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Proceedings Paper

Restrictions on pit length in multi-level read-only disk
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Paper Abstract

Nowadays, OMNERC research group is going to advance the capacity to 15GB by reducing the 3T pit length and increasing the level of long pit based on the signal waveform modulation (SWM) ML recording technology. In order to prove this method is realizable, this paper proposes the restriction points of consideration to reduce the minimum pit length which influence the basic specification design of multi-level disk and the difficulty of the following signal processing. Firstly the restriction of optical pick-up resolution is considered. Secondly, the restriction caused by read-out channel is discussed in the paper. At the same time as write strategy has its limit based on the previous research, this paper finally discuss the influence caused by minimize shortest pit length for level design of long length pit.

Paper Details

Date Published: 19 March 2009
PDF: 5 pages
Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 712506 (19 March 2009); doi: 10.1117/12.822496
Show Author Affiliations
Lihua Li, Tsinghua Univ. (China)
Bo Yang, Tsinghua Univ. (China)
Yi Tang, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Jing Pei, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 7125:
Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage
Fuxi Gan, Editor(s)

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