Multilevel Optical Recording

Terrence L. Wong; Michael P. O’Neill

doi:10.3379/jmsjmag.25.433

Journal of the Magnetics Society of Japan

Online ISSN : 1880-4004
Print ISSN : 0285-0192
ISSN-L : 0285-0192

Novel Recording Technology

Multilevel Optical Recording

Terrence L. Wong, Michael P. O’Neill

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Keywords: multilevel, optical recording, write-once, rewritable, triple density, phase change, dye-based, modulation coding, error correction coding

JOURNAL OPEN ACCESS

2001 Volume 25 Issue 3_2 Pages 433-436

DOI https://doi.org/10.3379/jmsjmag.25.433

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Abstract

In order to increase storage capacity and data transfer rates, a sophisticated signal processing technology − multilevel technology − has been developed. To demonstrate the advantages of this novel technology, a multilevel (ML) optical data storage system that triples the capacity and transfer speed of CD systems has been realized. This article explains not only the basic system concept but also describes how the ML system has met the margins required for existing manufacturing processes.

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