Evaluation of a 120 mm Sized Magneto optical Disk System of Over 6 GB Capacity.
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- Tanaka Yasuhito
- Multimedia Systems R & D Division, Hitachi, Ltd., 292 Yoshida–cho, Totsuka–ku, Yokohama, Kanagawa244, Japan
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- Sumi Satoshi
- Hypermedia Research Center, Sanyo Electric Co., Ltd., 180 Ohmori, Anpachi–cho, Anpachi–gun, Gifu 503–01, Japan
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- Matsubayashi Nobuhide
- Optical Memory Business Department, Olympus Optical Co., Ltd., 2951 Ishikawa–cho, Hachioji, Tokyo192, Japan
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- Sato Hideaki
- Image and Media Laboratory, Sharp Corporation, 2613–1 Ichinomoto–cho, Tenri, Nara 632, Japan
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- Murakami Yoshiteru
- Precision Technology Development Center, Sharp Corporation, 2613–1 Ichinomoto–cho, Tenri, Nara 632, Japan
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- Awano Hiroyuki
- Recording Media Research Laboratory, Hitachi Maxell Ltd., 6–20–1 Kinunodai, Yawara–mura, Tsukuba–gun, Ibaraki 300–24, Japan
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- Matsuura Michio
- Fujitsu Laboratories Ltd., 64 Nishiwaki, Ohkubo–cho, Akashi, Hyogo 674, Japan
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- Fujita Goro
- Optical Media Laboratory, Advanced Development Laboratories, Sony Corporation, 6–7–35 Kitashinagawa, Shinagawa–ku, Tokyo 141, Japan
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- Watanabe Tetsu
- Optical Media Laboratory, Advanced Development Laboratories, Sony Corporation, 6–7–35 Kitashinagawa, Shinagawa–ku, Tokyo 141, Japan
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説明
We have studied the feasibility of the 120-mm-sized magneto optical disk system which achieves 6-GB user capacity using an optical pickup with a 640-nm wavelength laser and a 0.6-numerical aperture of the objective lens. We have used three technologies: a laser-pulsed magnetic-field modulation recording, a center-aperture-detection type of magnetically-induced super resolution disk with a 0.6-mm-thick single substrate and partial response equalization with maximum likelihood detection. We have evaluated the system-margins of write power, radial tilt, tracking and focusing offset and have confirmed the feasibility of the linear bit density of 0.235 µ m/bit in 0.6-µ m track pitches.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 37 (4B), 2150-2154, 1998
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390282681225721216
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- NII論文ID
- 10004381950
- 30021831987
- 130004524900
- 210000043005
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 4638429
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可