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DATA PROTECTION METHOD FOR POWER FAILURE AND CONTROLLER USING THE SAME

  • US 20090089484A1
  • Filed: 01/16/2008
  • Published: 04/02/2009
  • Est. Priority Date: 09/28/2007
  • Status: Active Grant
First Claim
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1. A data protection method, suitable for a plurality of physical blocks mapped to a logical block in a non-volatile memory, the data protection method comprising:

  • recording a data update information in each of the physical blocks, wherein the data update information is used for identifying an update relationship of the physical blocks; and

    re-establishing the update relationship of the physical blocks according to the data update information,wherein the data update information comprises a plurality of words having a circular relationship, and the number of the words is greater than the number of the physical blocks,wherein the data update information is sequentially recorded in each of the physical blocks according to the update relationship and the circular relationship.

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