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US 8,949,521 B1Granted
Actuator prepositioning for disk drive
AssigneeWestern Digital Technologies, Inc.
InventorsMark A. Heath, Travis D. Fox
Life of this patent
Estimating the term…
Abstract
A target location for an actuator of a disk drive is determined for prepositioning the actuator before receiving a command from a host. The target location is determined based on at least one of a characteristic of the disk drive, recent command activity of the host, and information provided by the host. The actuator is moved toward the target location to preposition the actuator.
Claims20
A method for positioning an actuator of a disk drive in communication with a host, the method comprising:
- determining a target location for prepositioning the actuator to a position expected to decrease a physical access time for a subsequent command from the host before receiving the subsequent command from the host, wherein the target location is determined based on at least one of a characteristic of the disk drive, recent command activity of the host, and information provided by the host;
- and
- moving the actuator toward the target location.
A disk drive in communication with a host, the disk drive comprising:
- at least one disk for storing data;
- at least one head for reading data from and writing data to the at least one disk;
- an actuator for positioning the at least one head in relation to the at least one disk;
- and
- a controller configured to:
- determine a target location for prepositioning the actuator to a position expected to decrease a physical access time for a subsequent command from the host before receiving the subsequent command from the host, wherein the target location is determined based on at least one of a characteristic of the disk drive, recent command activity of the host, and information provided by the host;
- and
- command movement of the actuator toward the target location.
5 more elements
Dependencies are inferred from the claim text.