Emergency call system using wireless, direct connect and telephone subsystems
US6870906B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 2, 2002 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Apr 10, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B25/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An emergency call system includes a data bus and bus controller operatively connected to the data bus for controlling data access on the data bus. The system can include at least one of wireless, direct connect and telephone subsystems. A wireless device module could be operatively connected to the data bus for receiving and passing alarm signals onto the data bus from a premises based wireless subsystem having at least one wireless receiver that receives wireless alarm signals from wireless pendants and other devices. The system could also include a direct connect module that receives and passes alarm signals onto the data bus from a premises based direct connect subsystem having wired stations and/or sensors. A telephone module could be operatively connected to the data bus for receiving alarm signals from a telephone of a residence through the telephone network and to the telephone module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.