Video stream switching
US8209429B2 · kind B2 · utility
15Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2002 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Aug 5, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6437
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A client on a packet based network is provided with a stream of encoded video data. The system is maximizes the bit-rate of the video stream by adapting to fluctuations in network capacity. Adaptation of the bit-rate of the transmitted enclosed video data is timed to occur upon a scene change in the video sequence. In this way the interruption to the viewer when the perceived quality of the video sequence increases or decreases is minimized as it is ‘hidden’ in the scene change. The technique may be applied to hierarchically encoded video data and to other encoding technique which adapt to network conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.