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Proceedings Paper

Multi-Beam Magneto-Optical Disk Drive For Parallel Read/Write Operation
Author(s): Ryuichi Katayama; Kazuhiro Yoshihara; Yutaka Yamanaka; Masaki Tsunekane; Kiminori Yoshida; Keiichi Kubota
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Paper Abstract

A multi-beam optical disk drive, which improves the data transfer rate for the magneto-optical disk systems, has been developed. It employs a newly developed image rotating actuator for tracing multi-tracks simultaneously, and photodiode arrays for simplifying signal detection circuits. Four-channel parallel read/write operation has been accomplished. The carrier-to-noise ratio is greater than 55dB, and the crosstalk between channels is lower than -36dB. A data transfer rate, four times that for an ordinary single-beam optical disk drive, has been real ized.

Paper Details

Date Published: 19 May 1989
PDF: 7 pages
Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); doi: 10.1117/12.952748
Show Author Affiliations
Ryuichi Katayama, NEC Corporation (Japan)
Kazuhiro Yoshihara, NEC Corporation (Japan)
Yutaka Yamanaka, NEC Corporation (Japan)
Masaki Tsunekane, NEC Corporation (Japan)
Kiminori Yoshida, NEC Corporation (Japan)
Keiichi Kubota, NEC Corporation (Japan)


Published in SPIE Proceedings Vol. 1078:
Optical Data Storage Topical Meeting
Gordon R. Knight; Clark N. Kurtz, Editor(s)

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