Partial MR sensor bias current during write
US5523898A · kind A · utility
19Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Nov 8, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetoresistive read/inductive write magnetic transducer, magnetic stability of the magnetoresistive read sensor is improved by reducing the bias current to the magnetoresistive read sensor to a predetermined value during a period when a write current signal is applied to the inductive write head. The reduced bias current is greater than zero, but less than that required for reading data stored in a magnetic storage media. The reduced bias current is about 30% of the full bias current applied during the read operation of the magnetoresistive head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.