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Data storage device and data maintenance method thereof

  • US 9,996,462 B1
  • Filed: 07/28/2017
  • Issued: 06/12/2018
  • Est. Priority Date: 12/14/2016
  • Status: Active Grant
First Claim
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1. A data storage device, comprising:

  • a flash memory, having a plurality of blocks, wherein each of the blocks has a plurality of pages arranged sequentially along a first direction; and

    a controller, determining whether an X-th page of a temporary block of the blocks can be successfully read when the data storage device resumes operation after a power-off event, and writing dummy data and a temporary-block table into the (X+1)-th page of the temporary block when the X-th page can be successfully read, wherein the X-th page is the page that was read last from the temporary block before the power-off event occurred, the temporary-block table records the information of all the pages in the temporary block, and X is a positive integer.

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