Rotation detecting apparatus

Details Rotation detecting apparatus Rotation detecting apparatus

2006-11-28

2006-11-28

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S252000, C073S514160, C073S514390

Reexamination Certificate

active

07141966

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.

REFERENCES:
patent: 5637995 (1997-06-01), Izawa et al.
patent: 6356073 (2002-03-01), Hamaoka et al.
patent: 2005/0015968 (2005-01-01), Shinjo et al.
patent: A-7-333236 (1995-12-01), None

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