DVD-D
Encyclopedia
DVD-Ds, also referred to as disposable DVDs, are a type of digital video disc
that is designed to be used for a maximum 48 hours after the containing package is opened. After this time, the DVDs become unreadable to DVD players 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. However, if a movie or audio production is in progress, the media may be played until the conclusion even if the 48 hours have expired. The DVD-D becomes void directly after if a production was paused or stopped then is played to the end post-48 hour expiration window. 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. Some people also suspected that the coating did not react with sunlight or air, but rather with the laser of the DVD player. 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.
DVD
A DVD is an optical disc storage media format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. DVDs offer higher storage capacity than Compact Discs while having the same dimensions....
that is designed to be used for a maximum 48 hours after the containing package is opened. After this time, the DVDs become unreadable to DVD players 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. However, if a movie or audio production is in progress, the media may be played until the conclusion even if the 48 hours have expired. The DVD-D becomes void directly after if a production was paused or stopped then is played to the end post-48 hour expiration window. The medium in itself is copy protection neutral and does not require additional Digital Rights Management
Digital rights management
Digital rights management is a class of access control technologies that are used by hardware manufacturers, publishers, copyright holders and individuals with the intent to limit the use of digital content and devices after sale. DRM is any technology that inhibits uses of digital content that...
types of applications to be installed for the content to be accessible. Some people also suspected that the coating did not react with sunlight or air, but rather with the laser of the DVD player. 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.
See also
- DIVX (Digital Video Express) and FlexplayFlexplayFlexplay is a trademark for a DVD-compatible optical video disc format with a time-limited playback time. They are often described as "self-destructing" although the disc merely turns black and does not physically disintegrate. The same technology was used by Disney's Buena Vista Home...
, two other disposable disc formats - Disc rotDisc rotDisc rot is a phrase describing the tendency of CD or DVD or other optical disks to become unreadable due to physical or chemical deterioration...
, the unintended decay of optical discs due to physical or chemical deterioration - Planned obsolescencePlanned obsolescencePlanned obsolescence or built-in obsolescence in industrial design is a policy of deliberately planning or designing a product with a limited useful life, so it will become obsolete or nonfunctional after a certain period of time...