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:
Aug. 27, 2002
Filed:
May. 21, 1997
Applicant:
Inventors:
Shinichi Sato, Saitama-ken, JP;
Akira Shimizu, Saitama-ken, JP;
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H03G 9/00 ;
U.S. Cl.
CPC ...
H03G 9/00 ;
Abstract
Difference compensation circuits are connected to a volume controller having a tap in series. Each of the difference compensation circuit comprises a voltage control amplifier and an external CR network. The difference compensation circuits are arranged so as to independently attenuate a bass range and increase a mid-range in accordance with an amount of volume control by the volume controller.