Cellular communications based intercom system and methods
US7304572B2 · kind B2 · utility
180Cited by
17References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2004 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Dec 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6332
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method in an intercom system including detecting the presence of a visitor at a visitor monitor, communicating (224) information received at the visitor monitor in association with the visitor detected to a remotely located communications network gateway, communicating (232) the presence of the visitor from the communication network gateway to a remote terminal, and forwarding the information received from the communications network gateway to the remote terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.