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US 9,805,752 B2Granted
Selective write power variability for magnetic recording
AssigneeSeagate Technology LLC
InventorsJung Min Yoon, Jae Myung Chung, Hwajun Kim
Life of this patent
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Abstract
A storage device includes a storage controller that controls a writer to generate a magnetic field at an air-bearing surface (ABS) of a storage medium and to selectively alter a strength of the magnetic field by a predetermined amount when writing data to select data tracks on the storage medium.
Claims20
Apparatus comprising:
- a storage controller that controls a writer to generate a magnetic field at an air-bearing surface (ABS) of a storage medium and selectively alters a strength of the magnetic field incident on the ABS by a predetermined amount when writing data to a last data track in a data band of shingled magnetic data tracks on the storage medium.
Apparatus comprising:
- a storage device controller configured to increase fly height of a writer by a predetermined amount when writing data to select data tracks on a storage medium to decrease a written width of the select data tracks.
Apparatus comprising:
- a storage device controller that alters a write current parameter by a predetermined amount when writing data to a last data track in a data band of shingled magnetic data tracks on a storage medium to decrease a written width of the last data tracks.
Dependencies are inferred from the claim text.