Calibration circuit for voltage mode biasing of magnetoresistive heads
US7800854B1 · kind B1 · utility
4Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2007 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Nov 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for calibrating a magneto-resistive (MR) head includes a biasing circuit and a calibration module. The biasing circuit generates a first current to bias a first head during a calibration mode and a calibrated current to bias the MR head during an operating mode. The calibration module calibrates the first current during the calibration mode by adjusting the first current using nonlinear steps to determine the calibrated current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.