Brand For Low-end Smartphones
LG Introduces Its First Octa-Core Application Processor
Cloud and Surface 3 Drive Microsoft's Revenue
Micron Urges Investors To Reject TRC Capital's Unsolicited Tender Offer
Active Discussions
Copied dvd's say blank in computer only
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
 Home > News > Optical Storage > ECMA St...
Last 7 Days News : SU MO TU WE TH FR SA All News

Friday, June 29, 2007
ECMA Standardizes Method For the Estimation of Lifetime of DVDs

ECMA has released a new standard that specifies an accelerated aging test method for estimating the life expectancy of recordable or rewritable optical disks.

The property referred to as the archival life of data recorded to optical media plays an increasingly important role for the intended applications.

ECMA's new standard provides a methodology for applying an accelerated aging test method for estimating the life expectancy for the retrievability of information stored on DVD-R/-RW/-RAM, +R/+RW optical discs.

The methodology includes the effects of temperature (T) and relative humidity (RH) in the degradation of the readability of an optical disc. In brief, optical media samples are stored special ovens under different high-stress environments of temperature and relative humidity, for an extended period of time. The disks were tested periodically to monitor the effect of temperature and humidity on the error rate (PISum8, BER). Each disk has its initial error rates measured before their exposure to "stress conditions". The stress conditions are used to accelerate the chemical reaction rate from what would occur normally at ambient or usage conditions. The chemical reaction is considered degradation in desired material property that eventually leads to disc failure. Thereafter, each disk is measured for its error rates after each stress condition time interval. For all those unfamiliar with the optical stroage quality measurements, we should mention that "error rate" is the rate of errors on a disc measured before error correction is applied.

The results are then applied to the Arrhenius and the Eyring acceleration models, a set of mathematical procedures and computations for accelerated aging, which assume that temperature and relatively humidity are the crucial variables that over time affect the longevity of optical media.

The results are used to determine if an optical disc will or will not exceed a life expectancy of X-years.

ECMA's approach does not attempt to model degradation due to complex failure mechanism kinetics, nor does it test for exposure to light, corrosive gases, contaminants, handling, and variations in playback subsystems. Disks exposed to these additional sources of stress or higher levels of T and RH are expected to experience shorter usable lifetimes.

The project was initiated by the Optical Storage Technology Association (OSTA) and developed the initial drafts. Following that development, the project was moved to Ecma International TC31 for further development and finalization. NIST, CDs21 Solutions, and DCAj have also supported the development of the standard.

Western Digital Buys Komag For $1 billion        All News        Sid Meier To Design His First Game for Next-Gen Consoles
New HD Authoring From Corel and NetBlender     Optical Storage News      Blu-Ray, HD DVD Dual Disc Plans Delayed Until 2008

Get RSS feed Easy Print E-Mail this Message

Related News
ECMA Introduces Standard For Parallel Read/write On Multiple-disc Optical Storage Systems
New ECMA Wireless Standard For Short-range Connectivity Operates At A Data Rate of 560 Mbps
ECMA Provides Single Standard For CD and DVD Storage Lifetime Estimation
ECMA Approves CD-R Multi-Speed System, Test Method For the Estimation Of Lifetime of Optical Media Standards
ECMA Updates Test Method for the Estimation of the Archival Lifetetime of Optical Media
ECMASCript 5th Edition Has Been Approved
Ecma Starts TV White Spaces Standard
ECMA Standard Allows Multi-gigabit Wireless Applications
ISO and IEC Publish Global Standard For Testing the Lifetime of Optical Media
ISO Approves Optical Disc Test Standard
ECMA Updated Standard Includes 16X DVD+R DL Media
Ecma Releases Holographic Information Storage Standards

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 .