Non-volatile memory and method with multi-stream update tracking
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United States of America Patent
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Apr 29, 2008
Grant Date -
Jul 13, 2006
app pub date -
Jul 27, 2005
filing date -
Dec 16, 2004
priority date (Note) -
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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. Synchronization information about the order recording of updates among the streams is saved with at least one of the streams. This will allow the most recently written version of data that may exist on multiple memory blocks to be identified. In one embodiment, the synchronization information is saved in a first block and is a write pointer that points to the next recording location in a second block. In another embodiment, the synchronization information is a time stamp.
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