Title:
Rotation detecting device
Document Type and Number:
Japanese Patent JP6245052
Kind Code:
B2
Abstract:
A rotation detection apparatus includes a signal detector and a determination circuit. The signal detector outputs a first signal and a second signal based on changes in respective resistance values of magnetoresistive element pairs. The first signal has a waveform corresponding to convexities and concavities of a rotor, while the second signal has a waveform differing in phase from the first signal. Upon receiving the first signal and second signal, the determination circuit compares each of the first signal and second signal against a binarization threshold value to generate a first binarized signal and a second binarized signal. The determination circuit permits output of the first binarized signal during one of a concavity period and a convexity period of the second binarized signal, and prohibits output of the first binarized signal during the other one of the concavity period and convexity period.
Inventors:
Atsushi Kobayashi
Takeji Kenji
Takeji Kenji
Application Number:
JP2014088970A
Publication Date:
December 13, 2017
Filing Date:
April 23, 2014
Export Citation:
Assignee:
株式会社デンソー
International Classes:
G01D5/245
Domestic Patent References:
| JP10332725A | ||||
| JP6416923A | ||||
| JP20088699A | ||||
| JP200958240A | ||||
| JP2007170922A | ||||
| JP10299558A | ||||
| JP2005221466A | ||||
| JP8105707A |
Attorney, Agent or Firm:
Patent Business Corporation Kaisei Patent Office