Priority assignment and signaling of scalable video in a switch based system
US9001701B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Dec 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N7/152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for assignment and signaling of the priority information within the scalable video bitstream in a switch-based conferencing system are provided. The assignment of the priority across layers is made that achieves improved user experiences in common use cases, and a signaling scheme is provided that allows the server to efficiently forward the bitstream to each receiver according to its service request and downlink conditions. The impact of uplink bandwidth changes is considered intelligently so that the server can run with very low cost/high capacity, which is important to cloud-based services. Bit fields are defined in the Real-Time Protocol (RTP) extension headers to carry the priority information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.