Research on REL Connecting with Application Scenarios in Education

Digital right management can be used on digital copyright protection, access to control, trust management and other areas. Right expression language is an important component of DRM system. The purpose of this paper is to research the application of REL in education.It gives the introduction of development of right expression language firstly, and describes in detail the development process of MPEG-21 REL used in popular,and discusses the frame structure of MPEG-21 REL.According to the special needs of learning object, this paper introduces MPEG-21 REL connecting with the concrete application scenarios in education, summarizes the advantages and disadvantages of MPEG-21 REL and analyzes what MPEG-21 REL needs to improve in future.Lastly, the conclusion is made and the develop trend of REL is forecasted.