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

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

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.

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

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