Bandwidth determination for multiple layer digital video
US7082221B1 · kind B1 · utility
37Cited by
5References
15Claims
0Family size
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Key dates
| Filing date | Sep 29, 2000 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Apr 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an encoding process, video data are represented as a bitstream of quantized base data and enhancement data, which capture the difference between a quantized base video picture and an original unquantized input video picture. Due to bandwidth constraints on a communication channel, it may be unfeasible to transmit all enhancement data. During the encoding process, the enhancement data may be divided into “layers” based upon bandwidth restrictions. Following transmission, the layers are recombined and are added to the base data by a decoder, producing a viewable video sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.