System and method for fast start-up of live multicast streams transmitted over a packet network
US7870590B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2004 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Oct 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2854
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for multicast streaming of programs over a packet network includes a node having a processor that conditions a video bitstream such that packets containing an I-frame are located near program specific information (PSI) packets, the processor marking a random join point (RJP) in the video bitstream immediately preceding the I-frame and PSI packets, the node outputting the conditioned and marked video bitstream across the packet network. An edge device of the network includes a buffer that caches packets of the conditioned and marked video bitstream video starting at the RJP, and sends the cached packets to a client receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.