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Multi-level data storage system using phase-change optical discs

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2 Author(s)
O'Neill, M.P. ; Calimetrics Inc., Alameda, CA, USA ; Wong, T.L.

Calimetrics Inc. has worked previously on multi-level (MIL) ROM systems to prove that this concept could be implemented using existinand manufacturing infrastructure. Pit-depth modulation (PDM) technology was the result and simple proof-of-concept systems were created for both CD and DVD-ROM. Since then, Calimetrics Inc. has been focusing on multi-level RW phase-change systems, given the greater business interests that were exhibited for the rewritable market. We report here on progress to date on multi-level CDRW technology and look forward to its application to DVD-based RW systems.

Published in:

Optical Data Storage, 2000. Conference Digest

Date of Conference:

14-17 May 2000