Patent ID: 7636402

Claim:
A transmitter comprising: a data attribute generator for generating data attribute information based on a current enhanced mode map, the data attribute generator comprising a bit repeating and interleaving unit having a plurality of memory elements; a pre-processor for coding first and second supplemental data for error correction, interleaving the coded first and second supplemental data, and expanding the interleaved first and second supplemental data at first and second rates, respectively, according to the data attribute information; a first multiplexer for multiplexing main data with the first and second supplemental data expanded at the first and second rates, respectively, according to the data attribute information; and a processor for coding the data multiplexed by the first multiplexer for error correction, wherein values of the plurality of memory elements are initialized into attribute information corresponding to a next enhanced mode map when an enhanced mode is changed from the current enhanced mode map to the next enhanced mode map, wherein the bit repeating and interleaving unit has an input terminal, the plurality of memory elements are arranged in series, and the input terminal receives enhanced packet attribute information, and wherein the values of the plurality of memory elements are initialized before supplemental data corresponding to the next enhanced mode mare are interleaved by the pre-processor.