Distributed cabin interphone system for a vehicle
US8345663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2008 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Oct 5, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1069
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In one aspect, cabin interphone handsets and passenger announcement speakers in the cabin of a vehicle communicate over an internet protocol data network. Each handset of the system has an internet protocol presence and each passenger announcement speaker of the system has an internet protocol presence. Each handset includes announcement and call management functions so that each handset can communicate with one or more handsets over the network as well as make passenger announcements via one or more passenger announcement speakers. The call setup function and PA function may utilize voice over internet protocol. In another aspect, methods are provided for making interphone calls and passenger announcements using the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.