Magnetic disk device and method of controlling the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorTakeyori Hara
Life of this patent
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Abstract
According to one embodiment, a magnetic disk device comprises a first actuator which displaces magnetic heads in a radial direction of the magnetic disks, second actuators which displace the magnetic heads in a direction along the radial direction of the magnetic disks independently from each other, third actuators which displace the magnetic heads in directions opposite to each other along the radial direction of the magnetic disks by a same amount at a same time, and a controller which controls driving of the first actuator, driving of the second actuators and driving of the third actuators.
Claims6
A magnetic disk device comprising:
- at least one circular magnetic disk including a pair of recording surfaces in an obverse-reverse relationship;
- a plurality of magnetic heads which write and read data to each the corresponding recording surface of the magnetic disks;
- a first actuator which displaces the magnetic heads in a radial direction of the magnetic disks between inner and outer circumferences of the magnetic disks;
- a plurality of second actuators which displace the magnetic heads in a direction along the radial direction of the magnetic disks independently from each other;
- a plurality of third actuators which displace the magnetic heads in directions opposite to each other along the radial direction of the magnetic disks by a same amount at a same time;
- and
- a controller which moves the magnetic heads to respective target positions on the recording surfaces of the magnetic disks and further causes the magnetic heads to follow respective target tracks at the respective target positions by controlling driving of the first actuator, driving of the second actuators and driving of the third actuators.
A method of controlling a magnetic disk device comprising:
- at least one circular magnetic disk including a pair of recording surfaces in an obverse-reverse relationship;
- a plurality of magnetic heads which write and read data to each the corresponding recording surface of the magnetic disks;
- a first actuator which displaces the magnetic heads in a radial direction of the magnetic disks between inner and outer circumferences of the magnetic disks;
- a plurality of second actuators which displace the magnetic heads in a direction along the radial direction of the magnetic disks independently from each other;
- and
- a plurality of third actuators which displace the second actuators in directions opposite to each other along the radial direction of the magnetic disks by a same amount at a same time,
- the method comprising
- moving the magnetic heads to respective target positions on the recording surfaces of the magnetic disks and causing the magnetic heads to follow respective target tracks at the target positions by controlling driving of the first actuator, driving of the second actuators and driving of the third actuators.
Dependencies are inferred from the claim text.