Fast-Access Optical Drive

A slim-line linear motor is presented for fast access in optical drives. By applying a three-phase commuting linear motor in combination with a split-optical head, an average seek time of 11 ms is realised for a 120-mm optical disc. The rotational latency is reduced by spinning the disc at 100 Hz, r...

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Bibliographic Details
Published in:JPN J APPL PHYS PART 1 REGUL PAP SHORT NOTE REV PAP 2000, Vol.39 (2S), p.862-866
Main Authors: Wals, Jeroen, Dovic, Jadranko, Niessen, Arnold J, Rieck, Marcel, Rijs, Rob M G
Format: Article
Language:English
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Summary:A slim-line linear motor is presented for fast access in optical drives. By applying a three-phase commuting linear motor in combination with a split-optical head, an average seek time of 11 ms is realised for a 120-mm optical disc. The rotational latency is reduced by spinning the disc at 100 Hz, resulting in a total average access time of 25 ms. Two-stage radial tracking is applied, along with a one-dimensional lens actuator to attain high mechanical bandwidths. In addition, a novel scheme for counting tracks during high-speed access is proposed.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.39.862