Optical data storage medium

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Reexamination Certificate

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C369S044370, C369S275100

Reexamination Certificate

active

07123569

ABSTRACT:
The invention presents systems and methods for initializing the phase-change layer of an optical medium. The methods include alternately quenching the phase-change material into amorphous states and crystallization states in a single pass of an optical head past the optical medium. The systems include one or more light sources that generate at least two amorphous melt regions and at least two crystallization regions in the optical medium.

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