System and method for generating a defect map for a data-storage medium without the use of a hard index
US6557125B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1999 |
| Grant date | Apr 29, 2003 |
| Priority date | — |
| Expiry date | Dec 10, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A defect map for a data-storage medium is generated without the use of a hard index on the medium. The servo sectors normally written to the medium during formatting operations are utilized to identify the angular positions of defective data sectors. The track-location data typically stored in each data sector is used to identify the radial positions of defective sectors. This positional information is processed by a set of computer-executable instructions that generate a graphical representation of the data-storage medium. Symbols are placed on the graphical representation in positions corresponding to the locations on the medium at which defective data sectors are identified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.