Data storage and access systems

CAFC
  • US 7,334,720 B2
  • Filed: 01/19/2006
  • Issued: 02/26/2008
  • Est. Priority Date: 10/25/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of controlling access to content data on a data carrier, the data carrier comprising non-volatile data memory storing content memory and non-volatile parameter memory storing use status data and use rules, the method comprising:

  • receiving a data access request from a user for at least one content item of the content data stored in the non-volatile data memory;

    reading the use status data and use rules from the parameter memory that pertain to use of the at least one requested content item;

    evaluating the use status data using the use rules to determine whether access to the at least one requested content item stored in the content memory is permitted; and

    displaying to the user whether access is permitted for each of the at least one requested content item stored in the non-volatile data memory.

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