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. 17, 2012
Filed:
Dec. 03, 2007
Kosuke Sakamoto, Utsunomiya, JP;
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yasunori Kobayashi, Utsunomiya, JP;
Kenji Yamagata, Kawagoe, JP;
Shinji Fukumoto, Kawagoe, JP;
Kosuke Sakamoto, Utsunomiya, JP;
Toshio Inoue, Tochigi-ken, JP;
Akira Takahashi, Tochigi-ken, JP;
Yasunori Kobayashi, Utsunomiya, JP;
Kenji Yamagata, Kawagoe, JP;
Shinji Fukumoto, Kawagoe, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
When the frequency of an engine rotation signal reaches a predetermined frequency, a comparator of a switching unit outputs a switching control signal to selectors and a filter coefficient updater. Based on the switching control signal, the selector switches from a connection between one memory and a corrector to a connection between another memory and the corrector, thereby changing the transfer characteristics C^rr of the corrector from C^11 to C^10. Based on the switching control signal, the selector switches from a connection between one ADC and a filter coefficient updater to the connection between another ADC and the filter coefficient updater, thereby supplying the filter coefficient updater with an error signal, rather than an error signal.