Adaptive wear levelling
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United States of America Patent
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May 7, 2019
Grant Date -
Feb 1, 2018
app pub date -
Oct 21, 2016
filing date -
Jul 29, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A device that provides for adaptive wear levelling includes at least one processor. The at least one processor utilizes sets of blocks of flash memory circuits for data storage operations, each set of blocks including a block from each flash memory circuit and at least some of the blocks being marked active for the data storage operations. The at least one processor monitors a quality metric of each block while the blocks marked active are utilized for data storage operations. The at least one processor determines when the quality metric of a block falls below a minimum level and marks the block as temporarily inactive, where the block is not utilized for the data storage operations while marked temporarily inactive. The at least one processor, when a criterion is satisfied, marks the block as active so that the block can again be utilized for the data storage operations.
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