Apparatus of layered picture coding, apparatus of picture decoding, methods of picture decoding, apparatus of recording for digital broadcasting signal, and apparatus of picture and audio decoding
US6801574B2 · kind B2 · utility
19Cited by
9References
1Claims
0Family size
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Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Jul 6, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video signal layering-encoding system has at least either a frequency distribution unit to judge a frequency distribution in an input video signal or a motion judgment unit to judge the motion of an input video signal. With this, encoding quantity control according to the characteristics of the input video signal can be performed between layers. Also, with selection of encode modes and sharing of a motion vector, the encoded data of a bidirectionally predicted frame can be reduced and the encoding efficiency of a high resolution signal can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.