Telephone system and method for selectively ringing one or more land phones or portable phones based on the self-detected geographical position of a portable phone
US6999757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2001 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Dec 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2250/10
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable phone is equipped with a position detector that detects the geographical position of the portable phone, and a telephone system may ring one or more land-based phones or portable phones according to the geographical position of the portable phone. One or more geographical regions are defined, with corresponding telephone parameters defined for each region. When a portable phone enters a defined region, exits a defined region, or changes between two defined regions, the function of one or more land-based phones or portable phones may change. The preferred embodiments thus allow changing the function of one or more other phones based on the self-detected geographical position of a portable phone. In this manner the convenience of using portable phones is greatly enhanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.