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Proceedings Paper

Tracking servo method for the gap servo near field optical storage systems
Author(s): Jeong-Kyo Seo; Jeong Uk Lee; Yun Sup Shin; Jin-Moo Park; In Ho Choi; Byung-Hoon Min
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Paper Abstract

Gap servo systems based on one of near field technologies are generally using the 1-beam push pull method to generate servo signal and this causes the optical DC offset problem in servo signal. In this paper, we presented new method of track error generation using the proposed GELP signal for the gap servo near field optical storage systems. By using the GELP signal and 2-divided photo-detector for the gap error signal detection, test result shows the optical DC offset in track error signal generated from lens movement could be eliminated.

Paper Details

Date Published: 22 June 2006
PDF: 8 pages
Proc. SPIE 6282, Optical Data Storage 2006, 62820E (22 June 2006); doi: 10.1117/12.685173
Show Author Affiliations
Jeong-Kyo Seo, LG Electronics (South Korea)
Jeong Uk Lee, LG Electronics (South Korea)
Yun Sup Shin, LG Electronics (South Korea)
Jin-Moo Park, LG Electronics (South Korea)
In Ho Choi, LG Electronics (South Korea)
Byung-Hoon Min, LG Electronics (South Korea)

Published in SPIE Proceedings Vol. 6282:
Optical Data Storage 2006
Ryuichi Katayama; Tuviah E. Schlesinger, Editor(s)

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