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Information recording device, information playback device, information recording method, information playback method, information recording medium, and program providing medium

  • US 20020112197A1
  • Filed: 10/19/2001
  • Published: 08/15/2002
  • Est. Priority Date: 10/20/2000
  • Status: Active Grant
First Claim
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1. An information recording device for executing processing which records actual data in each actual data part of data storage means and records redundant data which corresponds to the actual data in each redundant part of said data storage means which corresponds to the actual data part, wherein:

  • said information recording device comprises a memory interface unit for accessing said data storage means, and a control unit for controlling said memory interface unit; and

    said memory interface unit includes a cryptosystem unit and said cryptosystem unit executes processing in which an integrity check value based on actual data to be stored in the actual data part is generated in response to a data-writing command from said control unit to said data storage means, and is stored in the redundant part.

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