Paper Info
Title
Interoperability between ODRL and MPEG-21 REL
Abstract
Two main Rights Expression Languages (RELs) exist to describe licenses governing the access to digital content: ODRL (Open Digital Rights Language) and MPEG-21 REL. Both RELs are powerful and complex enough. The use of different RELs could divide the network commerce in two separate factions. In this paper we propose a way for interoperability between them. They have many similarities that permit to translate expressions from one language into the other one. In the Distributed Multimedia Applications Group (DMAG) (12) we are developing utilities that permit to translate licenses between both RELs. Furthermore, the DMAG has developed a set of applications to generate and check licenses in both RELs. This paper first describes the current situation of the RELs. Then the MPEG-21 REL and ODRL are introduced. Later, the interoperability between ODRL and MPEG-21 REL is exposed and the DMAG licenses generator and checker are described1. 1 Rights Expression Languages At present, network commerce of multimedia content is based on the trade of rights, but one of the limitations of Digital Rights Management (DRM) technology is due to the deficiency of means to express in an unambiguous, precise, machine-readable way the complex permissions on content. Furthermore it is not possible to create business relationships with distributors based on machine-readable licenses that can be automated to a significant degree. Consequently, today's business models have limited attraction to consumers and providers. It is necessary to have a process by which the rights can be expressed in machine-readable licenses, guaranteed to be unambiguous and secure. A Rights Expression Language (REL) is the key to technical interoperability between proprietary DRM systems.
Year
Venue
Keywords
2004
ODRL Workshop
business relationship,business model
Field
DocType
Citations 
World Wide Web,MPEG-21,Expression (mathematics),Interoperability,Rights Expression Language,Computer science,Digital rights,Business model,Digital content,Digital rights management
Conference
9
PageRank 
References 
Authors
0.88
5
3
Name
Order
Citations
PageRank
Josep Polo1142.61
Jose Prados2214.57
Jaime Delgado38215.13