Interlock System for DRM Interoperability of Streaming Contents

DRM(digital rights management) is a tool for protecting copyrights and managing the rights of usage. Many DRM technology have been developed, which cause inconvenience for user in the usage of the content. DRM´s standardizations have been proceeding for interoperability between different DRMs therefore. EXIM developed by Korea recently proposed the method for the interoperability of download contents, however, in the case of streaming content, it is difficult to apply EXIM technology for downloadable content because the process of encoding and transmitting of streaming content is complicated and the DRM technology is applied within these processes. In this paper, we propose the DRM interoperability structure for streaming content between the content providing server and the end device in which different DRM systems are installed respectively. We set up the interlock system for the DRM interoperability of streaming content between the content provision server and end device and using this system we wish to design the free and safe distribution system of the streaming content independent of the DRM types.