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Phase-change Dual

 
Phase Change Dual

 
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Phase-change Dual
 
 
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Phase-Change Dual (PD) is a rewritable optical disc
Optical disc

In computing, sound reproduction, and video, an optical disc is a flat, circular disc wherein Data is stored in the pits in its flat surface ? sequentially on the continuous, spiral track extending from the innermost track to the outermost track, covering the entire disc surface....
 format introduced by Panasonic
Panasonic

Panasonic is an international brand name for Japanese electric products manufacturer Panasonic Corporation Under this brand the company sells Plasma display and LCD display panels, DVD recorders and players, Blu-ray Disc players, camcorders, telephones, vacuum cleaners, microwave ovens, shavers, projectors, digital cameras, batteries, lapto...
 in 1995. Much like CD-RW
CD-RW

Compact Disc ReWritable is a rewritable optical disc format. Known as CD-Erasable during its development, CD-RW was introduced in 1997, and was preceded by the never officially released CD-RW#CD-MO in 1988....
, PD uses a phase change layer that can be overwritten in a single pass of the read/write head. A PD disc has a capacity of 650 MB, can be rewritten 500,000 times and is enclosed in a protective cartridge.






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Pd M650 Front Side
Phase-Change Dual (PD) is a rewritable optical disc
Optical disc

In computing, sound reproduction, and video, an optical disc is a flat, circular disc wherein Data is stored in the pits in its flat surface ? sequentially on the continuous, spiral track extending from the innermost track to the outermost track, covering the entire disc surface....
 format introduced by Panasonic
Panasonic

Panasonic is an international brand name for Japanese electric products manufacturer Panasonic Corporation Under this brand the company sells Plasma display and LCD display panels, DVD recorders and players, Blu-ray Disc players, camcorders, telephones, vacuum cleaners, microwave ovens, shavers, projectors, digital cameras, batteries, lapto...
 in 1995. Much like CD-RW
CD-RW

Compact Disc ReWritable is a rewritable optical disc format. Known as CD-Erasable during its development, CD-RW was introduced in 1997, and was preceded by the never officially released CD-RW#CD-MO in 1988....
, PD uses a phase change layer that can be overwritten in a single pass of the read/write head. A PD disc has a capacity of 650 MB, can be rewritten 500,000 times and is enclosed in a protective cartridge. PD discs are compatible with PD drives, first generation Panasonic
Panasonic

Panasonic is an international brand name for Japanese electric products manufacturer Panasonic Corporation Under this brand the company sells Plasma display and LCD display panels, DVD recorders and players, Blu-ray Disc players, camcorders, telephones, vacuum cleaners, microwave ovens, shavers, projectors, digital cameras, batteries, lapto...
 DVD-RAM
DVD-RAM

DVD-RAM is a disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers. DVD-RAM media have been used in computers as well as camcorders and personal video recorders since 1998....
 drives and Multi CD-R recorders while PD drives can read and write PD discs as well as read CD-ROM
CD-ROM

CD-ROM is a pre-pressed Compact Disc that contains Computer data storage accessible to, but not writable by, a computer. While the Compact Disc format was originally designed for music storage and playback, the 1985 Yellow Book standard developed by Sony and Philips adapted the format to hold any form of Binary file....
s.

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