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:
Oct. 06, 2026
Filed:
Dec. 19, 2022
Mitsubishi Electric Corporation, Tokyo, JP;
Takatsugu Sawai, Tokyo, JP;
Akihiko Higuchi, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
Detection coils generate a positive or negative voltage pulse. Every time a voltage pulse is generated, a controller operates upon receipt of electric power of the voltage pulse, obtains states of the detection coils, information on the detection coil that has generated the voltage pulse, and the number of rotations of a rotation shaft, and updates a non-volatile memory. During the update, by referring to information on a current voltage pulse, and states of the detection coil in generation of the last voltage pulse and the last but one voltage pulse, and a history of information on the detection coil that has generated the last but one voltage pulse, which are held in the non-volatile memory, the controller detects a pulse dropout and corrects the states of the detection coils and the number of rotations held in the non-volatile memory.