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United States of America Patent
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Issued Date -
Aug 17, 2023
app pub date -
Apr 18, 2023
filing date -
Nov 2, 2020
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Abstract
A detecting unit generates detection signals corresponding to a plurality of ranges aligned in one direction along a moving direction of a detection body, based on a change in the magnetic field constantly received by a detecting element from the detection body. A signal processing unit acquires a detection signal from the detecting unit, compares the detection signal with a threshold value, and identifies a position of the detection body as a position of any one of a plurality of ranges based on a combination of a magnitude relationship between the detection signal and the threshold value. A detection body has a plurality of region portions corresponding to a plurality of ranges. The plurality of region portions are configured to be connected stepwise in the moving direction of the detection body within a plane of a detection surface facing the detecting unit of the detection body.
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