US 9,286,925 B1 · Data storage device writing multiple burst correction values at the same radial location

Abstract

A data storage device is disclosed comprising a head actuated over a disk comprising a plurality of servo tracks defined by servo bursts. The head is positioned at a first radial location over the disk and a first burst correction value is generated by reading at least one of the servo bursts. The head is positioned at a second radial location over the disk and a second burst correction value is generated by reading at least one of the servo bursts. The head is positioned at a third radial location over the disk and the first burst correction value and the second burst correction value are written at the third radial location. The head is servoed over the disk by reading the first and second burst correction values.

Claims22

Dependent claims

A data storage device comprising:

a disk comprising a plurality of servo tracks defined by servo bursts;
a head;
and
control circuitry configured to:
position the head based on a first target radial location over the disk and generate a first burst correction value by reading at least one of the servo bursts;
position the head based on a second target radial location over the disk and generate a second burst correction value by reading at least one of the servo bursts;
position the head based on a third target radial location over the disk and write the first burst correction value and the second burst correction value at the third target radial location;
and
servo the head over the disk by reading the first and second burst correction values,
wherein the first, second and third target radial locations are different from one another.

7 more elements

Dependencies are inferred from the claim text.

Data storage device writing multiple burst correction values at the same radial location

Life of this patent

Data storage device writing multiple burst correction values at the same radial location

Life of this patent

Abstract

Claims22