Implementation of recycling unused ECC parity bits during flash memory programming
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United States of America Patent
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Feb 14, 2012
Grant Date -
Mar 4, 2010
app pub date -
Aug 26, 2008
filing date -
Aug 26, 2008
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Abstract
Methods for recycling unused error correction code (ECC) during flash memory programming, comprise generating ECC from user data to form a syndrome and storing the syndrome into volatile memory. ECC is re-encoded corresponding to the syndrome read from the memory with new user data. Re-encoding ECC comprises comparing new ECC with the most recent ECC of the previous syndrome, correcting a bit error in the new ECC, and indicating if the new ECC has failed.
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