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:
Dec. 16, 2008
Filed:
Oct. 01, 2004
Takashige Miyashita, Kyoto, JP;
Takashige Miyashita, Kyoto, JP;
Rohm Co., Ltd., , JP;
Abstract
A low-frequency eliminating unit outputs a signal derived from attenuating the extreme bass range in an input audio signal, so as to reduce bass distortion. A high-frequency retrieving unit retrieves, from the signal output from the low-frequency eliminating unit, signal components at frequencies higher than the marginal frequency. A front low-pass filter and a back low-pass filter retrieve, from the signal output from the low-frequency eliminating unit, components other than the signal retrieved by the high-frequency retrieving unit. An amplifying unit amplifies a signal output from the low-frequency retrieving unit. A synthesizing unit synthesizes a signal output from the high-frequency retrieving unit and a signal output from the amplifying unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile