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Proceedings Paper

A new detecting method of radial tilt and plane vibration of disk
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Paper Abstract

The radial tilt between vertical direction of disc and optical axis of lens in standard DVD traverse, plane vibration and warp of disc are important parameters in production and detection of DVD discs. In this paper, a new dynamic detection method which we call pulse-width method is proposed to detect the radial tilt, plane vibration and warp through analyzing the optical and electrical features of traverse. Based on the method, an apparatus is developed and the experimental results compared with the analysis results verify the validity of the method. The applicability and testing precision are also analyzed.

Paper Details

Date Published: 3 January 2005
PDF: 8 pages
Proc. SPIE 5643, Advances in Optical Data Storage Technology, (3 January 2005); doi: 10.1117/12.576167
Show Author Affiliations
Jigang Ru, Tsinghua Univ. (China)
Longfa Pan, Tsinghua Univ. (China)
Jianshe Ma, Tsinghua Univ. (China)


Published in SPIE Proceedings Vol. 5643:
Advances in Optical Data Storage Technology
Duanyi Xu; Kees A. Schouhamer Immink; Keiji Shono, Editor(s)

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