Magneto-optical recording medium and apparatus

Details Magneto-optical recording medium and apparatus Magneto-optical recording medium and apparatus

1990-07-03

1993-03-09

LaRoche, Eugene R.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

369 13, 369215, 369219, 369220, 360 59, 360114, G11B 1700, G11B 1100

Patent

active

051930803

ABSTRACT:
Guide parts and driving parts are independently provided for an optical head and a magnetic bias field generator, and a relative position control part controls the relative positions of the two so that the both can access recording medium tracks individually. Furthermore, a magnetic pattern track for use as the detection signal of the absolute position of the magnetic bias field generator to the magneto-optical recording medium is formed on the magneto-optical recording medium itself, and a positioning control part of the magnetic bias field generator using this magnetic pattern track is provided, so that the positioning control of the absolute position of the magnetic bias field generator with respect to the magneto-optical recording medium may be realized.

REFERENCES:
patent: 4443721 (1984-04-01), Jansen
patent: 4701894 (1987-10-01), Watson
patent: 4706234 (1987-11-01), Okada
patent: 4712203 (1987-12-01), Saito et al.
patent: 4740946 (1988-04-01), Yumura et al.
patent: 4799766 (1989-01-01), Estes
patent: 4814907 (1989-03-01), Goor
patent: 4991163 (1991-02-01), Tokushuku et al.
patent: 5027334 (1991-06-01), Yamanara et al.

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