Seagate Technology Incorporated

Hwajun Kim

Jung Min Yoon

Jae Myung Chung

Seong Yong Yoon

Hojoong Choi

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.

Selective write power variability for magnetic recording

Systems and methods are disclosed for positioning of a reader element in a data storage device employing shingled recording. In an embodiment, an apparatus may comprise a processor configured to receive a read command to retrieve data from a data storage medium having data stored in a shingled manner where at least one track is partially overlapped by an adjacent track, and retrieve the data by adjusting a position of a read element according to a track offset compensation value based on a measured parameter. In another embodiment, a method may comprise determining a track offset compensation value for a first area of a data storage medium based on a measured parameter for the area, adjusting a position of a read head based on the track offset compensation value, and reading data from the first area using the read head.

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Gyeonggi-do, South Korea

Hwajun Kim