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Data processing device, data storage device, data processing method, and program providing medium for storing content protected under high security management

  • US 6,834,333 B2
  • Filed: 10/18/2001
  • Issued: 12/21/2004
  • Est. Priority Date: 10/20/2000
  • Status: Expired due to Fees
First Claim
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1. A data processing device comprising:

  • a data storage means for storing a revocation list and an access permission table stored in media;

    a memory interface unit for accessing said data storage means; and

    a control unit for controlling said memory interface unit;

    wherein;

    the revocation list includes content playback information;

    the access permission table which is stored in a data storage area in said data storage means is set in said memory interface unit; and

    in response to an access command to access said data storage means, which is issued by said control unit, said memory interface unit determines, by referring to the revocation list and the access permission table, whether or not to execute the access command, whereby processing which is set executable by the access permission table is only executed.

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