Digital communication system for transmitting and receiving robustly encoded data

A method of processing received data comprising:

• receiving data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from inner and outer coding of first input data and two interleaving operations, wherein the reordered second data results from inner coding of second input data and one interleaving operation;
• inner decoding the received data to recover the normally ordered first data and the reordered second data;
• and,
• discarding the recovered normally ordered first data.

A system comprising:

• a receiver that receives data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from two interleaving operations, and wherein the reordered second data results from one interleaving operation;
• a decoder that decodes the received data to recover the normally ordered first data and the reordered second data;
• and,
• a data discarder downstream of the decoder that discards the recovered reordered second data.

A method of processing received data comprising:

• receiving data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from inner and outer coding of first input data and two interleaving operations, wherein the reordered second data results from inner coding of second input data and one interleaving operation;
• decoding the received data to recover the normally ordered first data and the reordered second data;
• and,
• upon a user selection, either reordering the recovered normally ordered first data and reordered second data and subsequently discarding the reordered normally ordered first data or discarding the recovered reordered second data and subsequently reordering the recovered normally ordered first data.

Apparatus comprising:

• an input arranged to provide an ATSC frame containing a plurality of ATSC segments, wherein at least some of the ATSC segments comprise outer coded data packed into Reed/Solomon blocks each containing robust VSB data and robust Reed/Solomon parity data between a non-outer coded ATSC transport header and non-outer coded ATSC Reed/Solomon parity data;
• a decoder arrangement arranged to decode the outer coded data without regard to the ATSC Reed/Solomon parity data to produce first decoded data including the robust Reed/Solomon parity data;
• and,
• a Reed/Solomon decoder arranged to decode the first decoded data in order to recover decoded robust VSB data.