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Proceedings Paper

New DPD tracking servo method by signal processing for high-density ROM discs
Author(s): Junya Shiraishi; Tsutomu Maruyama; Yoshihiro Takemoto; Isao Ichimura; Shoei Kobayashi
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Paper 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.

Paper Details

Date Published: 17 July 2007
PDF: 8 pages
Proc. SPIE 6620, Optical Data Storage 2007, 66200W (17 July 2007); doi: 10.1117/12.738917
Show Author Affiliations
Junya Shiraishi, Sony Corp. (Japan)
Tsutomu Maruyama, Sony Corp. (Japan)
Yoshihiro Takemoto, Sony Corp. (Japan)
Isao Ichimura, Sony Corp. (Japan)
Shoei Kobayashi, Sony Corp. (Japan)

Published in SPIE Proceedings Vol. 6620:
Optical Data Storage 2007
Bernard Bell; Takeshi Shimano, Editor(s)

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