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US 6,314,062 B1Granted
Magneto-optical disk apparatus that can adjust position of magnetic head with respect to optical head
AssigneeSanyo Electric Co., Ltd.
InventorsYoshihisa Suzuki, Sayoko Tanaka
Life of this patent
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Abstract
A magnetic head which can apply magnetic fields in opposite directions from each other within a beam spot formed on a magneto-optical disk. This magnetic head includes two cores located in close proximity and two coils. The level of the magneto-optical signal output from the optical head becomes greater as a function of deviation of the center of the magnetic head from the center of the laser beam. Therefore, the magnetic head is moved in the tracking direction or the track direction so that the level of the magneto-optical signal becomes 0.
Claims11
A magneto-optical disk apparatus comprising:
- an optical head provided to face a magneto-optical disk, and
- a magnetic head provided to face said magneto-optical disk at a side opposite said optical
- wherein said magnetic head applies a first magnetic field and a second magnetic field of a direction opposite to said first magnetic field within a beam spot formed on said magneto-optical disk by a laser beam emitted from said optical head to said magneto-optical disk.
Dependencies are inferred from the claim text.