Robust digital communication system
AssigneeZenith Electronics Corporation
InventorsWayne E. Bretl, Richard W. Citta, Mark Fimoff
Life of this patent
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Abstract
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.
Claims9
1-61. (canceled)
A method of processing broadcast data, the method comprising:
- receiving a digital television (DTV) signal including first data multiplexed with second data;
- decoding the first and second data in the DTV signal for first error correction in order to correct errors in the first and second data that occurred during reception of the DTV signal;
- discarding the second data decoded for first error correction;
- decoding the first data for second error correction in order to additionally correct errors in the first data that occurred during the reception of the DTV signal;
- and,
- decoding the first data for third error correction in order to additionally correct errors in the first data that occurred during the reception of the DTV signal.
Dependencies are inferred from the claim text.