Dynamic forward error correction algorithm for internet telephone
US6167060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1997 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Aug 8, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An Internet telephone system architecture having low latency and permitting voice communication between telephones and computers is disclosed. The architecture permits dynamic packet-to-packet change in various factors to adjust for Internet conditions. A forward error correction algorithm provides a variable level of redundancy from zero to three in the transmission of data packets. The level of error correction redundancy, the codec selection and other factors, are dynamically changeable by a voice port to replace lost packets without interpolation and to thereby maintain the highest voice quality and data compression ratio that is consistent with the quantity of packet loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.