Normally ordered robust VSB data are reordered in accordance with a first
interleave to produce reordered robust VSB data, The reordered robust VSB data
and ATSC data are reordered in accordance with a second interleave to produce normally
ordered robust VSB data and reordered ATSC data. The normally ordered robust VSB
data and reordered ATSC data are time multiplexed for transmission to a receiver.
The receiver discards the reordered ATSC data or the normally ordered robust VSB
data depending upon receiver type or user selection. A robust VSB receiver is able
to process the normally ordered robust VSB data upstream of an outer decoder without
an interleave thereby avoiding the delay associated with an interleave.