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. 07, 2020
Filed:
Oct. 30, 2015
Pioneer Corporation, Bunkyo-ku, Tokyo, JP;
Manabu Nohara, Saitama, JP;
Akihiro Iseki, Saitama, JP;
PIONEER CORPORATION, Bunkyo-Ku, Tokyo, JP;
Abstract
The active noise control device detects noise, and delays a phase of a detected noise signal in a low frequency band. In a non-closed-type noise control device, since there occurs such a phenomenon that the phase of the noise signal advances in the low frequency band, the correction unit performs a correction to cancel the phase advance by delaying the phase. By outputting the noise reduction sound based on the phase-corrected noise signal, the noise is reduced.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile