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:
Jul. 01, 2014
Filed:
Sep. 12, 2012
Takaaki Ohnari, Fuchu, JP;
Tomoyuki Kawasaki, Fuchu, JP;
Katsuhiko Sekiguchi, Tama, JP;
Shogo Miura, Tokyo, JP;
Masayuki Kawamata, Sendai, JP;
Takaaki Ohnari, Fuchu, JP;
Tomoyuki Kawasaki, Fuchu, JP;
Katsuhiko Sekiguchi, Tama, JP;
Shogo Miura, Tokyo, JP;
Masayuki Kawamata, Sendai, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Tohoku University, Miyagi, JP;
Abstract
A protection relay device includes: an analog-to-digital converter that samples an analog signal inputted from an analog input unit and converts the analog signal into digital data; a variable filter that filters and outputs the digital data, the variable filter having a filter coefficient that is varied by external control; and an adaptive controller that variably controls the filter coefficient of the variable filter so that a difference between the digital data filtered by the variable filter and a target signal decreases.