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:
Feb. 24, 2015
Filed:
Dec. 20, 2012
Applicant:
Neofidelity, Inc., Seoul, KR;
Inventors:
Assignee:
Neofidelity, Inc., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 3/00 (2006.01); H04R 9/02 (2006.01); H04R 3/12 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 9/02 (2013.01); H04R 3/12 (2013.01); H04R 9/06 (2013.01); H04R 2227/003 (2013.01);
Abstract
A speaker with a built-in filter used for a digital amplifier is provided. The speaker with the built-in filter includes an inductor wound on an outer circumferential surface of a pillar passing through a magnet. The speaker in accordance with the present invention may be directly connected to the digital amplifier without an additional low pass filter interposed therebetween, enabling a smaller and lighter digital amplifier.