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Data storage devices and data processing methods

  • US 10,698,814 B2
  • Filed: 01/16/2019
  • Issued: 06/30/2020
  • Est. Priority Date: 01/19/2018
  • Status: Active Grant
First Claim
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1. A data storage device, comprising:

  • a memory device; and

    a memory controller, coupled to the memory device, configured to access the memory device and establish a physical to logical address mapping table and a logical address section table, wherein the physical to logical address mapping table comprises consecutive physical addresses and their corresponding logical addresses, wherein the logical address section table records statuses of a plurality of logical address sections, wherein one status corresponds to one logical address section and each status is utilized to indicate whether the physical to logical address mapping table records any logical address that belongs to the corresponding logical address section, and wherein the logical address section table comprises a plurality of section bits in a plurality of dimensions, so as to distinguish between different logical address sections, andwherein when the memory controller receives a write command to write data of a first predetermined logical address to the memory device, the memory controller is configured to determine the section bit of each dimension corresponding to the first predetermined logical address according to the first predetermined logical address, and accordingly set a corresponding digital value for each section bit.

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