Ground loop noise rejection for a headset subsystem
US8452024B2 · kind B2 · utility
2Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2010 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2201/107
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
For headphone subsystems that employ common ground switches for speaker outputs (for example), there can be a significant issue with cross-talk and ground noise. Here, configurations for an amplifier and switch network are provided, which generally cancel noise from the “ground switch,” so as to provide an improvement over conventional configurations with little overhead. Additionally, the cross-talk for these configurations are not generally dependent on the “ground switch” or speaker impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.