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Proceedings Paper

Modulation codes of multilayer disk
Author(s): Hui Zhao; Duanyi Xu; Hongda Yue
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Paper Abstract

Basing on the structure of multi-layer parallel-accessed disc, current modulation code is optimized to achieve higher density storage. Two problems, which may be serious after the optimization, are discussed: acceptable jitter and synchronization process of PLL. A novel method for procuring combined signal of channel bit clock for multi-layer disc is proposed, which satisfies the requirements of PLL. The novel method is at last proved by probabilistic theory. At the end of this paper, parameters of RLL for multi-layer disc are presented: d=4, k=10~15. These new parameters improve the track-density by 15% ~ 20%.

Paper Details

Date Published: 17 September 2002
PDF: 5 pages
Proc. SPIE 4930, Advanced Optical Storage Technology, (17 September 2002); doi: 10.1117/12.483290
Show Author Affiliations
Hui Zhao, Tsinghua Univ. (China)
Duanyi Xu, Tsinghua Univ. (China)
Hongda Yue, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 4930:
Advanced Optical Storage Technology
Duanyi Xu; Seiya Ogawa, Editor(s)

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