Digital signal coding and decoding methods and apparatuses and programs therefor
US7200561B2 · kind B2 · utility
57Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2002 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Feb 9, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/895
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences are arranged inversely to their arrangement at the coder side to reconstruct sample sequences. When a packet dropout occurs, a missing information compensating part 430 correct the reconstructed sample sequences in a manner to reduce an error between the spectral envelope of the reconstructed sample sequence concerned and a known spectral envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.