Data storage device with spiral write mode hop mitigation
AssigneeWestern Digital Technologies, Inc.
InventorsTomoo Ozaki, Kei Yasuna, Guoxiao Guo
Life of this patent
Estimating the term…
Abstract
Various illustrative aspects are directed to a data storage device, method, and one or more processing devices that are configured to: apply a first set of settings to the assistive energy emitter in association with writing a first spiral to the disk surface; and apply a second set of settings to the assistive energy emitter in association with writing a second spiral to the disk surface, wherein the second set of settings is different than the first set of settings.
Claims20
A data storage device, comprising:
- one or more disks;
- an actuator mechanism configured to position a selected head among one or more heads proximate to a disk surface of a corresponding disk among the one or more disks, the selected head comprising a write element and an assistive energy emitter;
- and
- one or more processing devices, individually or in combination, configured to:
- apply a first set of settings to the assistive energy emitter in association with writing a first spiral servo pattern to the disk surface;
- and
- apply a second set of settings to the assistive energy emitter in association with writing a second spiral servo pattern to the disk surface, wherein the second set of settings is different than the first set of settings.
A method comprising:
- applying different respective sets of settings to an assistive energy emitter in a head of a disk drive in association with writing respective spiral servo patterns to a disk surface on a disk among one or more disks in the disk drive,
- wherein the respective spiral servo patterns are written to the disk surface using an inductive write coil in the head, and
- wherein the applying is performed by one or more processing devices individually or in combination.
One or more processing devices, individually or in combination, comprising:
- means for applying a first set of settings to an assistive energy emitter in a head of a disk drive in association with writing a first spiral servo pattern to a disk surface;
- and
- means for applying a second set of settings to the assistive energy emitter in association with writing a second spiral servo pattern to the disk surface, wherein the second set of settings is different than the first set of settings.
Dependencies are inferred from the claim text.