Magnetic disk drive for controlling flying height of magnetic head
AssigneeFujitsu Limited
InventorsMasao Kondo, Shigeyoshi Umemiya
Life of this patent
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Abstract
A magnetic disk drive includes a magnetic head, a magnetic disk, an actuator for changing the position of the magnetic head with respect to the magnetic disk, a sensor for detecting vibration of the magnetic head; and a controller for detecting contact between the magnetic head and the magnetic disk on the basis of the detected vibration and for controlling the actuator.
Claims16
A magnetic disk drive comprising:
- a magnetic head;
- a magnetic disk;
- an actuator for changing the position of the magnetic head with respect to the magnetic disk;
- a sensor for detecting vibration of the magnetic head;
- and
- a controller for detecting contact between the magnetic head and the magnetic disk on the basis of the detected vibration and for controlling the actuator.
A method for controlling a flying height of a magnetic head of a magnetic disk drive including the magnetic head, a magnetic disk, an actuator for changing the position of the magnetic head with respect to the magnetic disk, and a sensor for detecting vibration of the magnetic head, the method comprising:
- measuring vibration of the magnetic head when the magnetic head is brought into contact with the magnetic disk;
- detecting contact between the magnetic head and the magnetic disk on the basis of the measurement of vibration;
- and
- controlling the actuator on the basis of the detection.
Dependencies are inferred from the claim text.