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US 9,431,039 B1Granted
Multiple sensor array usable in two-dimensional magnetic recording
AssigneeWestern Digital (Fremont), LLC
InventorsShaoping Li, Gerardo A. Bertero, Ge Yi, Michael L. Mallary, Qunwen Leng, Eric J. Champion
Life of this patent
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Abstract
A method and system provide a magnetic transducer including a first shield, a plurality of read sensors, and a second shield. The read sensors are between the first shield and the second shield. The read sensors have a plurality of widths in a track width direction and are separated by at least one distance in a down track direction. The down track direction is perpendicular to the track width direction.
Claims26
A magnetic read transducer having an air-bearing surface (ABS) and comprising:
- a first shield;
- a plurality of read sensors having a plurality of widths in a track width direction, the plurality of read sensors being separated by at least one distance in a down track direction and displaced in the track width direction such that none of the plurality of read sensors are aligned in the track width direction, the down track direction being perpendicular to the track width direction, the plurality of read sensors including a central read sensor having a first width of the plurality of widths, a remaining portion of the plurality of widths being based on a distance in the track width direction between each of a remaining portion of the plurality of read sensors and the central read sensor, the remaining portion of the plurality of read sensors including at least two read sensors;
- and
- a second shield, the plurality of read sensors residing between the first shield and the second shield;
- wherein the magnetic transducer is oriented at a plurality of skew angles from the down track direction with respect to a portion of a plurality of tracks on a media, the plurality of skew angles having an absolute value of up to a maximum skew angle, the maximum skew angle being nonzero, the at least one distance being configured such that at the plurality of skew angles neighboring read sensors of the plurality of read sensors are aligned with adjoining tracks of the plurality of tracks.
2 more elements
A magnetic read transducer having an air-bearing surface (ABS) and comprising:
- a first shield;
- a plurality of read sensors having a plurality of widths in a track width direction, the plurality of read sensors being separated by at least one distance in a down track direction, the down track direction being perpendicular to the track width direction;
- and
- a second shield, the plurality of read sensors residing between the first shield and the second shield;
- wherein the plurality of read sensors include a central read sensor having a first width of the plurality of widths, a remaining portion of the plurality of widths being not smaller than the first width.
2 more elements
A disk drive comprising:
- a media including a plurality of tracks;
- a slider including a magnetic read transducer having an air-bearing surface (ABS), the magnetic read transducer including a first shield, a plurality of read sensors and a second shield, the plurality of read sensors having a plurality of widths in a track width direction, the plurality of read sensors being separated by at least one distance in a down track direction and displaced in the track width direction such that none of the plurality of read sensors are aligned in the track width direction, the down track direction being perpendicular to the track width direction, the plurality of read sensors including a central read sensor having a first width of the plurality of widths, a remaining portion of the plurality of widths being based on a distance in the track width direction between each of a remaining portion of the plurality of read sensors and the central read sensor, the remaining portion of the plurality of read sensors including at least two read sensors, the slider being oriented at a plurality of skew angles from the down track direction with respect to a portion of the plurality of tracks, the plurality of skew angles having an absolute value of up to a maximum skew angle, the maximum skew angle being nonzero, the at least one distance being configured such that at the plurality of skew angles neighboring read sensors of the plurality of read sensors are aligned with adjoining tracks of the plurality of tracks.
A method for providing a magnetic read transducer having an air-bearing surface (ABS) comprising:
- providing a first shield;
- providing a plurality of read sensors having a plurality of widths in a track width direction, the plurality of read sensors being separated by at least one distance in a down track direction and displaced in the track width direction such that none of the plurality of read sensors are aligned in the track width direction, the down track direction being perpendicular to the track width direction, the plurality of read sensors including a central read sensor having a first width of the plurality of widths, a remaining portion of the plurality of widths being based on a distance in the track width direction between each of a remaining portion of the plurality of read sensors and the central read sensor, the remaining portion of the plurality of read sensors including at least two read sensors;
- and
- providing a second shield, the plurality of read sensors residing between the first shield and the second shield;
- wherein the magnetic transducer is configured to be oriented at a plurality of skew angles from the down track direction with respect to a portion of a plurality of tracks on a media, the plurality of skew angles having an absolute value of up to a maximum skew angle, the maximum skew angle being nonzero, the at least one distance being configured such that at the plurality of skew angles neighboring read sensors of the plurality of read sensors are aligned with adjoining tracks of the plurality of tracks.
2 more elements
A method for providing a magnetic read transducer having an air-bearing surface (ABS) comprising:
- providing a first shield;
- providing a plurality of read sensors having a plurality of widths in a track width direction, the plurality of read sensors being separated by at least one distance in a down track direction, the down track direction being perpendicular to the track width direction;
- and
- providing a second shield, the plurality of read sensors residing between the first shield and the second shield;
- wherein the plurality of read sensors include a central read sensor having a first width of the plurality of widths, a remaining portion of the plurality of widths being not smaller than the first width.
2 more elements
Dependencies are inferred from the claim text.