Multimedia coordination system
US6772335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jan 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/567
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a network, a media coordination system provides secure multimedia communication channels in a collaborative network environment. The media coordination system provides automatic encryption, dynamic interconnection of streams of data, and user interface elements that provide users with control over the ultimate destination of their audio and video data. The infrastructure of the system includes a plurality of client workstations that are connected to a central server using point-to-point network connections. The central server maintains a persistent virtual world of network places with objects located therein. Streams of audio and video data are coordinated between client workstations operating in the persistent virtual world by a key manager object using channels, transmitters, and receivers. The client workstations multicast their audio and video data over the network to defined recipients after receiving a multicast address and an encryption key for a specific multicast channel. In order to protect the privacy of all communications and the integrity of the coordination system, each client workstation retains significant control over distribution and reception of audio and vide…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.