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AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsTimothy Joseph Chainer, Mark Delorman Schultz, Edward John Yarmchuk
Estimating the term…
A technique for self-servowriting a servopattern on a data storage medium is disclosed. An initial set of servopattern tracks is written by moving an actuator against a compliant structure (e.g., crashstop) with a first force applied thereto to hold the actuator in a first position to write a first track of the servopattern. The force is changed, thereby reaching a second position of the actuator against the compliant structure, at which a second track of the servopattern is written. The process is iterated for additional tracks. The distances (i.e., overlap) between pairs of written tracks are measured using a read element of the actuator, and this measured distance is compared to predetermined, desired distance. If the measured distance is within a specified tolerance, the process is complete; and if not, the tracks are erased and the process is repeated with changed forces applied to the actuator against the crashstop resulting in modified distances between tracks. The present invention overcomes the problem of self-servowriting an initial set of tracks of a servopattern, especially when the read element is separated from the write element in a direction along which the servowriting steps.
In a data storage system, a method for positioning an actuator over a storage medium in motion relative thereto, comprising:
In a data storage system having an actuator and a medium in motion relative thereto, the medium requiring a servopattern thereon to be used by the system to guide the actuator, a method for self-servowriting an initial set of tracks on the medium, comprising:
In a data storage system, a system for positioning an actuator over a storage medium in motion relative thereto, comprising:
In a data storage system having an actuator and a medium in motion relative thereto, the medium requiring a servopattern thereon to be used by the system to guide the actuator, a system for self-servowriting an initial set of tracks on the medium, comprising:
Dependencies are inferred from the claim text.