Prevent nonvolatile memory from method and the controller thereof of interference occurring to read

Prevent nonvolatile memory from method and the controller thereof of interference occurring to read

  • CN 101,494,085 B
  • Filed: 01/22/2008
  • Issued: 09/30/2015
  • Est. Priority Date: 01/22/2008
  • Status: Active Grant
First Claim
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1. the method preventing nonvolatile memory from interference occurring to read, be applicable to a non-volatile memory storage device, it is characterized in that, this nonvolatile memory has most blocks, described block is at least divided into a data group and a group for subsequent use, and each block has most pagings, the method comprises:

  • Note down the number of times that in the described block of this data group, at least one first block is read;

    AndWhen the reading times of this first block is greater than a preset value, upgrade original stored data in this first block, and upgrade adjacent to stored data original at least one 3rd block of this first block,The step wherein " upgrading original stored data in this first block " comprises;

    Stored data original in this first block is read, and is temporary in a memory buffer of a controller of this non-volatile memory storage device;

    To erase this first block;

    Original stored data in this first block temporary in this memory buffer is written back to this first block;

    AndUpgrade the number of times that this first block is read.

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