Magnetic detector having magnetoresistive elements
US4639807A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1983 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Mar 15, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3903
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A magnetic detector for detecting the angle, position speed of rotation of a rotating body or the rectinear position, distance or speed of a rectinearly moving body is used opposite to a magnetic recording medium. The magnetic detector includes a plurality of elongated stripe-shaped magnetoresistive elements juxtaposed on a non-magnetic substrate. Bridge output terminals are provided adjoining to first identical ends of the respective magnetoresistive elements in the longitudinal directions thereof while common terminals are disposed adjoining to second ends of the magnetoresistive elements. Either bridge output or common terminals extend round the outside of the magnetoresistive elements to positions adjacent to the common or bridge output terminals. Thus, the total width of the magnetoresistive elements pattern can be greatly reduced, thereby providing a magnetic detector of high performance in which the influence of fluctuations of gap or spacing between the magnetic detector and the magnetic recording medium used together therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.