Method for dynamically optimizing bandwidth allocation in variable bitrate (multi-rate) conferences
US7492731B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2004 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Aug 9, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/2385
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method for dynamically optimizing bandwidth allocation in a variable bitrate conference environment. Conference means with two or more outputs are provided, where each one can output data at different rates, in order to support two or more endpoints which may have different media rates. Two or more endpoints are connected to these conference means for participating in the conference. Whenever more than one video rate is used by participants during the conference, each set of output rates is selected from all possible combinations of output rates in the conference means, wherein the lowest output rate in each selected set is the entry rate of the endpoint joining the conference at the lowest rate. A Quality Drop Coefficient (QDC) for each endpoint that joins the conference is determined for each selected set, wherein the QDC is computed according to the endpoint entry rate and the highest rate, among the output rates of each selected set, that is lower or equal to said endpoints' entry rate. A Quality Drop Value (QDV) is calculated for each of the selected sets, wherein, preferably, the set of output rates with the lowest QDV is determined as the optimal video rate set to select. Th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.