Disk drive mapping entries of a defect list into clusters
US8116020B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Aug 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a first and second disk surfaces. A defect list is generated comprising a plurality of entries, wherein each entry comprises a track number comprising a defect. A first cluster across the first and second disk surfaces is identified, wherein a maximum data track number X1 in the first cluster on the first disk surface is less than a maximum data track number Y1 in the first cluster on the second disk surface. A second cluster across the first and second disk surfaces is identified, wherein a maximum data track number X2 in the second cluster on the first disk surface is less than a maximum data track number Y2 in the second cluster on the second disk surface. An entry from the defect list is selected in response to X1, and the entry of the defect list is mapped into the second cluster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.