共查询到19条相似文献,搜索用时 140 毫秒
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随着数字电视的迅速发展和移动多媒体设备——手机,PDA等的普及,新的技术被发展并应用于手持设备数字电视的接收,DVB-H手机电视标准提供了很好的手机电视接收解决方案。该标准是DVB-T的扩展应用,在数据链路层实现了时间分片、多协议封装和前向纠错功能,从而降低了平均功耗,增强了移动接收的鲁棒性。提出了基于E语言的DVB-H系统数据链路层的功能验证环境,并给出了具体验证步骤和结果分析,最后通过验证分析完善和改进了DVB-H数据链路层系统功能,此外对基于E语言的验证方法进行了一定的研究。 相似文献
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上期杂志我们介绍了PhenixSSA项目以及“DVB-H在中国的市场机会研讨会”的相关情况,并将PhenixSSA项目的部分研究成果与大家共同分享。此外,《浅谈手机电视》及《关于手机电视与移动流媒体的现状与发展发展》两篇文章对手机电视的各种技术、标准进行了对比,并介绍了最新的进展。本期《手机电视离我们有多远》专题的下半部分,侧重介绍手机电视方面的相关技术,包括爱迪德在移动数字版权管理方面的解决方案,以及法国DiBcom、泰雷兹广播与多媒体公司在前述DVB-H研讨会上的演讲摘要。 相似文献
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上期杂志我们介绍了PhenixSSA项目以及“DVB-H在中国的市场机会研讨会”的相关情况,并将PhenixSSA项目的部分研究成果与大家共同分享。此外,《浅谈手机电视》及《关于手机电视与移动流媒体的现状与发展发展》两篇文章对手机电视的各种技术、标准进行了对比,并介绍了最新的进展。本期《手机电视离我们有多远》专题的下半部分,侧重介绍手机电视方面的相关技术,包括爱迪德在移动数字版权管理方面的解决方案,以及法国DiBcom、泰雷兹广播与多媒体公司在前述DVB-H研讨会上的演讲摘要。 相似文献
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手机电视业务的发展与技术分析 总被引:4,自引:0,他引:4
文章对手机电视业务的实现方式、标准化、发展及存在问题等方面进行了阐述, 并对手机电视的两个地面数字广播标准:DVB-H和单频段ISDB-T进行了技术分析。 相似文献
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本文主要从手机电视技术实现方式、DVB-H广播技术标准、DVB-H手机电视系统结构、手机电视典型业务及其特点、手机电视面临的问题、手机电视发展策略、手机电视运营模式等方面,就手机电视技术要点与业务运营问题进行分析和论述。 相似文献
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随着我国数字电视地面传输标准DMB-TH的出台,手机电视标准也成为业界研究讨论的热点。针对目前国际上比较成熟的几种手机电视解决方案,包括欧洲的DVB-H、韩国的T-DMB,以及我国自主产权的DMB-TH和STiMi,本文从系统架构,核心技术和节约功耗技术的层面——作了介绍,对总局大力支持的多媒体广播技术STiMi予以了充分的认同。同时,文章对我国手机电视的运营模式作了简要的分析和展望。 相似文献
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The DVB-H Mobile Broadcast Standard 总被引:1,自引:0,他引:1
The digital video broadcasting-handheld (DVB-H) standard is one of the latest transmission standards developed by the digital video broadcasting (DVB) Project. DVB-H, which is based on the standard for digital terrestrial television (DVB-T), offers mobile television and other broadcasting services on small portable devices such as mobile phones. This article presents an overview of the DVB-H standard with respect to structure, features, technology, performance, and resources. 相似文献
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DVB-H是数字视频广播(DVB)组织为通过地面数字广播网络向便携/手持终端提供移动多媒体业务所制订的最新标准。对DVB-H系统的构成、关键新技术、技术的试验情况及技术专利情况进行了分析。 相似文献
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DVB-H作为能通过移动手持设备接收丰富的媒体和电视服务的新型标准,其技术规范及应用越来越受到人们的关注.通过对DVB-H中无缝交互技术的研究,提出了一种新的无缝交互算法,并对该算法进行了评估. 相似文献
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DVB-H: Digital Broadcast Services to Handheld Devices 总被引:5,自引:0,他引:5
Faria G. Henriksson J.A. Stare E. Talmola P. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》2006,94(1):194-209
This paper gives a brief review of the new Digital Video Broadcasting-Handheld(DVB-H) standard. This is based on the earlier standard DVB-T, which is used for terrestrial digital TV broadcasting. The new extension brings features that make it possible to receive digital video broadcast type services in handheld, mobile terminals. The paper discusses the key technology elements-4K mode and in-depth interleavers, time slicing and additional forward error correction-in some detail. It also gives extensive range of performance results based on laboratory measurements and real field tests. Finally it presents viewpoints relevant for DVB-H network design and system use in general. 相似文献
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移动数字电视接收与DVB-H 总被引:1,自引:1,他引:0
从接收端的角度出发分析了DVB-H标准在功耗、移动性和服务质量方面的技术改进,并介绍了DVB-H最新进展,对未来移动数字电视的发展提出了自己的观点. 相似文献
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回顾了DVB-H标准的发展历程,介绍了DVB-H系统的技术架构、关键技术、最新进展以及所面临的竞争,并以数字电视广播结合移动通信网络之交互式业务应用为例,说明了未来技术的发展方向. 相似文献
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Mobile TV services are expected to become a key application in future wireless networks. The recently proposed terrestrial digital broadcast technology, DVB-H, especially designed for mobile services, is regarded as a powerful alternative to the 3G cellular networks that already offer these services out on a point-to-point basis. Unfortunately, the cost of supporting real-time streaming and full area coverage seems to be very high compared to fixed TV services. In this article we discuss hybrid IP datacast DVB-H and 3G systems as a possible solution for providing affordable network infrastructure and services. Our approach is DVB-H centric. The 3G cellular system plays the role of providing interactivity, error reporting, and repair for the DVB-H broadcast channel. To enable an easy and efficient interworking of DVB-H and 3G, we employ forward error correction at the application layer with digital fountain coding. The main way to provide lower cost services is to avoid full DVB-H area coverage from the beginning and to perform an incremental DVB-H network deployment that follows the user demand. In this direction, to hide the discontinuity in coverage from the perception of users, we propose to take advantage of the bursty character of DVB-H transmissions and the mobility of users. This is possible by sending additional parity data, either with the DVB-H or the cellular network, in the time intervals between original service bursts. We evaluate the potential DVB-H infrastructure cost savings determined by transmitting additional parity data in DVB-H when targeting vehicular users. The implications of delivering parity data through the cellular network also are discussed. The numerical investigations show a potential for significant cost savings compared with the traditional approaches 相似文献