Multi-Beam Magneto-Optical Disk Drive For Parallel Read/Write Operation

Ryuichi Katayama; Kazuhiro Yoshihara; Yutaka Yamanaka; Masaki Tsunekane; Kiminori Yoshida; Keiichi Kubota

doi:10.1117/12.952748

19 May 1989 Multi-Beam Magneto-Optical Disk Drive For Parallel Read/Write Operation

Ryuichi Katayama, Kazuhiro Yoshihara, Yutaka Yamanaka, Masaki Tsunekane, Kiminori Yoshida, Keiichi Kubota

Proceedings Volume 1078, Optical Data Storage Topical Meeting; (1989) https://doi.org/10.1117/12.952748
Event: OE/LASE '89, 1989, Los Angeles, CA, United States

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.

Citation Download Citation

Ryuichi Katayama, Kazuhiro Yoshihara, Yutaka Yamanaka, Masaki Tsunekane, Kiminori Yoshida, and Keiichi Kubota "Multi-Beam Magneto-Optical Disk Drive For Parallel Read/Write Operation", Proc. SPIE 1078, Optical Data Storage Topical Meeting, (19 May 1989); https://doi.org/10.1117/12.952748

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