Pop and click reduction using DAC power up and power down processing
US7254244B2 · kind B2 · utility
13Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2003 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Sep 28, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/348
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An audio amplifier generates an output to a load, in which a digital-to-analog converter drives the amplifier during powering up and powering down the amplifier. The digital-to-analog converter controls the amplifier to ramp the voltage at the output at a predetermined rate to reduce rapid voltage changes from being sent to the load during the powering up or powering down sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.