DRM在IPTV中的研究与应用

近年来互联网的迅猛发展有力地推动了数字商品，如书籍、音乐和图片等媒体内容电子版的销售。但数字商品可以在无任何品质损伤的情况下被轻易拷贝和再分发的特性又使互联网成为非法使用、传播有版权媒体内容的温床。因此，数字版权管理（Digital Rights Management，DRM）产业引起了人们高度的关注。文章介绍了DRM的基本原理，分析了现在流行的DRM的工作情况，针对DRM的缺点，提出了一种IPTV系统改进的DRM模型，论述了它的工作流程，并分析了它对比其他DRM模型的优越性。

Study and Application of DRM in IPTV

Recently the rapid development of the Internet strongly promotes the sales of the digital goods, for example, the electronic editions of the media contents, including books, music and photos. However, the digital goods can be easily copied and re-distributed without any quality damage, thus making Internet the hotbed for illegal use and dissemination of the media contents. Therefore, the industry of Digital Rights Management（DRM） has attracted great attention from the people. In this paper, the basic principle of DRM is described, the disadvantage of existing DRM analyzed, an improved DRM model of IPTV system proposed a detailed work flow given. Finally, the superiority in contrast with other DRM models is discussed.