Development of 40 GB dual-layer rewritable HD DVD media

Yasuhiro Satoh; Tsukasa Nakai; Sumio Ashida

doi:10.1117/12.738922

11 July 2007 Development of 40 GB dual-layer rewritable HD DVD media

Yasuhiro Satoh, Tsukasa Nakai, Sumio Ashida

Proceedings Volume 6620, Optical Data Storage 2007; 66202A (2007) https://doi.org/10.1117/12.738922
Event: Optical Data Storage 2007, 2007, Portland, OR, United States

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.

Citation Download Citation

Yasuhiro Satoh, Tsukasa Nakai, and Sumio Ashida "Development of 40 GB dual-layer rewritable HD DVD media", Proc. SPIE 6620, Optical Data Storage 2007, 66202A (11 July 2007); https://doi.org/10.1117/12.738922

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