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video request
相关语句
  视频点播
     The online teaching models are classified and teaching models based on the LAN(multimedia networks, video request network) and Internet(individual study, the 1-to-1, 1-to-many, many-to-many) are brought up.
     本文对网上教学的模式进行了分类,提出基于局域网上(多媒体网、视频点播网)的教学模式和基于Internet上(个别学习、1对1、1对多、多对多)的教学模式。
短句来源
     On ATMbased Video Request Services
     基于ATM的视频点播业务
短句来源
     By analyzing the deficiencies of current systematic VOD video request system, the article designs the multimedia courseware broadband network request system, and introduces the make - up, key technology and working scheme.
     分析了现行系统VOD视频点播系统的不足,自行设计了多媒体课件或其他媒体系统宽带网点播系统,并介绍了该系统的组成结构、实现方案和关键技术。
短句来源
     From three aspects of concept,technique and application the stream medium,this paper expounds the rising stream medium services,and points out that the stream medium technique will find its extensive application in the online education,video request and other fields.
     从流媒体的概念、技术与应用3方面对新兴的流媒体业务进行了阐述,指出流媒体技术将在网上教育、视频点播等领域有着广阔的应用。
短句来源
     The paper introduces the necessity of computer local network and safe precaution system for intelligent residential quarter,analyses the demand of building equipment monitoring system,three meters' cost automatic calculating system,public broadcast system and video request system,and considers that the construction of intelligent residential quarter should be properly orientated to meet owners' actual requirements according to a series of factors such as con-struction scale,user condition,sale level,adjacent environment,auxiliary facilities and man a-gement demand.
     介绍了计算机局域网、安全防范系统对智能化住宅小区的必要性,同时对楼宇设备监控系统、三表自动计费系统、公共广播系统和视频点播系统的需求作了一定分析,认为住宅小区的智能化建设应根据其建设规模、用户对象、销售档次、周边环境、配套设施和管理要求等多方面因素进行综合考虑,把握好业主的真实要求,做出合理的定位。
短句来源
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  相似匹配句对
     On ATMbased Video Request Services
     基于ATM的视频点播业务
短句来源
     Video Stabilizer
     视频画面稳定器
短句来源
     Description involving transmission of graphic, voice and video on request of band.
     按国际电信联盟 (ITU)的标准对媒体进行了分类 ,阐述了图像、音频、视频传输对带宽的要求 ,以及多媒体传输技术的特点以及相关的应用
短句来源
     Video show
     视频交流
     On "request" speech acts
     论“请求”言语行为
短句来源
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  video request
A class-based service model is developed where an incoming video request can specify a playback rate at which the data is consumed on the client.
      
Video request migration among servers to achieve effective video-on-demand (VoD) services is investigated in this work.
      
The conventional approach to the support of on-demand pause-resume provides one video access stream to disks for each video request.
      
Once a new video request is admitted, a system request is assigned to the proper NAP and SAP for video delivery.
      
Given its bit-rate characteristics, we examine whether a new video request can be admitted without causing underflow at any of the receivers.
      


This paper discusses the synchronization requirements in the transmission of encoded data and the problems of the asynchronous transmission mode,and brietly introduces the selection of the AALs in the ATM and other various schemes of ATMbased video services.We also discuss three service systems.i.e.the wholly concentrated system,the quasiwholly system,and the wholly distributed system.Special treatment is given to a special video request system——the video renting system,the influence of the DSMCC...

This paper discusses the synchronization requirements in the transmission of encoded data and the problems of the asynchronous transmission mode,and brietly introduces the selection of the AALs in the ATM and other various schemes of ATMbased video services.We also discuss three service systems.i.e.the wholly concentrated system,the quasiwholly system,and the wholly distributed system.Special treatment is given to a special video request system——the video renting system,the influence of the DSMCC and the network congestion caused by the DSMCC.

讨论了编码数据传输中有关同步性的要求和有关异步传输模式的问题;简要介绍了ATM适配层(AAL)的选择、基于ATM的视频服务的各种方案。对三种不同的服务体系:完全集中式,准集中式和完全分布式进行了讨论。尤其是描述了在一种特殊视频点播系统——视频租用系统中数字存储多媒体控制命令(DSM-CC)的影响,并对其产生的网络拥塞也进行了分析。

This paper is a performance study of a distributed video server system in a fully connected network. Our analytical model can be used to determine the blocking probability of video requests and the requirements of network bandwidth given the capacity of video servers and hence the trade-off in communication and storage costs.

对全连网络的分布式视频点播系统进行了性能分析,提出了一种VOD系统的分析模型,可以利用这一模型计算视频请求发生拥塞的概率以及网络的带宽要求,同时还可以得到在通信和存储费用两者之间的一个折衷方案.

Nowadays TV anytime has been widely applied in various fields. Because a number of high quality video stream requires large brand width, the technology of using a central server to provide video service to the large amount of users, is not feasible as well as being expensive. One of the viable solutions, hence, is to construct a distributed server network to support a large scale TV anytime system. Besides all the technical concerns involved in server network, the video mapping problem...

Nowadays TV anytime has been widely applied in various fields. Because a number of high quality video stream requires large brand width, the technology of using a central server to provide video service to the large amount of users, is not feasible as well as being expensive. One of the viable solutions, hence, is to construct a distributed server network to support a large scale TV anytime system. Besides all the technical concerns involved in server network, the video mapping problem in server network is actually one of the key issues which determines the efficiency of the TV anytime system. This paper presents two various policies used for the effective mapping of videos in the runtime of a large scale TV Anytime system that is based on a hierarchical server network. A predictive assignment policy is presented to periodically determine the mapping of videos to the server network. The predictive assignment is intended to address long term variations in the system. It decides when, where and how often each video should be replaced. We employ a set of heuristic algorithms to solve this dynamic mapping problem with the aim to maximally utilize the resources in the system, in particular, to increase bps of each video requested by users. Furthermore, an adaptive reallocation policy is presented to handle the short term variations. This adaptive reallocation is based on revenue/cost of different videos. The objective is to maximize the overall revenue that the server system generates. We used a hierarchical architecture of server network assumed to be a 4 level 2 ary complete tree to test the performance. The simulation results demonstrate that these policies yield an efficient system and make the system more adaptive.

该文提出了两种不同的策略 ,来处理一个基于层次型服务器网络的大规模 TV- Anytim e系统中的动态影像映射问题 .基于预测的阶段性重映射策略是每隔一个时间周期决定服务器网络中的影像对象映射 ,以处理系统较长时间内的变化 .自适应的重分配策略则处理系统较短时间内的变化 ,该重分配策略基于不同影像对象的收益 /开销 ,其目标是尽大化服务器系统产生的收益 .模拟实验表明 ,这些影像对象管理策略提高了系统的性能和自适应性

 
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