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US 2021/0065744 A1Published application
Magnetic disk device and method of controlling magnetic disk device
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorShinya Ito
Life of this patent
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Abstract
According to one embodiment, a controller of a magnetic disk device determines whether or not to cause a magnetic flux control unit to generate a magnetic field, and in accordance with the determination result, causes a control circuit to apply a drive voltage to the magnetic flux control unit so that an assisted recording area and a non-assisted recording area are provided in a magnetic disk mixedly as desired.
Claims10
A magnetic disk device comprising:
- a magnetic disk;
- a head comprising a magnetic flux control unit configured to generate a magnetic field toward the magnetic disk;
- a control circuit configured to apply a drive voltage that generates the magnetic field to the magnetic flux control unit;
- and
- a controller configured to control the head and the control circuit, respectively, wherein
- the controller determines whether or not to cause the magnetic flux control unit to generate a magnetic field, and in accordance with the determination result, causes the control circuit to apply a drive voltage to the magnetic flux control unit so that an assisted recording area and a non-assisted recording area are provided in the magnetic disk mixedly as desired, the assisted recording area being an area of the magnetic disk in which data is written while a magnetic field is generated, and the non-assisted recording area being an area of the magnetic disk in which data is written while a magnetic field is not generated.
3 more elements
A method of controlling a magnetic disk device, comprising:
- determining whether to assist writing of data to a magnetic disk by generating a magnetic field from a head toward the magnetic disk;
- and
- in accordance with the determination result, causing the head to generate the magnetic field so that an assisted recording area and a non-assisted recording area are provided in the magnetic disk mixedly as desired, the assisted recording area being an area where the data is written in an assisted manner, and the non-assisted recording area being an area where the data is written in a non-assisted manner.
Dependencies are inferred from the claim text.