the phase change technology was subsequently employed in all major optical drives, including CD-RW, DVD-RW, DVD+RW, DVD-RAM, UDO and Blu-ray. The phase change disc technology was invented by ...

CD-RW - meaning CD-ReWritable, the CD can be written and re-written to. Unlike multi-session discs, existing data can be overwritten. DVD-ROMs - read only, the data is written to them before they ...

The most common types are CD, DVD and Blu-ray. As removable media, optical discs superseded the earlier magnetic disk cartridges because they weigh less, have higher capacities and are not subject ...