Method and device for recovering erroneous data
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United States of America Patent
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Mar 8, 2016
Grant Date -
Mar 5, 2015
app pub date -
Sep 30, 2014
filing date -
Aug 28, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for recovering erroneous data is disclosed, the method includes: when data in a storage block that is included in a solid state disk (SSD) is read, performing a first error check on data on a certain page of the storage block to acquire erroneous data on the page; if a first number of pieces of the erroneous data on the page is smaller than or equal to a preset first threshold, performing an error checking and correction (ECC) recovery on the data on the page; and if the first number is greater than the preset first threshold, acquiring data from spare space according to a storage position of the erroneous data on the page and a fixed entry corresponding to the storage block, and replacing the erroneous data on the page with the acquired data, where the fixed entry includes a storage position of each data stored in the spare space.
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