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Proceedings Paper

Influence of servo error on the readout signal for a multi-level DVD using waveform modulation
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Paper Abstract

Our team have proposed and implemented a new type of multi-level DVD, which features in using the waveform to differentiate levels. Servo accuracy is an important issue for an optical disk system, since it can directly influence the quality of readout signal. This paper analyses the influence of servo error on the readout signal for our multi-level DVD using numerical simulation. A readout model is established, where focus error (FE) and tracking error (TE) is introduced. A new parameter, waveform deviation, is proposed to quantitatively evaluate the influence. Simulation results show that the influences of TE/FE on readout signal are similar. Each of them will shrink the dynamic range of readout signal. When TE/FE exceeds a threshold, the waveform deviation will increase sharply.

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, 712507 (19 March 2009); doi: 10.1117/12.822637
Show Author Affiliations
Yi Tang, Tsinghua Univ. (China)
Jing Pei, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Haizheng Xu, Tsinghua Univ. (China)
Mingming Yan, 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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