Method and system for managing block reclaim operations in a multi-layer memory
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United States of America Patent
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May 24, 2016
Grant Date -
Jul 3, 2014
app pub date -
Mar 14, 2013
filing date -
Dec 31, 2012
priority date (Note) -
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Abstract
A multi-later memory and method for operation is disclosed. The memory includes at least one flash memory die having multiple layers and a controller configured to execute block reclaim operations in a layer of the flash memory die until a net gain of at least one additional free block has been made in the layer. The method may include relocating data from reclaim blocks to relocation blocks within the same layer, or within a same partition in the same layer until a net gain of one free block has been achieved and an integer number of relocation blocks has been filled with relocated data. The method may also include moving data from reclaim blocks in a first layer into destination blocks in a second layer until a net gain of at least one free block has been achieved in the first layer.
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