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MEMORY SYSTEM

  • US 20140068149A1
  • Filed: 01/31/2013
  • Published: 03/06/2014
  • Est. Priority Date: 09/05/2012
  • Status: Active Grant
First Claim
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1. A memory system comprising:

  • a nonvolatile semiconductor storage device;

    a first storage module configured to store a plurality of management data to manage writing in or reading from the nonvolatile semiconductor storage device;

    a second storage module configured to store seed data to generate random number data;

    a controller configured to issue a first command to designate one of the management data stored in the first storage module, and to issue a second command to designate writing in or reading from the nonvolatile semiconductor storage device;

    a random number generating module configured to generate random number data by shuffling the seed data supplied from the second storage module based on the management data designated by the first command issued from the controller; and

    a randomizing module configured to randomize write data or read data based on the random number data generated by the random number generating module.

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