Definition of PD Drive
PD Drive
Definition: Refers to the Phase-change Dual optical technology as implemented in Panasonic's patented PD system. Similar to phase-change WORM technology (as used in CD-R) this uses an active layer with reversible properties allowing data to be overwritten in a single pass of the read/write head. This compares with the two-pass operation of conventional MO devices.
Category: Optical storage
Guides: PD Drive