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Proceedings Paper

A New Servo Method With Eccentricity Correction Circuit
Author(s): Y. Fukui; Y. Miura; M. Suzuki
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Paper Abstract

A new servo method with eccentricity correction circuit for an optical disc equipment is developed. When eccentricity exists, the relative position between tracks and rotation center of a disc varies sinusoid according to the disc rotation. Eccentricity correction is performed by moving actuater according to the synchronized sinusoidal correction signal. Amplitude and phase of the correction signal are equalized to those of track movement by microcomputer. This eccentricity correction can reduce a 200 μm eccentricity down to 10 μm, improve tracking ability, and shorten track access time.

Paper Details

Date Published: 14 January 1987
PDF: 6 pages
Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936830
Show Author Affiliations
Y. Fukui, Hitachi Ltd. (Japan)
Y. Miura, Hitachi Ltd. (Japan)
M. Suzuki, Hitachi Ltd. (Japan)

Published in SPIE Proceedings Vol. 0695:
Optical Mass Data Storage II
Robert P. Freese; Albert A. Jamberdino; Maarten R. de Haan, Editor(s)

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