A New Servo Method With Eccentricity Correction Circuit

Y. Fukui; Y. Miura; M. Suzuki

doi:10.1117/12.936830

14 January 1987 A New Servo Method With Eccentricity Correction Circuit

Y. Fukui, Y. Miura, M. Suzuki

Proceedings Volume 0695, Optical Mass Data Storage II; (1987) https://doi.org/10.1117/12.936830
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

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.

Citation Download Citation

Y. Fukui, Y. Miura, and M. Suzuki "A New Servo Method With Eccentricity Correction Circuit", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); https://doi.org/10.1117/12.936830

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