New DPD tracking servo method by signal processing for high-density ROM discs

Junya Shiraishi; Tsutomu Maruyama; Yoshihiro Takemoto; Isao Ichimura; Shoei Kobayashi

doi:10.1117/12.738917

17 July 2007 New DPD tracking servo method by signal processing for high-density ROM discs

Junya Shiraishi, Tsutomu Maruyama, Yoshihiro Takemoto, Isao Ichimura, Shoei Kobayashi

Proceedings Volume 6620, Optical Data Storage 2007; 66200W (2007) https://doi.org/10.1117/12.738917
Event: Optical Data Storage 2007, 2007, Portland, OR, United States

Abstract

Differential phase detection (DPD) is the most popular tracking error detection method for read-only optical discs (ROM discs). However, DPD tracking-error signals deteriorate for high-density discs such as over 30-GB Blu-ray discs (BDs) where zero-cross detection becomes inaccurate. To solve this problem, we propose a new zero-cross-detection-free DPD (ZF-DPD) method by applying the least-mean-square (LMS) algorithm adaptive equalizer. We experimentally confirmed its effectiveness for a high-density (33.3 GB/layer) four-layer BD-ROM disc.

Citation Download Citation

Junya Shiraishi, Tsutomu Maruyama, Yoshihiro Takemoto, Isao Ichimura, and Shoei Kobayashi "New DPD tracking servo method by signal processing for high-density ROM discs", Proc. SPIE 6620, Optical Data Storage 2007, 66200W (17 July 2007); https://doi.org/10.1117/12.738917

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