Disk drive in which dynamic fly height of head is adjusted, and method of adjusting the dynamic fly height of the head
AssigneeKabushiki Kaisha Toshiba
InventorSatoshi Kuwahara
Life of this patent
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Abstract
According to one embodiment, a disk drive includes a heating element which is provided on a head and generates heat when supplied with power, thereby to adjust a dynamic flying height of the head. A head-movement detecting unit detects the abnormal movement of the head, a value of which is larger than a preset movement value during a head positioning control. In this case, a heating-element controller stops supplying power to the heating element.
Claims18
A disk drive comprising:
- a heating element which is provided on a head and is configured to generate heat when supplied with power, thereby to adjust a dynamic flying height of the head;
- a head-movement detecting unit which is configured to detect an abnormal movement of the head, a value of which is larger than a preset movement value during a head positioning control performed to settle the head at a target position on a disk;
- and
- a heating-element controller which is configured to stop a supply of power to the heating element when the abnormal movement of the head has been detected.
A method of adjusting a dynamic flying height of a head having a heating element, which is designed for use in a disk drive, and which adjusts the dynamic flying height of the head by supplying power to the heating element, the method comprising:
- detecting an abnormal movement of the head, a value of which exceeds a preset movement value during a head positioning control performed to settle the head at a target position on a disk;
- and
- stopping a supply of power to the heating element when the abnormal movement of the head is detected.
Dependencies are inferred from the claim text.