Methods and system for detecting DC output levels in an audio system
US7701194B2 · kind B2 · utility
0Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Jan 31, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/375
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for detecting a direct current (DC) component of a pulse-width modulated (PWM) signal includes a modulator configured to provide at least one PWM signal to an input of an amplifier. A DC detector is configured to detect a DC component of a selected one of the at least one PWM signal as a function of a switching frequency of the selected PWM signal. The DC detector provides at least one report signal that indicates a level of the DC component of the selected PWM signal relative to a predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.