Analysis of the Differential Phase Detection Signal in Multi-level Run-Length Limited Read-Only Disk Driver

Analysis of the Differential Phase Detection Signal in Multi-level Run-Length Limited Read-Only Disk Driver

Multilevel run-length-limited (ML-RLL) recording technology could be employed to increase the capacity of the read-only disc without changing optical and mechanical units. In this paper, the tracking error signal (TES) of differential phase detection (DPD) for ML-RLL digital versatile disk (DVD) rea...

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Veröffentlicht in:Japanese Journal of Applied Physics 2006-07, Vol.45 (7R), p.5764
Hauptverfasser: Shen, Quanhong, Pei, Jing, Xu, Haizheng, Wang, Lin, Xu, Duanyi
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container_issue 7R
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container_title Japanese Journal of Applied Physics
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creator Shen, Quanhong
Pei, Jing
Xu, Haizheng
Wang, Lin
Xu, Duanyi
description Multilevel run-length-limited (ML-RLL) recording technology could be employed to increase the capacity of the read-only disc without changing optical and mechanical units. In this paper, the tracking error signal (TES) of differential phase detection (DPD) for ML-RLL digital versatile disk (DVD) read-only disk driver is analyzed in both theoretical and experimental way, the uniformity and symmetry of which are worse than that of the DVD read-only disk driver. The variation of peak to peak (PP) value distribution of the DPD signal in open loop of ML-RLL DVD read-only disk driver is about 2.6 times of that of the conventional DVD driver while the asymmetry is about 4 times. It is predicted that some improvements of the tracking servo system are needed in ML-RLL system.
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title Analysis of the Differential Phase Detection Signal in Multi-level Run-Length Limited Read-Only Disk Driver
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