Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1998-08-05
2000-08-08
Dinh, Tan
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
G11B 1100
Patent
active
061011533
ABSTRACT:
An optomagnetic recording and reproducing system has been developed which demonstrates superior performance when used with multilayer recording substrates. The system features an optical head and magnetic head disposed opposite to each other on different sides of the recording substrate. The novel magnetic head can either incorporate a number of independently driven subheads, or alternately it can be constructed by placing multiple independently driven windings on a single head. Biasing of the magnetic head can either be performed externally using an external magnet or by providing a bias with one of the windings or sub-heads. The resulting optomagnetic recording and reproducing system is suitable for multi-valued recording of an optomagnetic recording medium.
REFERENCES:
patent: 4938915 (1990-07-01), Saito
patent: 5157641 (1992-10-01), Lehureau
patent: 5159584 (1992-10-01), Yanagida et al.
patent: 5278809 (1994-01-01), Ogata
patent: 5363353 (1994-11-01), Kim et al.
patent: 5398219 (1995-03-01), Itoh et al.
patent: 5440531 (1995-08-01), Sato et al.
patent: 5444678 (1995-08-01), Ogata
patent: 5448538 (1995-09-01), Aratani et al.
patent: 5449566 (1995-09-01), Fujii et al.
patent: 5485435 (1996-01-01), Matsuda et al.
patent: 5500839 (1996-03-01), Miyake et al.
patent: 5572491 (1996-11-01), Karibe et al.
Digests of the 13.sup.th Annual Conference on Magnetics in Japan, vol. 13, pp. 62-64 (1989).
Proceedings of the International Symposium on Optical Memory, Kobe (E1803), pp. 343-347 (1989).
S. Tsunashima, Exchange Coupled Films for Magnetooptic Recording Applications, IEEE Translation Journal on Magnetics in Japan, vol. 7, No. 8, (Aug. 1992).
Patent Abstracts of Japan, vol. 015, No. 327 (P-1240), Aug. 20, 1991 (JP 03 119538A).
Patent Abstracts of Japan, vol. 013, No. 424 (P-934), Sep. 21, 1989 (JP 01 155533A).
Patent Abstracts of Japan, vol. 015, No. 469 (P-1281), Nov. 27, 1991 (JP 03 201232A).
Patent Abstracts of Japan, vol. 013, No. 191 (P-867), May 9, 1989 (JP 01 017248A).
Patent Abstracts of Japan, vol. 018, No. 330 (P-1758), Jun. 22, 1994 (JP 06 076390A).
Ishitsuka Kazuko
Ishizaki Osamu
Ohnuki Satoru
Ohta Norio
Sakemoto Akito
Dinh Tan
Hitachi Maxell Ltd.
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