Disk drive selecting TPI profile by estimating head geometry
US7688540B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2007 |
| Grant date | Mar 30, 2010 |
| Priority date | — |
| Expiry date | Dec 18, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a disk and a head actuated radially over the disk. The head is positioned over a first radial location, and a first data tracks per inch (TPI—1) is selected for data tracks recorded near the first radial location. The head is positioned over a second radial location, and a second data tracks per inch (TPI—2) is selected for data tracks recorded near the second radial location. The head is positioned over a third radial location, and a third data tracks per inch (TPI—3) is selected for data tracks recorded near the third radial location. A geometry of the head is estimated in response to TPI—1, TPI—2 and TPI—3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.