Rotation detecting apparatus
US7141966B2 · kind B2 · utility
7Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2005 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 28, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D5/147
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Rotation detecting apparatus for detecting rotation of a magnetic rotor includes: a sensor chip having a magnetoresistive device; and a bias magnet. The magnetoresistive device is capable of detecting change of a magnetic vector near the sensor chip so that the rotation detecting apparatus detects the rotation of the magnetic rotor. The change of the magnetic vector is generated by the bias magnetic field and the rotation of the magnetic rotor. The bias magnet is disposed around the sensor chip so that a deflection angle of the magnetic vector is controllable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.