Magnetic-Field Direction Measuring Apparatus, Rotation Angle Measuring Apparatus, and Magnetic-Field Measuring Apparatus
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United States of America Patent
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Issued Date -
Sep 26, 2013
app pub date -
Mar 18, 2013
filing date -
Mar 22, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The magnetic-field direction measuring apparatus includes a substantially rectangular rotation angle measuring chip, and a first magnetic field sensor and a second magnetic field sensor disposed substantially on a circumference centered around a predetermined point on a surface of the rotation angle measuring chip serving as a circle center point, the first magnetic field sensor detecting a magnetic component in a first direction, the second magnetic field sensor detecting a magnetic component in a second direction different from the first direction. The first magnetic field sensor and the second magnetic field sensor are positioned line-symmetrically with respect to a straight line on the surface of the substrate which is parallel to a longitudinal direction of the rotation angle measuring chip or a transverse direction of the rotation angle measuring chip and which serves as an axis of symmetry.
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