Quality feedback mechanism for bandwidth allocation in a switched digital video system
US8813144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6118
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided which is suitable for implementation in a switched digital video content-based network, wherein a head end obtains a first group of program streams and sends to a client only a subset of the program streams selected by subscribers in a neighborhood of the client. At least one of imminence and presence of a condition of inadequate bandwidth is determined. Responsive to the determining of the at least one of imminence and presence of the condition of inadequate bandwidth, a bit rate of at least one of the subset of the program streams selected by the subscribers in the neighborhood of the client is dynamically decreased by adjusting encoding thereof, while maintaining adequate quality for the at least one of the subset of the program streams selected by the subscribers in the neighborhood of the client, based on an objective quality measure, in order to address the at least one of imminence and presence of the condition of inadequate bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.