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METHOD OF OPERATING STORAGE DEVICE TO RECOVER PERFORMANCE DEGRADATION DUE TO RETENTION CHARACTERISTIC AND METHOD OF OPERATING DATA PROCESSING SYSTEM INCLUDING THE SAME

  • US 20170147209A1
  • Filed: 10/12/2016
  • Published: 05/25/2017
  • Est. Priority Date: 11/20/2015
  • Status: Active Grant
First Claim
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1. A data recovery method for a storage device including a plurality of memory cells arranged in pages and blocks, each page including a row of memory cells, and each block including a plurality of pages of memory cells, the method comprising:

  • receiving by the storage device a first command corresponding to a first selected data recovery scheme; and

    based on the first command;

    applying a first target page scheme for performing error detection on the plurality of blocks;

    reading target pages using the first target page scheme, and detecting an amount of errors in each read target page;

    determining that a target page of a first block has at least a first threshold amount of errors, and based on the determination, performing data recovery for the first block by relocating all data stored in the first block to another block; and

    determining that no read page in a second block has at least the first threshold amount of errors, and as a result, maintaining the data stored in the second block.

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