The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 27, 2019
Filed:
Jul. 12, 2017
Hiroyuki Kubota, Kanagawa, JP;
Akihisa Mikawa, Kanagawa, JP;
Hiroyuki Kubota, Kanagawa, JP;
Akihisa Mikawa, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A position detection system includes a magnetic field generation unit to generate a magnetic field, a magnetic field detection unit to detect a magnetic flux density of the magnetic field effecting from the magnetic field generation unit, and to output a detection voltage corresponding to the detected magnetic flux density, and circuitry to amplify the detection voltage, set a reference voltage for amplifying the detection voltage, and an amplification level of the detection voltage based on at least one of a voltage input to the magnetic field detection unit and a gain value set for the amplification of the detection voltage or both of the voltage input to the magnetic field detection unit and the gain value set for the amplification of the detection voltage, and change the reference voltage to switch a region used for detecting a position of a movable member.