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- Double-density_compact_disc abstract "Double-density compact disc (DDCD) is an optical disc technology developed by Sony using the same laser wavelength as compact disc, namely 780 nm. The format is defined by the Purple Book standard document.For a 120 mm disc, it doubles the original 650 MB to 1.3 GB capacity of a CD on recordable (DDCD-R) and rewritable (DDCD-RW) discs by narrowing the track pitch from 1.6 to 1.1 micrometers, and shortening the minimum pit length from 0.833 to 0.623 micrometer. The DDCD was also available in read-only format (DDCD-ROM). All three formats existed also in small 80 mm discs.The technology failed to acquire significant market share before the success of DVD technology. The DVD technology offered a significantly higher capacity (four times more initially with 4.7 GB on single layer discs, 8.5 GB on dual layer discs to a max of 17.08GB on a dual-side+dual layer disc).The only DDCD recorder introduced was the Sony CRX200E.The technology was marked as 'legacy' in the 2006-edition of the SCSI Multimedia Commands set (MMC).".
- Double-density_compact_disc wikiPageExternalLink wpe07.htm.
- Double-density_compact_disc wikiPageID "1723374".
- Double-density_compact_disc wikiPageRevisionID "541184419".
- Double-density_compact_disc hasPhotoCollection Double-density_compact_disc.
- Double-density_compact_disc subject Category:120_mm_discs.
- Double-density_compact_disc subject Category:Audio_storage.
- Double-density_compact_disc subject Category:Optical_computer_storage_media.
- Double-density_compact_disc subject Category:Video_storage.
- Double-density_compact_disc type 120MmDiscs.
- Double-density_compact_disc type Artifact100021939.
- Double-density_compact_disc type Device103183080.
- Double-density_compact_disc type Instrumentality103575240.
- Double-density_compact_disc type Medium106254669.
- Double-density_compact_disc type MemoryDevice103744840.
- Double-density_compact_disc type Object100002684.
- Double-density_compact_disc type OpticalComputerStorageMedia.
- Double-density_compact_disc type PhonographRecord103924069.
- Double-density_compact_disc type PhysicalEntity100001930.
- Double-density_compact_disc type Recording104063868.
- Double-density_compact_disc type SoundRecording104262678.
- Double-density_compact_disc type StorageMedium106263762.
- Double-density_compact_disc type Whole100003553.
- Double-density_compact_disc comment "Double-density compact disc (DDCD) is an optical disc technology developed by Sony using the same laser wavelength as compact disc, namely 780 nm. The format is defined by the Purple Book standard document.For a 120 mm disc, it doubles the original 650 MB to 1.3 GB capacity of a CD on recordable (DDCD-R) and rewritable (DDCD-RW) discs by narrowing the track pitch from 1.6 to 1.1 micrometers, and shortening the minimum pit length from 0.833 to 0.623 micrometer.".
- Double-density_compact_disc label "DDCD".
- Double-density_compact_disc label "DDCD".
- Double-density_compact_disc label "Double-density compact disc".
- Double-density_compact_disc sameAs DDCD.
- Double-density_compact_disc sameAs DDCD.
- Double-density_compact_disc sameAs m.05r6sp.
- Double-density_compact_disc sameAs Q3274108.
- Double-density_compact_disc sameAs Q3274108.
- Double-density_compact_disc sameAs Double-density_compact_disc.
- Double-density_compact_disc wasDerivedFrom Double-density_compact_disc?oldid=541184419.
- Double-density_compact_disc isPrimaryTopicOf Double-density_compact_disc.