Forward error correction at MPEG-2 transport stream layer
US6430159B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1998 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Dec 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/1515
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is for a system and method for performing forward error correction on an MPEG-2 transport stream that has optional error correction information embedded within the transport stream. An error correction operation is performed on a super group of packets within the transport stream. The error correction data is inserted into a created trailer group of MPEG-2 compliant transport stream packets having no payload, but only an adaptation field The trailer group packets are optional and therefore can be discarded by a standard MPEG-2 decoder, but can also be used to recover data lost in the transmission of the transport stream. The invention results in a system and method to correct an MPEG-2 transport stream that can be used in any one of the digital video broadcast (DVB) formats, without the need for error correction decoders which are specific to the DVB format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.