A rewritable DVD disc endorsed by the DVD Forum. Using phase change technology, DVD-RAMs are like removable hard disks, and the media can be rewritten 100,000 times compared to 1,000 times for DVD-RW and DVD+RW. The first DVD-RAM drives with a capacity of 2.6GB (single sided) or 5.2GB (double sided) became available in the spring of 1998. DVD-RAM Version 2 discs with 4.7GB arrived in late 1999, and double-sided 9.4GB discs in 2000. DVD-RAM drives typically read DVD-Video, DVD-ROM and all types of CD media. See DVD, DVD+RW, DVD-RW and optical disc.
Panasonic Drive and Media
Panasonic was the first to debut DVD-RAM drives in 1998. This Panasonic DVD-RAM drive supports both caddy-based and caddyless media. DVD-RAM discs must be placed in the caddy for writing, but all other DVD and CD media can be read bare. (Image courtesy of Panasonic Industrial Company.)
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.
Panasonic Drive and Media
Panasonic was the first to debut DVD-RAM drives in 1998. This Panasonic DVD-RAM drive supports both caddy-based and caddyless media. DVD-RAM discs must be placed in the caddy for writing, but all other DVD and CD media can be read bare. (Image courtesy of Panasonic Industrial Company.)
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) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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Neighboring Terms
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