Ratio method for measurement of MR read head resistance
US6320713A · kind A · utility
11Cited by
7References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Sep 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reference current and resistance is used to determine a reference voltage. A variable current is then applied to the MR read head, and is adjusted to produce a voltage equal to that of the reference voltage. Then, the known current and voltage is used to determine the resistance of the MR read head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.