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1.
媒体版权管理技术(DRM)是网络环境下流媒体内容交易和传播的重要技术,用于保护流媒体内容的版权,控制流媒体的使用和传播.结合现阶段网络应用中流媒体认证技术的实际应用情况和新一代数字版权管理(DRM)技术,提出一个通用的流媒体数字版权保护架构,并最终实现了基于该方案的流媒体版权管理系统.  相似文献   

2.
本文以流媒体技术和DRM技术为背景,分析了DRM系统的功能框架.提出了一种适合流媒体DRM的认证服务机制。文中阐述了认证机制的功能、作用和流程,并介绍了认证服务的实现原理.最后在一个流媒体DRM系统中实现了该认证机制。该机制的研究为网络流媒体版权的认证和保护提供了有效的途径。  相似文献   

3.
一种流媒体数字版权管理系统的设计与实现   总被引:4,自引:0,他引:4  
王全文  向文 《计算机应用》2005,25(12):2805-2807
针对当前流媒体数字版权管理(Digital Rights Management,DRM)的现状,提出了一种基于三层密钥机制的流媒体DRM方案。介绍了该系统框架并作了安全性分析,然后对系统的实现方案作了详细的叙述。  相似文献   

4.
数字版权管理(Digital Rights Management,DRM)系统旨在端到端地保护数字内容的可控使用,然而客户端平台的安全隐患使得数字内容的合理使用受到威胁.在研究可信计算技术的基础上,提出可信计算技术与DRM系统相结合的可信DRM系统的一般结构,并重点阐述了可信计算技术在许可证分发和数字内容使用两个重点环节中的应用.进一步地,设计并提出一个可信DRM系统的身份认证及密钥协商协议,并给出其安全性分析.该协议实现许可证服务器对DRM客户端的身份认证及完整性验证,并产生共享密钥保护数字版权的发放.  相似文献   

5.
数字版权管理是网络环境下数字内容交易和传播的重要技术。大多数数字作品供应商采用基于DRM的加密和认证技术来反盗版。本文提出一种基于虚拟机可信平台的数字版权管理方案。该方案基于TCG的可信计算平台保证生成信任链;使用Terra架构保证系统的隔离性、安全性并能将使用的内容向远端认证,保证数字文件在授权范围内使用,防止复制传播。  相似文献   

6.
提出了基于智能卡的数字电影版权管理方案。该方案将密钥数据存储于智能卡中并且解密运算全在卡内完成,与通用的软件方案相比提高了系统的安全性,用户认证时使用的是卡内信息而非用户信息或设备信息,不仅保护了用户隐私,还实现了权力转移的功能。开发了基于智能卡的数字电影DRM系统,实现了数字电影加密分发、授权和权利转移等系统功能,满足了数字电影版权保护的安全需求。  相似文献   

7.
DRM中流媒体加密密钥切换技术研究与实现   总被引:1,自引:1,他引:0       下载免费PDF全文
李飞  周玉洁 《计算机工程》2009,35(9):142-143
针对数字版权管理(DRM)系统中流媒体的内容加密密钥不易更换的问题和基于OMA DRM2.0规范与ISO13818-1 MPEG 2 TS标准框架,提出提前下发期、密钥过渡期及切换时间窗的机制和严密的内容加密密钥切换时序流程,实现流媒体内容加密密钥平滑切换,提高DRM系统安全性,不影响用户正常收看流媒体节目。  相似文献   

8.
一种基于PKI的DRM系统   总被引:2,自引:0,他引:2  
利用现有的PKI技术来建立DRM数字版权管理系统。提出的PKIDRM系统可以实现DRM用户的匿名认证,保护用户的个人隐私。另外实现了对数字产品许可证的动态管理,DRM用户可以在不同的计算机上使用自己购买的数字产品许可证,可以通过DRM系统进行数字许可证的转让和撤销。  相似文献   

9.
针对共享资源引发的版权问题,提出了一个基于WMRM模型的版权管理应用方案.介绍了版权管理的概念及其应用背景和相关研究工作,分析了包含内容服务和许可服务的DRM(digital right management,数字版权管理)结构模型,研究关键技术问题,其中重点讨论了认证模式和认证流程,在上述基础上,最终实现了一个应用于内容分发的模块化版权管理模型.  相似文献   

10.
提出了基于智能卡的数字电影版权管理方案.该方案将密钥数据存储于智能卡中并且解密运算全在卡内完成,与通用的软件方案相比提高了系统的安全性,用户认证时使用的是卡内信息而非用户信息或设备信息,不仅保护了用户隐私,还实现了权力转移的功能.开发了基于智能卡的数字电影DRM系统,实现了数字电影加密分发、授权和权利转移等系统功能,满足了数字电影版权保护的安全需求.  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

18.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

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