Control of a loudspeaker output
US8817995B2 · kind B2 · utility
10Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Dec 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of controlling a loudspeaker of an electronic device provides voice coil temperature protection. When a power supply for the electronic device is first activated, a binding step is performed in which the loudspeaker impedance is determined and a temperature (such as ambient temperature) is accurately measured. These binding step measurements are used during subsequent use of the loudspeaker, to make the temperature measurements (based on voice coil impedance) as accurate as possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.