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Proceedings Paper

Lens shift correction for DVD-RAM tracking servo
Author(s): Tetsuya Shihara; Katsuya Watanabe; Shin-ichi Kadowaki; Hiromichi Ishibashi
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Paper Abstract

Generally, push-pull tracking detection, necessary for read/write type optical disk, is sensitive to tracking lens-shift caused by eccentric disk rotation or track jump acceleration /deceleration. The lens-shift yields tracking offset easily, which makes record or reproduction information signal jitters get worse. The tracking offset versus to the lens-shift tends to be large, as an optical pick-up becomes small. Furthermore, in consideration of mobile application, not only the lens-shift but also the lens droops in a vertical posture increases.

Paper Details

Date Published: 28 June 1999
PDF: 3 pages
Proc. SPIE 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999, 38640A (28 June 1999); doi: 10.1117/12.997639
Show Author Affiliations
Tetsuya Shihara, Matsushita Electric Industrial Co., Ltd. (Japan)
Katsuya Watanabe, Matsushita Electric Industrial Co., Ltd. (Japan)
Shin-ichi Kadowaki, Matsushita Electric Industrial Co., Ltd. (Japan)
Hiromichi Ishibashi, Matsushita Electric Industrial Co., Ltd. (Japan)


Published in SPIE Proceedings Vol. 3864:
Joint International Symposium on Optical Memory and Optical Data Storage 1999
Shigeo R. Kubota; Ryuichi Katayama; Douglas G. Stinson, Editor(s)

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