System and method for presence alarming
US7848760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2003 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/02
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A telecommunications system includes a wireless device (150) including a positioning controller (504) and a communications controller (502), said wireless device adapted to cause an audible warning to be generated if said wireless device is determined to be outside a first predetermined range; and an administrative device (30-152) for receiving alerts from said wireless communication device via said communications controller when said positioning controller determines that said wireless device is outside said first predetermined range for longer than a predetermined period or is outside said first predetermined range and a second predetermined range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.