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:
Mar. 02, 2010
Filed:
Apr. 25, 2007
Kentarou Shin, Yokohama, JP;
Yasuaki Hayami, Yokosuka, JP;
Kraisorn Throngnumchai, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Abstract
A controller and method changing a frequency of a control (or carrier) signal in accordance with a waveform that periodically changes within a first frequency range from a frequency fcto a frequency fc, where the frequency fcis smaller than the frequency fc, and a second frequency range from a frequency fcto a frequency fc, where the frequency fcis smaller than the frequency fc. The frequencies fcand fcsatisfy the inequalities (n−1)·fc≦n·fcand n·fc≦(n+1)·fcand/or satisfy an approximate expression n·fc≈(n+1)·fcwhere n is an integer. The frequencies fcand fcsatisfy the inequalities n·fc≦fs−Δfs and fs+Δfs≦n·fcwhere fs±Δfs represents a predetermined frequency band.