Method and system for providing low cost robust operational control of video encoders
US7912123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2006 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Jan 11, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a simple low cost framework for robust operational control of video encoders. The framework comprises a two-layer architecture that effectively decouples the processes of video bit rate control and video quality/distortion control. The upper layer includes a video bit rate controller that operates on a single picture/picture-slice, or a set of pictures/picture-slices, and is based on feedback control techniques used in automatic control systems. The lower layer includes a video quality/distortion controller that operates at the level of blocks of pixels, and reduces distortion artifacts. The decoupled nature of the encoder control architecture of the present invention provides the flexibility of combining various feedback control algorithms and various distortion reduction schemes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.