Disc drive performance by reducing areal data storage density
US6445525B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1999 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jul 16, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for improving disc drive performance by reducing areal data storage density while maintaining data storage capacity. A total user data storage capacity is selected for a disc recording surface. A total number of user data fields is selected to meet the data storage capacity. The data fields are distributed among a plurality of concentric zones, each zone having a plurality of data tracks, each data track in each zone having a common number of data fields written at a first write frequency. The zones are defined in relation to a data density profile defining a desired data density relationship across the disc recording surface. A final write frequency is selected for each zone equal to or less than the first write frequency that will achieve the selected data storage capacity of each track in said zone, thereby reducing data density of at least selected tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.