Burst error correction on CD data
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United States of America Patent
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Jun 29, 2004
Grant Date -
N/A
app pub date -
Jul 31, 2000
filing date -
Jul 31, 2000
priority date (Note) -
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Abstract
Method and system for incdicating that at least one C2 codeword or C1 codeword of a CD data block has an uncorrectable number of errors, by marking or flagging the corrupted symbols of a codeword with defect signals. When a C1 codeword (or C2 codeword) of the data block is found to contain more than a threshold number of errors, a selected number w of distinguishable symbol values (DSVs) is associated with at least one C1 codeword (or with at least one C2 codeword) of the block. When the block is further processed and the presence of more than a threshold number of DSVs is sensed, the system interprets this occurrence as indicating that an uncorrectable group of errors has occurred in a C1 codeword and/or in a C2 codeword of the block.
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