Encoding apparatus, decoding apparatus, encoding method and decoding method
US6636641B1 · kind B1 · utility
6Cited by
14References
70Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 10, 1999 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Dec 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/593
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
By combining a plurality of encoding methods actively, an encoding efficiency is enhanced. The first encoder encodes a result of determination whether a prediction error is zero or not. The second encoder encodes the prediction error unless the prediction error is zero. The third encoder encodes the prediction error regardless of whether the prediction error is zero or not. The mode determinator determines the encoding mode, and the encoding controller selectively operates the first encoder, the second encoder, and the third encoder according to the encoding mode determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.