DVD-D
DVD-Ds, also referred to as disposable DVDs[1], are a type of digital video disc that is designed to be used for 48 hours after the containing package is opened.[2] After this time, the DVDs become unreadable to DVD players[1] because they contain a chemical that, after the set period of time, will cause a DVD player to display a "No Disc" message when inserted.[1] The medium in itself is copy protection neutral and does not require additional Digital Rights Management types of applications to be installed for the content to be accessible.[1] Some people also suspected that the coating did not react with sunlight or air, but rather with the laser of the DVD player.[3] The technology used for DVD-Ds is different from that for earlier disposable DVDs. The earlier discs were isolated from exposure to air. When the packaging was opened, a special coating on the disc started to decay due to a chemical reaction with the surrounding air. As the reaction progressed the disc surface changed its color and after a predetermined time it became unreadable. [4]
References
- ^ a b c d "This DVD will self-destruct in 48 hours". www.theregister.co.uk. Retrieved 2008-05-16.
{{cite web}}: Text "The Register" ignored (help) - ^ "DVD-D self destructs after 48 hours". www.pocket-lint.co.uk. Retrieved 2008-05-16.
- ^ http://www.tomshardware.com/de/DVD-D-Disposal-Wegwerf-DVD,news-240832.html
- ^ http://hometheater.about.com/cs/dvdlaserdisc/a/aathrowawaydvd.htm
External links
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