The Research Of Digital Rights Management On IPTV

With the computer multimedia technology, communications technology and the rapid development of broadband Internet technology, the television network integration and promoting becomes the trend of the future development of information and communication technologies. IPTV makes it more convenient to enjoy rich digital multimedia content. However, the safety of media content and user identity impact the digital media and market prices. IPTV security of guaranteed production, distribution, transmission and watching, establishing an effective copyright protection and access control measures, IPTV could really implement, The market will be able to ensure the normal development of IPTV applications. Therefore, the study of the digital copyright system based on IPTV has great significance.In this paper, the author studies IPTV system architecture which is based on carrier-class end-to-end integrated IPTV platform RollingStream system, at the same time analysing the digital copyright protection methods, pointing out the shortcomings of video watermarking algorithm can not meet network video copyright protection requirements, so in IPTV system it should use DRM (Digital Rights Management) technology for digital copyright protection which core is data encryption and anti-copy. According to the three key IPTV DRM technology and the commercial application model, the author analyses the actual meaning of IPTV DRM system basic elements and outlines three DRM solutions.According to DRM system functional architecture and information architecture, the author provides DRM system architecture, data model and data flow graph, also through the analysis of system model, the author poses digital rights management realization to license authorization server, proposing design objectives, system control processes and work flow of licensing authorization server.Combining DRM criterion with several practical solutions, this paper gives IPTV DRM system overall realization scheme, and provides a detailed analysis of key acquisition technologies, including the head expansion of Streaming Media Transfer Protocol, the realization of license server related to key, content engine controller and set-top-box key acquisition program. Finally media available and the channel add operation graph in IPTV DRM system are provided. Through the study of this item, this paper will provide certain reference to the realization of the IPTV DRM system and a certain amount of information exchange in the future.