System and method for multicast stream failover
US6839865B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 29, 2000 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Dec 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/25
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for avoiding a single point of failure in the broadcast of streaming data. The system uses multiple redundant servers steaming the exactly same data to a failover device. The failover device buffers the steams into a primary and secondary data stream and automatically switches from the primary to the secondary data stream if it detects a corruption in the primary data stream. Since the buffered data packets of the two steams are identical and are synchronized, there is not outage for multicast receivers when the primary data source fails since there is a switch to exactly the same data in the next packet of the secondary data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.