移动流媒体数字版权管理

文章首先介绍了数字版权管理的基本原理,然后描述了DRM的三种内容分发方式,并讨论了专用于移动网络流媒体DRM的内容格式及相关的业务流程,最后对OMA DRM的发展趋势作了简要分析.     

移动DRM技术的发展和应用分析

对移动DRM关键技术进行了研究,对目前移动DRM的标准化现状进行了介绍,讨论了基于OMA的移动DRM技术,分析了移动DRM技术的应用情况。     

OMA DRM技术体系研究综述

为了对最新发布的开放移动联盟(OMA)数字版权管理(DRM)标准的技术体系结构有一个系统全面的认识,积极推动我国DRM标准的制定和数字内容保护技术的应用研究,该文在深入研究最新发布的OMA DRM2. 0规范的基础上,对OMA DRM技术体系结构：版权对象获取协议(ROAP)、安全模式、体系结构、内容格式和版权描述语言进行了详细分析,然后从综合角度给出一个系统全面的OMA DRM工作机制：OMA DRM 工作流程和原理,最后,对OMA DRM性能做了详细分析：OMA DRM2. 0和OMA DRM1. 0的主要区别,以及OMA DRM2. 0的尚待改进之处。     

IPTV中的数字版权管理方案研究

首先简要分析IPTV技术发展,其次介绍数字版权管理(DRM)技术,最后结合IPTV业务特点提出基于OMA DRM规范的IPTV数字版权管理方案。     

IPTV超高清视频中的DRM技术研究与应用

对OMA、微软、Intertrust、ChinaDRM等不同DRM标准进行特点和差异性比较,提出DRM应用的需求场景,分析了DRM关键技术,基于业界普遍使用的高安机顶盒对IPTV高清视频领域DRM保护需求进行架构设计,创新性地提出了高安机顶盒的硬件信任根、远程下载终端密钥、双重加密的内容密钥,能够充分利用目前机顶盒生产过程中已有的芯片OTP数据烧写流程,既充分考虑运营中的可实施性,又保障了DRM安全性,最后制定了DRM内容解密的业务流程并给出实施案例。     

数字版权管理领域相关技术专利问题的分析及对策

在知识经济全球化的今天,标准和知识产权紧密地结合在一起,形成了"技术专利化、专利标准化、标准垄断化"的竞争新格局.本文回顾了开放移动联盟(OMA)推出的数字版权管理(DRM)标准遭遇到的专利危机,对整个DRM领域的专利进行了多角度分析,并分析了其他DRM相关标准的专利问题,在此基础上,提出了中国DRM标准制定工作中需要注意的专利问题及相应的对策.     

移动互联网业务与OMA技术标准

阐述了移动互联网在移动业务应用领域的范畴：从国际标准化组织OMA制定的一些移动业务能力技术标准的角度,论述了移动业务应用能力对移动互联网服务的技术支撑关系：提出近期移动业务应用领域标准化工作的重点方向。     

下一代网络业务开发和控制平台的标准化研究

下一代网络对业务的快速开发和部署需求越来越迫切,需要在网络能力开放的基础上进一步开放业务的能力.本文对与下一代网络的业务开发和控制相关的两大主要标准化组织3GPP和OMA进行了详细研究,阐述了3GPP IMS作为下一代网络业务开放的统一的控制平台的工作机制,分析了OMA业务环境OSE的概念和思想,并详细分析了OSE与IMS的关系.最后以PoC业务为例阐明了下一代网络的业务开发模式及业务之间的调用关系.     

基于手机智能卡的DRM系统的设计与实现

本文采用OMA DRM标准,以PKI安全体系为基础,采用HTTP和ROAP作为传输协议,设计出一个在手机上使用的,基于智能卡的数字版权保护系统。用户通过使用该系统,可以在手机上有偿地使用各种数字资源,随时随地享受网络带来的方便与快捷。     

MPEG-21 Rights Expression Language: enabling interoperable digital rights management

The Internet has spawned a revolution in the way people distribute content and access services. At the same time, the availability of broadband and wireless networks has increased, as have the capability and portability of computing and consumer electronic devices. These factors have fueled the development of new technologies to automate, manage, and secure content flow and service access over the Internet. This paper deals with the recently approved ISO standard, MPEG-21 Rights Expression Language (REL). This language is precise, flexible, extensible, and rich in expressing rights. Thus, it can support reliable, flexible, and cost-effective interoperable digital rights management (DRM) systems and applications for electronic commerce and enterprise management of content and services. It is an international standard for expressing and interpreting rights for using and distributing content, resources, and arid services. As an enabling technology for interoperable DRM, its' adoption by industry and incorporation into products certainly takes time. The challenge is to proliferate the REL's adaptation across many different DRM systems as well as conditional access and authorization systems. Moreover, the REL must pervade not only entertainment but also many other applications, such as enterprise, medical information, and even privacy protection.     

支持互操作的移动DRM系统研究

互操作性是评价数字版权管理(DRM)系统性能的一个重要指标.本文首先对DRM系统的互操作性及技术现状进行了分析,然后结合移动应用的特点,给出了一个支持互操作的移动DRM系统技术方案,并对系统各部分功能的实现进行了详细的描述.     

Applying IP over wmATM technology to third generation wirelesscommunications

With the rapid development of third-generation wireless mobile communication systems worldwide, the wireless mobile ATM enhanced software radio platform has taken the lead in the implementation process, which helps construct a broadband wireless pipe and “IP over wmATM” open signaling suite to support various common air interfaces for the wireless industry. This article presents the implementational issues using the IP over wmATM solution for 3G broadband wireless mobile communication systems. It includes the design of the wmATM medium access controller, protocol stack, wmATM module definition, and software radio platform, as well as IP unified 3G wireless networks     

OMA协议下的TS节目DRM解决方案

数字版权保护技术已经成为网络电视中除了视频编码技术以外的又一项核心技术。它用于保护内容所有人的版权,控制客户对于内容的使用。文章在阐述OMADRM标准的基础上,提出了一种适应国内广电系统实际播控环境的TS制式节目的DRM解决方案,并根据自行开发的演示系统,就其加密效率加以论证。     

Data hiding for fighting piracy

The problem of digital content piracy is becoming more and more critical, and major content producers are risking seeing their business being drastically reduced because of the ease by which digital contents can be copied and distributed. This is the reason why digital rights management (DRM) is currently garnering much attention from industry and research. Among the various technologies that can contribute to set up a reliable DRM system, data hiding (watermarking) has found an important place due to its potentiality of persistent attaching some additional information to the content itself. In this article, we analyzed the possible use of data hiding technology in DRM systems. The article also gives a brief survey of the main characteristics of the most common data hiding methods such as proof of ownership, watermark, copyright protection, infringement tracking, copy control, and item identification. The article also investigates the different approaches by highlighting critical points of each approach in particular from the point of view of hostile attacks.     

移动网络数字内容分发的版权管理研究

随着第三代移动通信和数字技术的迅速发展,移动网络成为人们获取、消费数字内容的重要途径.为了解决数字版权保护问题,本文利用Java SIM卡提供的安全计算环境部署数字版权代理,提出了一套支持B2C、B2B和C2C多种分发模式的移动数字版权管理系统,其中内容提供商负责进行授权,服务提供商和内容批发商负责数字内容的交易和服务,这种销售、授权和实施分离的方式确保了数字内容分发的灵活性、公正性和可审计性.     

数字版权管理及其在3G手机中的应用研究

通过对W-CDMA等3G手机的技术现状和当前的相关技术进展的介绍,分析了3G终端的新的业务应用.在详细分析3G手机和OMA数字版权管理的系统架构的基础上,结合两者的实现要求和软硬件基础,提出了在W-CDMA手机上实现DRM的方案.     

OMA DM‐based remote software fault management for mobile devices

Mobile devices (e.g. mobile handsets or PDAs) have gained much functionality and intelligence with the growth of mobile network technologies and the increased use of mobile services. As a consequence, mobile devices have become more complex and many related problems have occurred. Specifically, sudden rebooting and freezing problems caused by software faults decrease the availability of the mobile device and cause inconvenience to end‐users. To solve such problems, academia and industry have focused on Open Mobile Alliance (OMA) Device Management (DM); this method is the international de facto standard for mobile device management. In this paper, we propose a software fault management method to remotely determine and correct problems of mobile devices based on OMA DM. We present a definition of management objects and a method to collect them from mobile devices using the OMA DM protocol. We also present a method for debugging and correcting software faults using the collected information. Finally, we present a prototype implementation and performance evaluation to validate our proposed method. Results of the performance evaluation show that our proposed method is efficient and scalable in regard to network traffic overhead and response time. Copyright © 2009 John Wiley & Sons, Ltd.     

Hot topics for mobile services

Upcoming mobile technologies like the Universal Mobile Telecommunications System (UMTS) or Voice-Over-IP/IP Multimedia Subsystem (VoIP/IMS) offer new possibilities but also threats. Consequently, operators and vendors need to adopt appropriate technology and business principles. This article focuses on the concept of Service Platforms to allow flexible and fast service development, and enablers for Location Based Services.     

面向移动增值业务的数字版权管理方案

数字版权管理技术可以使内容提供商有效地控制他们的数字媒体对象的发布。它可以限制用户的操作,用户的使用次数,规定用户使用的起止时间或者提供预览功能等等。从介绍DRM的基本原理及功能出发,阐述了DRM的架构及其核心技术,最后介绍了如何把它运用在移动增值业务上的实现步骤。     

A Tool Pack Mechanism for DRM Interoperability

As the number of digital content service providers increases, a variety of digital rights management (DRM) systems appear without supporting interoperability. The lack of interoperability in DRM systems causes inconvenience to customers, especially when they want to play content through multiple devices manufactured by different vendors. In this letter, we propose a novel method to support interoperability between different DRM systems. The proposed technique aims to build an open framework structure which satisfies DRM vendors' requirements by enhancing the security of intellectual property management and the protection tools.