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. 08, 2014
Filed:
Sep. 28, 2011
Applicants:
Lars Risbo, Hvalsoe, DK;
Milind Anil Borkar, Dallas, TX (US);
Theis Buchwald Christiansen, Kobenhavn N, DK;
Inventors:
Lars Risbo, Hvalsoe, DK;
Milind Anil Borkar, Dallas, TX (US);
Theis Buchwald Christiansen, Kobenhavn N, DK;
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
H03G 11/00 (2006.01); H04R 3/00 (2006.01);
U.S. Cl.
CPC ...
H03G 11/008 (2013.01); H04R 2499/15 (2013.01); H04R 3/007 (2013.01);
Abstract
In an embodiment of the invention, the voice coil of an electro dynamic transducer is protected against thermal overload by estimating the temperature of a magnet in the electro dynamic transducer. When a power limit based on the temperature of the magnet and on a predetermined voice coil temperature limit is reached by an audio signal, the power applied to the voice coil is reduced.