SOFT READ HANDLING OF READ NOISE
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United States of America Patent
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Issued Date -
Oct 15, 2015
app pub date -
Apr 10, 2014
filing date -
Apr 10, 2014
priority date (Note) -
Abandoned
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Abstract
Aspects of the disclosure pertain to methods and systems that are configured to handle excessive read noise in soft read systems. In an implementation, a method includes determining a number of unexpected patterns of a soft read of a memory cell after a soft decoding failure. The method also includes determining whether the number of unexpected patterns is greater than a threshold number of unexpected patterns. When it is determined that the number of unexpected patterns is greater than the threshold number of unexpected patterns, the method at least one of: performing at least one more soft read of the memory cell with a larger read voltage spacing than an initial read that produced the soft decoding failure; and discarding a result of one or more soft reads of the memory cell and utilizing a remainder of results of respective other soft reads of the memory.
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