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:
Apr. 01, 2008
Filed:
Jun. 03, 2004
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yoshio Nakamura, Neyagawa, JP;
Masahide Onishi, Osaka, JP;
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yoshio Nakamura, Neyagawa, JP;
Masahide Onishi, Osaka, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The filter coefficients of an adaptive notch filter are sequentially updated to minimize an error signal based on the error signal and a first reference signal which is produced by subtracting a signal which represents the product of a sine corrective value Cand a reference sine signal, from a signal which represents the product of a cosine corrective value Cand a reference cosine signal. The filter coefficients of an adaptive notch filter are sequentially updated to minimize the error signal based on the error signal and a second reference signal which is produced by adding a signal which represents the product of the reference sine signal and the cosine corrective value Cand a signal which represents the product of the reference cosine signal and the sine corrective value Cto each other.