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Comparison of various optical storage media. This article compares the technical specifications of multiple high-definition formats, including HD DVD and Blu-ray Disc; two mutually incompatible, high-definition optical disc formats that, beginning in 2006, attempted to improve upon and eventually replace the DVD standard.
DVD+RW: rewriteable DVD defined by DVD+RW Alliance; DVD-RAM rewriteable, capable of random write access, not generally format-compatible with DVD; Blu-ray Disc: DVD successor, capable of high-definition video [1] BD-R: WORM Blu-ray Disc by the Blu-ray Disc Association; BD-RE: rewriteable BD; HD DVD: failed HD format defined by the DVD Forum [2]
Tools. Tools. move to sidebar hide. Actions Read; ... This comparison of disc authoring software compares different optical disc ... CD-R /W DVD-R /RW /RAM DVD+R /RW ...
Those 74 minutes come from the maximum playtime that the Red Book (audio CD standard) specifies for a digital audio CD (CD-DA); although now, most recordable CDs can hold 80 minutes worth of data. The DVD and Blu-ray discs hold a higher capacity of data, so reading or writing those discs in the same 74-minute time-frame requires a higher data ...
For comparison with analogue media, the pitch of the spiral of a 240-groove-per-inch long-playing record and a Laserdisc are 106 μm (66 times the CD track pitch) and 4.6 μm (2.9 times), respectively. The tip of a 0.7-mil stylus has a diameter of 18 μm (11 times that of the CD laser spot). Data is from , , and .
An optical disc is designed to support one of three recording types: read-only (such as CD and CD-ROM), recordable (write-once, like CD-R), or re-recordable (rewritable, like CD-RW). Write-once optical discs commonly have an organic dye (may also be a ( phthalocyanine ) azo dye , mainly used by Verbatim , or an oxonol dye, used by Fujifilm [ 4 ...
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Although a number of optical formats have been used over time, the most common examples are optical disks like the compact disc (CD) and DVD. Reading and writing methods have also varied over time, but most modern systems as of 2023 [update] use lasers as the light source and use it both for reading and writing to the discs. [ 1 ]