System and method for managing transfer of rights using shared state variables
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United States of America Patent
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Aug 10, 2010
Grant Date -
Mar 17, 2005
app pub date -
Oct 4, 2004
filing date -
Jun 7, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A method, system and device for transferring rights adapted to be associated with items from a rights supplier to a rights consumer, including obtaining a set of rights associated with an item, the set of rights including meta-rights specifying derivable rights that can be derived from the meta-; determining whether the rights consumer is entitled to the derivable rights specified by the meta-rights; and deriving at least one right from the derivable rights, if the rights consumer is entitled to the derivable rights specified by the meta-rights, wherein the derived right includes at least one state variable based on the set of rights and used for determining a state of the derived right.
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