Non-volatile memory with management of a pool of update memory blocks based on each block's activity and data order
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United States of America Patent
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Aug 10, 2010
Grant Date -
Mar 20, 2008
app pub date -
Sep 15, 2006
filing date -
Sep 15, 2006
priority date (Note) -
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Abstract
In a nonvolatile memory with block management system, data are written to blocks and are erasable block by block. At any time a pool of blocks are open for storing data concurrently. The number of blocks in the pool is limited. A replacement system allows new blocks to be introduced into the pool without exceeding the limit. In particular, different classes of blocks in the pool each has its own replacement rule, such as closing a least active block before being replaced. In this way, possible inefficiency and premature closure of blocks in the pool can be avoided.
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