Apparatus for sensing magnetic fields from a wide range of magnetic media
US5633486A · kind A · utility
3Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 19, 1995 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | May 19, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/084
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus for reading magnetically stored data from a wide range of magnetic media. The apparatus includes a magnetoresistive MR head for producing a signal representative of stored magnetic data and a hysteresis comparator circuit for processing the signal from high concentration media. The MR head is preferably a paired MR head having a preamplifier circuit which provides the bias current for the PMR head, amplifies the signal produced by the PMR head, and provides rejection of common mode signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.