Non-volatile memory and method with improved indexing for scratch pad and update blocks
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United States of America Patent
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Jun 10, 2008
Grant Date -
Jul 13, 2006
app pub date -
Jul 27, 2005
filing date -
Dec 16, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Update data to a non-volatile memory may be recorded in at least two interleaving streams such as either into an update block or a scratch pad block depending on a predetermined condition. The scratch pad block is used to buffered update data that are ultimately destined for the update block. In a preferred embodiment, an index of the data stored in the scratch pad block as well that stored in the update block is saved in an unused portion of the scratch pad block every time the scratch pad block is written to.
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