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:
Sep. 19, 2017
Filed:
Apr. 23, 2013
Mitsubishi Electric Corporation, Tokyo, JP;
Takafumi Hara, Tokyo, JP;
Yuji Kawano, Tokyo, JP;
Mitsubishi Electric Corporation, Chiyoda-ku, Tokyo, JP;
Abstract
A magnetized scale () in which magnetic pole pairs each formed of a first magnetic portion () and a second magnetic portion () having different magnetic properties are arranged with a period of a magnetic pole pair width 2λ, and a magnetosensitive device () in which n magnetosensitive elements (to) are arranged with a magnetosensitive element pitch P so that λ=nP may be established are arranged so as to be opposed to each other with a predetermined air gap therebetween. Output values output from the n magnetosensitive elements (to) in parallel are analyzed to calculate a relative position between the magnetosensitive device () and the magnetized scale () as a position detection resolution of λ/n.