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Proceedings Paper

Development of 40 GB dual-layer rewritable HD DVD media
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Paper Abstract

We have developed a single-side dual-layer rewritable HD DVD media having a larger capacity of 40 GB (20 GB per layer) for the optical system with the NA of 0.65 and the wavelength of 405 nm, and achieved the good recording characteristics. For both layers, the same track pitch of 0.34 μm as HD DVD-RAM was used. We applied more accurate thermal analysis to the dual-layer rewritable media. It was expected that the effect of the cross-erase was very small. By optimizing thermal balance of dual-layer media, the good recording characteristics were obtained for both layers with enough tilt margins. The feasibility of the dual-layer rewritable media of 40 GB user data capacity was shown for HD DVD system.

Paper Details

Date Published: 11 July 2007
PDF: 8 pages
Proc. SPIE 6620, Optical Data Storage 2007, 66202A (11 July 2007); doi: 10.1117/12.738922
Show Author Affiliations
Yasuhiro Satoh, Toshiba Corp. (Japan)
Tsukasa Nakai, Toshiba Corp. (Japan)
Sumio Ashida, Toshiba Corp. (Japan)

Published in SPIE Proceedings Vol. 6620:
Optical Data Storage 2007

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