实时服务

In this paper, we present a system for real-time capturing, processing and interactive delivery of multi-view video.

与其它研究多视角视频采集与后期处理的系统不同，本文介绍的可交互式多视角实时视频系统可以实时地采集与处理多个视角的视频数据，并在传统的单视角视频服务基础上，为IP网络中的多用户提供高度可交互的视觉特效服务。

RFRTOS provides kernel preemptability at interrupt level by employing following methods: Tasked kernel services.

与传统是实时核心通过对系统服务的限制来达到快速响应的方法不同，QoS实时应保持系统服务的完整，在这种情况下，核心可抢占精度就成为决定系统服务精度的一个较为重要的指标，而这也是RFRTOS研究的重点，RFRTOS通过以下几个方面工作达到了基于中断服务精度的可抢占核心；核心服务进程化。

While doing a good job leading component suppliers also serve as a very professional consulting services, to provide the most comprehensive real-time service.

在做好领先元器件供应商的同时，还充当非常专业的咨询服务，提供最完善的实时服务。

Pre-sale, sale, the after-sales service commitment has consistently adhered to 7 24-hour real-time service response.

售前、售中、售后服务承诺一贯坚持7×24小时实时服务响应。

Under the circumstance of network service, Real-time embedded operation system may have to process real-time tasks, and provide certain Internet service.

在网络服务环境下，实时嵌入式操作系统可能既要处理实时任务，又要提供一定的Internet服务。

The performance capability of DOCSIS compliant architectures is dependent upon the headend scheduling algorithms which are not specified in the specifications. Therefore, it is important to establish a set of reference performance characteristics for the most simple of scheduling algorithms against which more complex algorithms can be compared. A prioritized FCFS scheduling algorithm is adopted in this paper.

即使对于严格要求的实时CBR业务的延时性能，采用抢占优先级的服务策略所能提供的性能也大大好于业务所要求的性能，这就为进一步提高非实时数据业务的延时性能提供了机会，有可能采用适当的调度策略在满足实时CBR业务的延时性能的基础上，提高非实时数据业务的延时性能。

Therefore, there is a possibility for improving the performance of non-real-time data traffic while still meeting the QoS of service requirement for real-time CBR traffic. The DOCSIS is established as the primary HFC network data communication standard. The intended service allows transparent bi-directional transfer of Internet Protocol traffic between the Cable Modem Termination System in cable system headend and Cable Modem in customer locations with significantly high data rate.

DOCSIS HFC网络的宽带性能使得传输高质量的实时音视频数据成为可能，实时可变比特率视频业务是宽带HFC网络的主要应用之一，实时VBR视频业务具有严格的延时和延时抖动要求，然而当前的DOCSIS HFC网络只能提供高速Internet接入，只支持有限的服务质量保证，现有的协议和方法不适合上行传输实时VBR视频业务。

The call center based WEB richens the ways to access to traditional call center.

基于WEB的呼叫中心融合了WEB技术、语音技术和多媒体技术，使呼叫中心系统由单一的以声讯访问为主转变为多种媒体手段的组合，为用户提供了先进的搜索引擎、自助式的WEB页面访问；同时可以为用户提供VoIP、文本交谈、网页同步等实时服务。

Digital simulation for the integrated imformation transmission network of a certain power company is performed, the QoS under three configuration schemes, i.e., without QoS configuraiton, with simple differnece service configuraiton and with MPLS network configuration, are compared. Comparison resutls show that the configuration scheme of MPLS network can implement the load balance among link circuits and possesses fault self-recovery mechanism, so the failure elements can be quickly detected and the switching over of data flow among label switched paths can be realized. The fault recovery time is within miliseconds, therefore the QoS of power system realtime information can be ensured effectively and the QoS of various non-realtime information can be considered as well.

对某电力公司信息综合传输网络进行了数字仿真，比较了无服务质量配置、单纯差分服务配置和MPLS网络配置3种方案下的服务质量，结果表明：MPLS网络配置方案能够实现链路间的负载均衡，具有自愈性故障恢复机制，可以快速检测到失效元件并在多条标签交换路径之间实现数据流量的切换，故障恢复时间在毫秒级，可以有效保证电力系统实时信息的服务质量，并可同时兼顾各种非实时信息的服务质量。

Based specialized, generalized and visualized basic geographical information, it collects many information, such as detected video, traffic control signal, traffic peccancy, policemen distributing, traffic target, stopping position and capacity, to general manage and analyze. The primary visualized decision information including traffic flux, bus speed, traffic density, accident of real-time cities main road, are provided to traffic manager so that they respond rapidly, and some of them could be transformed to traffic inducing screen through network.

系统设计目的：建成一个基于网络环境的实时的、可视化的交通管理地理信息系统服务平台，它以专业化的、综合性的、可视化的基础地理信息为基础，综合集成现有系统，将监控视频，交通控制信号、交通违章监控等实时动态信息以及警力分布、交通标志、停车场位置及容量等各种数据采集起来，进行集中管理和分析，为交通管理者提供实时的城市各主要道路的交通流量、车速、交通密度、事故发生情况等可视化初级辅助决策信息，以便交通管理人员做出快速响应，也可将部分信息通过网络主动发布到交通诱导屏。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。