In-vehicle handsfree telephone system
US7742792B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Jun 22, 2010 |
| Priority date | — |
| Expiry date | Apr 15, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In an in-vehicle handsfree telephone system, an in-vehicle handsfree device is capable of transferring a voice signal to a portable terminal in a passenger compartment of a vehicle. An operating state detection unit detects an operating state of the vehicle. The handsfree device is responsive to a user operation and selectively operable in one of a handsfree mode in which talking on the portable terminal through the handsfree device is allowed by the transfer of the voice signal and a portable terminal stand-alone mode in which talking on the portable terminal in isolation is allowed. The handsfree device is configured to have a switching restriction function in which the handsfree device restricts switching between the handsfree mode and the portable terminal stand-alone mode in accordance with a detected operating state of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.