Versatile circuit for interfacing with audio headsets
US7023983B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2003 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Apr 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/6058
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal conditioning circuit is described which can facilitate dual mode use of a connector circuit, e.g., audio mode or data mode. In other words, a headset or alternatively, a data interface may be coupled to the connector circuit and signal conditioning circuit, depending on the mode of the device. In accordance with this disclosure, the signal conditioning circuit operates in audio mode without the need for conventional blocking capacitors in the speaker channels. Moreover, in some embodiments, the signal conditioning circuit also provides backwards compatibility with conventional connector circuits that include such blocking capacitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.