Digital work structure
AssigneeContentGuard Holdings, Inc.
InventorsMark J. Stefik, Peter L.T. Pirolli
Life of this patent
Estimating the term…
Abstract
A digital work for use within a rights management system for controlling use of the digital work in accordance with usage rights. The work is organized into an acyclic structure and includes a contents file including information related to content that can be interpreted by an interpreter, and a description tree file including descriptor blocks organized in a hierarchical manner. At least some of the descriptor blocks contain usage rights associated with the content. The usage rights specify a manner of use for the content.
Claims45
A digital work organized into an acyclic structure for use within a system for enforcing usage rights associated with content, said digital work comprising:
- a contents file including information related to content that can be interpreted by an interpreter;
- and
- a description tree file including descriptor blocks organized in a hierarchical manner, at least some of said descriptor blocks containing usage rights associated with the content, said usage rights specifying a manner of use for the content.
A data structure for specifying usage rights that can be associated with content for use within a system for enforcing use of the content in accordance with the usage rights, said data structure comprising:
- a description tree file including descriptor blocks organized in a hierarchical manner, at least some of said descriptor blocks containing usage rights associated with the content, said usage rights specifying a manner of use for the content, at least one of said descriptor block comprises a unique identifier of content and a rights portion comprising a rights code field containing a code indicative of a manner of use of the digital content and a status information field containing information relating to a state of the manner of use.
A data structure for specifying usage rights that can be associated with content for use within a system for enforcing use of the content in accordance with the usage rights, said data structure including a usage rights portion, said usage rights portion comprising:
- a transactional component including a specification of said manner of use for the associated digital content;
- and a specifications component specifying conditions that must be satisfied to exercise the manner of use or transaction related parameters.
Dependencies are inferred from the claim text.