Methods and apparatus for writing data to non-volatile memory
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United States of America Patent
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Feb 26, 2013
Grant Date -
Jun 26, 2008
app pub date -
Mar 4, 2008
filing date -
Sep 28, 2001
priority date (Note) -
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Abstract
Methods and apparatus for writing data to non-volatile memory include maintaining one or more lists of obsolete blocks of the non-volatile memory and limiting the lists to a predetermined value. If a write operation would result in a list exceeding its predetermined value, a block erase operation is performed on one of the obsolete blocks. Valid data contained in an obsolete block selected for erasure is relocated prior to erasure.
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