| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide technique suitable for the change of error correction capability. <P>SOLUTION: Blocks B1-1 to B3-4 are hierarchical blocks to be defined by multiple hierarchies. Multiple data packets D0-D23 belong to the same block B1-1 of a first layer. A forward error correction (FEC) packet F1-1 corresponding to the block B1-1 of the first layer is generated. Besides, FEC packets F2-1/F3-1/F3-2 equal to the exclusive OR of data packets D0-D11/D0-D5/D12-D17 belonging to the blocks B2-1/B3-1/B3-3 are generated concerning the blocks B2-1/B3-1/B3-3 of the hierarchies other than the specified blocks B2-2/B3-2/B3-4 among the two or more blocks of the hierarchies included in the same blocks B1-1/B2-1/B2-2 of the next upper hierarchies in the respective hierarchies continuing to the first layer. The data packets D0-D23 and the FEC packets F3-1, F2-1, F3-2, and F1-1 are transmitted. <P>COPYRIGHT: (C)2012,JPO&INPIT |
