Embedded speaker protection for automotive audio power amplifier
US9800221B2 · kind B2 · utility
1Cited by
10References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 18, 2016 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Nov 18, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit can be used in a speaker system. The circuit includes an amplifier with an output configured to be coupled to a speaker. An offset comparator has an input coupled the output of the amplifier and is configured to provide an offset control signal. A digital circuit has a first input coupled to an output of the offset comparator, a second input configured to receive an amplifier control signal, a third input configured to receive a play control signal, and an output configured to provide a forced mute signal that can be used to control the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.