Magneto-optic recording and reproducing apparatus including...

Details Magneto-optic recording and reproducing apparatus including... Magneto-optic recording and reproducing apparatus including...

G - Physics

11

B

352/32.4

G11B 13/04 (2006.01) G11B 11/10 (2006.01) G11B 11/105 (2006.01)

Patent

CA 1300748

ABSTRACT OF THE DISCLOSURE A magneto-optic information-carrying medium having three magnetic layers. A magnetic bias field is generated by a third layer which is premagnetized in the direction parallel to the thickness thereof. A second layer is magnetized by a magnetizing unit. The laser beam incident on the layers is controlled to three intensities for writing and reading information.

561546

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