Systems and methods for calibrating a read/write channel of a hard disk drive
US7551384B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2006 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Nov 21, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read/write channel for a hard disk drive comprising at least one analog read component and a fly height control system. The fly height control system controls fly height based on a current fly height value generated based on a fly height measurement signal that passes through the at least one analog read component. The read/write channel comprises a calibration signal generator and a processor. The calibration signal generator generates a calibration signal that is coupled to the at least analog read component to place the read/write channel in a calibration mode. The processor generates compensation data based on an output of the at least one analog read component when the read/write channel is in the calibration mode. The processor generates the current fly height value based on the fly height measurement signal and the compensation data when the read/write channel is in a fly height measurement mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.