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

Yi Tang; Jing Pei; Longfa Pan; Haizheng Xu; Mingming Yan

doi:10.1117/12.822637

19 March 2009 Influence of servo error on the readout signal for a multi-level DVD using waveform modulation

Yi Tang, Jing Pei, Longfa Pan, Haizheng Xu, Mingming Yan

Proceedings Volume 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage; 712507 (2009) https://doi.org/10.1117/12.822637
Event: Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 2008, Wuhan, China

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.

Citation Download Citation

Yi Tang, Jing Pei, Longfa Pan, Haizheng Xu, and Mingming Yan "Influence of servo error on the readout signal for a multi-level DVD using waveform modulation", Proc. SPIE 7125, Eighth International Symposium on Optical Storage and 2008 International Workshop on Information Data Storage, 712507 (19 March 2009); https://doi.org/10.1117/12.822637

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