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:
Jun. 08, 1999
Filed:
May. 16, 1997
Kazushige Aoki, Kanagawa, JP;
Tutomu Hamabe, Kanagawa, JP;
Shigeki Satoh, Kanagawa, JP;
Yousuke Akatu, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
In apparatus and method for actively reducing a periodic vibration and/or noise, a divergence determinator is provided in which a presence or absence of a higher order divergence of a control of the reduction of the periodic vibration and/or noise is determined on the basis of a sum of two sampled values of at least one of either a drive signal y or a residual wave (vibration or noise) signal e, phases of the two sampled values being mutually deviated from each other by an approximately half period of a fundamental order of the corresponding drive or residual wave signal.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile