Back to results
US 7,649,704 B1Granted
Disk drive deferring refresh based on environmental conditions
AssigneeWestern Digital Technologies, Inc.
InventorsMarc A. Bombet, William B. Boyle
Life of this patent
Estimating the term…
Abstract
A disk drive is disclosed including a disk having a plurality of tracks, and a head actuated over the disk. A refresh monitor is maintained for refreshing data stored on the disk. A need for a refresh operation is detected when the refresh monitor exceeds a first threshold, wherein the refresh operation is deferred based on an environmental condition.
Claims23
A disk drive comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- and
- control circuitry operable to:
- maintain a refresh monitor operable to refresh data stored on the disk;
- and
- when the refresh monitor exceeds a first threshold:
- perform the refresh operation when an environmental condition falls within a predetermined range;
- and
- defer the refresh operation when the environmental condition is outside the predetermined range.
7 more elements
A method of operating a disk drive, the disk drive comprising a disk including a plurality of tracks, and a head actuated over the disk, the method comprising:
- maintaining a refresh monitor operable to refresh data stored on the disk;
- and
- when the refresh monitor exceeds a first threshold:
- performing the refresh operation when an environmental condition falls within a predetermined range;
- and
- deferring the refresh operation when the environmental condition is outside the predetermined range.
3 more elements
A disk drive comprising:
- a disk comprising a plurality of tracks;
- a head actuated over the disk;
- a means for maintaining a refresh monitor operable to refresh data stored on the disk;
- and
- when the refresh monitor exceeds a threshold:
- a means for performing the refresh operation when an environmental condition falls within a predetermined range;
- and
- a means for deferring the refresh operation when the environmental condition is outside the predetermined range.
5 more elements
Dependencies are inferred from the claim text.