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:
Jan. 14, 2025
Filed:
Mar. 07, 2023
Hitachi, Ltd., Tokyo, JP;
Shinji Nakagawa, Tokyo, JP;
Soichiro Tanaka, Tokyo, JP;
Masato Kunitomo, Tokyo, JP;
Kazuaki Tokunaga, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A highly accurate feature extraction is performed on a signal with temporal variation in amplitude, and this signal is restored to detect a state of a transmission source (output source) of this signal to be normal or abnormal. A signal processing method includes: separating a signal X into an oscillation signal with a constant amplitude Xand a signal with temporal variation in amplitude X, the separating performed by a signal separator; performing processing of dimensionality reduction, compression, or the like, on the oscillation signal Xso as to extract a feature value (information) included in the oscillation signal X; and outputting a restored signal X' that is restored from the oscillation signal Xby performing processing inverse to the processing of dimensionality reduction, compression, or the like, based on the extracted feature value, performing the processing, the inverse processing, and the outputting performed by a signal Xrestorer.