Video telephony
US6545697B1 · kind B1 · utility
32Cited by
1References
54Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Oct 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A user system uses a called number to establish a telephone call over a public telephone network to a called party. In response to the telephone call, the user system transfers a video call request to a server system over a public data network. The server system uses the called telephone number to check a database to determine if the called party is ready to receive video calls. If the called party is ready and accepts the video call, the server system exchanges video between the caller and called parties over the public data network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.