US 6,556,588 B2 · Forward error correction at MPEG-2 transport stream layer

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 sport 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.

Claims22

Dependent claims

A system for providing compressed video data, the system comprising:

a processor designed or configured to receive compressed video contained in data packets, and designed or configured to output a data stream comprising a super group including a predefined number of packets and a trailer group including a sufficient number of packets to accommodate error correction data obtained from forward correction of the compressed video data;
and
a transmitter designed or configured to transmit the super group and the trailer group, wherein the trailer group includes information identifying each trailer group packet as optional.

Dependencies are inferred from the claim text.

Forward error correction at MPEG-2 transport stream layer

Life of this patent

Forward error correction at MPEG-2 transport stream layer

Life of this patent

Abstract

Claims22