Position detecting circuit and apparatus using the same

Details Position detecting circuit and apparatus using the same Position detecting circuit and apparatus using the same

2008-01-24

2009-10-06

Dunn, Drew A (Department: 2863)

Data processing: measuring, calibrating, or testing

Calibration or correction system

Position measurement

Reexamination Certificate

active

07599810

ABSTRACT:
A position detecting circuit including: a plurality of magnetic field detecting devices discretely disposed for outputting a signal corresponding to a magnetic field strength produced by an oppositely disposed magnetic field generation means; a correction parameter arithmetic section for computing correction parameters for bringing to a predetermined constant value a sum of output from one of the magnetic field detecting devices and an output from another of the magnetic field detecting devices; and a position arithmetic section for computing and outputting a relative position between the magnetic field generation means and the magnetic field detecting devices based on an output difference the between the output from the one magnetic field detecting device and output from the another magnetic field detecting device and the correction parameters.

REFERENCES:
patent: 7132824 (2006-11-01), Masuda et al.
patent: 07181557 (1995-07-01), None

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