Transmission error dissimulation in a digital signal with complexity distribution
US8607127B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2008 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Nov 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/0204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method of transmission error concealment in a digital signal split up into a plurality of successive frames associated with different time intervals in which, on reception, the signal might comprise erased frames and valid frames and in order to replace at least the first erased frame (N) after a valid frame, at least two steps are performed, a first step (E1) of preparation not producing any missing sample and comprising at least one analysis of a valid decoded signal and a second step (E2) of concealment producing the missing samples of the signal corresponding to said erased frame. The first step and the second step are executed in different time intervals.The invention relates also to a device of concealment implementing the method according to the invention as well as a decoder comprising such a device. The invention allows the distribution of the error concealment complexity on different time intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.