Method and apparatus for outputting audio signal
US7298204B2 · kind B2 · utility
1Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2006 |
| Grant date | Nov 20, 2007 |
| Priority date | — |
| Expiry date | Oct 30, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/217
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and an apparatus for outputting an audio signal are provided. The apparatus includes a power source; a compensator for compensating an input signal by adding the input signal to an offset value reciprocally proportional to a source voltage; a pulse width modulator for modulating an audio signal transmitted from the compensator; and an output stage for outputting the modulated audio signal. Accordingly, audio quality can be improved directly for a listener by compensating the input signal damaged by periodical voltage drops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.