NDLI: Characteristics of a DVD double-layer disk in an optical disk drive

Content Provider	IEEE Xplore Digital Library
Author	Chen, L. Wang, W.W. van Boxtel, A. van Endert, T. Tsai, M. Chu, A. Chu, T.
Copyright Year	1965
Abstract	In an optical disk drive, when the laser scanning spot is in focus, both the optical readout high-frequency signal (HF) and radial-error (RE) signal are optimized and thus their amplitudes are maximized to achieve best system performance and have jitter at its minimum. However, while reading on a DVD double-layer disk, the maximum RE signal does not align with the system jitter minimum but is displaced by a focus offset. Simulation results demonstrate that the thickness variation of a DVD disk substrate plays an important role to contribute to the focus offset disalignment of RE maximum and jitter minimum. Further, the intervention of interlayer crosstalk degrades both HF and RE signals, which also contributes to the offset behavior while reading a DVD double-layer disk. It is essential that the drive designer be aware of this offset behavior in order to design the optical drive for reliable interchangeability. To appropriately compensate for the focus offset behavior while reading and recording on a DVD double-layer disk, a self-calibration algorithm is proposed to accomplish optimal jitter performance during reading and recording on a DVD double-layer disk.
Sponsorship	IEEE Magnetics Society
Starting Page	980
Ending Page	982
Page Count	3
File Size	499421
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	DVD Disk drives Optical crosstalk Jitter Optical recording Hafnium Optical design Disk recording System performance Degradation optical disk drive DVD double-layer disk focus offset
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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