(DVD-Read Write) A rewritable (re-recordable) DVD disc for both movies and data from the DVD Forum. Also called "DVD Dash RW" and "DVD Minus RW," DVD-RW uses phase change recording. The media hold 4.7GB per side and can be rewritten 1,000 times. See DVD drives, DVD, DVD+RW and optical disc.
In practice, the term "DVD" refers to all DVD formats. The phrase "rewrite the data on the DVD" really means "rewrite the data on the DVD-RW or DVD+RW." See DVD.
Phase Change Recording
In rewritable DVDs, different intensities of the laser turn bits in the phase change recording layer between a crystalline state and an amorphous state.
In practice, the term "DVD" refers to all DVD formats. The phrase "rewrite the data on the DVD" really means "rewrite the data on the DVD-RW or DVD+RW." See DVD.
Phase Change Recording
In rewritable DVDs, different intensities of the laser turn bits in the phase change recording layer between a crystalline state and an amorphous state.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
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