Wireless headset having improved RF immunity to RF electromagnetic interference produced from a mobile wireless communications device
US7515944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2005 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | Apr 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless headset has improved immunity to RF electromagnetic interference produced from wireless communications devices. A headset body is adapted to be worn by a user and includes a microphone and earpiece. An antenna receives wireless communication signals and passes them to RF and audio circuitry mounted within the headset body. The RF and audio circuitry include a Bluetooth module operatively connected to the antenna for transmitting and receiving wireless communication signals, an audio CODEC connected to the Bluetooth module, and audio connection lines connected between the CODEC and the earpiece and between the CODEC and the microphone. A filter is connected into each of the audio connection lines at the earpiece and microphone and operative for reducing the RF coupling from a mobile wireless communications device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.