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Proceedings Paper

Improvement Of Focusing And Tracking Servos In Optical Disk Memory
Author(s): Osamu Ito; Kyosuke Yoshimoto; Isao Watanabe; Takahiro Kubo
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Paper Abstract

In a single beam read-write optical head, an astigmatic method using a cylindrical lens and a push-pull method are adopted for focusing and tracking error sensing, respectively. The disturbances for the servo sensing signals when the optical head records and reads along a pregrooved track, which has the depth of X/8 and is locally intermittent for address code, are compensated by signal processing technology.

Paper Details

Date Published: 12 April 1985
PDF: 5 pages
Proc. SPIE 0529, Optical Mass Data Storage I, (12 April 1985); doi: 10.1117/12.946445
Show Author Affiliations
Osamu Ito, Mitsubishi Electric Corporation (Japan)
Kyosuke Yoshimoto, Mitsubishi Electric Corporation (Japan)
Isao Watanabe, Mitsubishi Electric Corporation (Japan)
Takahiro Kubo, Mitsubishi Electric Corporation (Japan)

Published in SPIE Proceedings Vol. 0529:
Optical Mass Data Storage I
Robert A. Sprague, Editor(s)

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