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US 2001/0008501 A1Published application
Magnetic field generator for magneto-optics memory apparatus with reduced magnetic field reversal time
OwnerTakehiko Sekineinventor
Life of this patent
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Abstract
In a magnetic field generator provided with a magnet to apply a magnetic field onto a magneto-optics recording medium; and a driver for moving said magnet from a first position where said magnet applies a magnetic field in a direction substantially perpendicular to the surface of said magneto-optics recording medium, to a second position where the direction of the magnetic field is opposite to that of the first position; there is further provided a conductive member located near the pole of said magnet parking at the first or the second position.
Claims16
A magnetic field generator, comprising:
- a magnet to apply a magnetic field onto a magneto-optics recording medium;
- a driving means for moving said magnet from a first position where said magnet applies a magnetic field in a direction substantially perpendicular to the surface of said magneto-optics recording medium, to a second position where the direction of the magnetic field is opposite to that of the first position, and
- a conductive member located near the pole of said magnet parking at the first or the second position.
A magneto-optics recording apparatus, comprising:
- (1) a magnetic field generator, comprising;
- a magnet to apply a magnetic field onto a magneto-optics recording medium,
- a driving means for moving said magnet from the first position where said magnet applies a magnetic field substantially perpendicular to the surface of said magneto-optics recording medium, to the second position where the direction of the magnetic field is opposite to that of the first position,
- a conductive member located near the pole of said magnet parked at the first or the second position;
- (2) a rotational driving means to rotate a magneto-optics medium;
- (3) an optical head for recording, reading and/or erasing of data by irradiating a modulated laser beam onto a magneto-optics medium.
3 more elements
Dependencies are inferred from the claim text.