Storage device, electronic apparatus, and data access method

Storage device, electronic apparatus, and data access method

  • CN 103,914,410 B
  • Filed: 01/08/2013
  • Issued: 01/31/2020
  • Est. Priority Date: 01/08/2013
  • Status: Active Grant
First Claim
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1. , storage device included in electronic equipment, the storage device comprising:

  • a plurality of memory cells, each of the plurality of memory cells being of a th storage state and a second storage state, a th number of memory cells in the th storage state constituting a th storage region, a second number of memory cells in the second storage state constituting a second storage region, and a third number of memory cells in the th storage state or the second storage state constituting a third storage region, the third number being less than the th number and the second number, anda control unit for controlling each of the plurality of memory cells to transition between the th memory state and the second memory state,wherein the memory cells in the th storage state have a different storage capacity than the memory cells in the second storage state,wherein when the th storage state memory cell switches to the second storage state, copying the data stored in memory cells of the th storage state memory cell to the third storage area, converting the memory cells to memory cells in the second storage state, recovering the data copied to the third storage area back to the memory cells in the second storage state after the conversion, and repeating the steps until all of the th memory cells in the predetermined ratio are converted to memory cells in the second storage state,wherein when receiving a data storage instruction from the electronic device, the control unit determines to store a data block corresponding to the data storage instruction in the th storage area or the second storage area based on attribute information in the data block, the attribute information indicating a data size of the data block, and when the data size is larger than a predetermined threshold size, the control unit determines to store the data block in the second storage area.

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