Multilevel Optical Data Recording Methods On Phase-Change Media
CHINESE PHYSICS(2003)
摘要
Multilevel data storage (ML) is a new method in the optical storage field, which is also a trend for improving the capability of future optical discs. This article introduces several ML methods based on phase-change media including pit depth modulation (PDM) and mark radial width modulation (MRWM). In addition, some disadvantages and advantages concerning the principle of these methods will be discussed. Finally, a new ML method will be advanced, through which the levels in one recording pit will be increased evidently.
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关键词
multilevel optical data storage,phase-change media
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