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System for controlling the distribution and use of digital works having attached usage rights where the usage rights are defined by a usage rights grammar

  • US 5,715,403 A
  • Filed: 11/23/1994
  • Issued: 02/03/1998
  • Est. Priority Date: 11/23/1994
  • Status: Expired due to Term
First Claim
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1. A distribution system for distributing digital works, said digital works having one or more usage rights attached thereto, said distribution system comprising:

  • a grammar for creating instances of usage rights indicating a manner by which a possessor of an associated digital work is able to transport said associated digital work, and said grammar further specifies a default plurality of conditions for an instance of a usage right, wherein said one or more conditions must be satisfied before said usage right may be exercised;

    means for creating usage rights from said grammar;

    means for attaching created usage rights to a digital work;

    a requester repository for accessing digital works, said requesting repository having means for generating usage transactions, each said usage transactions specifying a usage right;

    a server repository for storing digital works with attached created usage rights, said server repository having means for processing usage transactions from said requester repository to determine if access to a digital work can be granted.

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