The real - time transport protocol ( rtp ) drawn by ietf is a protocol worked on the top of transport protocol . rtp provides end - to - end real - time multimedia data transmission . rtcp , one of its components , can effectively control and monitor the transmission Ietf制订的实时传输协议rtp是一个基于传输层的协议，它提供端到端的实时数据传输服务，其中的实时传输控制协议rtcp提供的控制功能可以有效的监控视频信息的传输。
In the end , we design and realize a simple h . 323 terminal using direct communication , which can work on the lan . also this thesis emphasize on the process of the embedded voip terminal based on dsp . we study the software and hard ware design of this system detailedly 在此基础上，本文设计并实现了一个基于局域网使用直接通信方式建立连接的简单voip终端，从工程上验证了voip网络理论及实时传输协议对语音传输的保障作用。
This thesis expatiates the relative theories of mnvms such as motion video capture , data code and real - time transport protocol based on the technology of multimedia and computer network . then the hardware and software models of mnvms are presented 本文在计算机多媒体技术和网络技术的基础上分析了多媒体数字录像监控系统相关技术视频采集、数据编码等的基本原理，介绍了实时传输协议，提出了多媒体数字录像监控系统的硬件结构和软件结构。
This technology mainly contains three content : 1 ) media encode / decode standards , such as mpeg serials , h . 26xserias etc . 2 ) media transport protocols , such as rtsp , mms etc . 3 ) content delivery methods , such as c / s model , the high cost cdn model , ip multicast etc . but , the traditional c / s model usually confines the amount of users due to the limited bandwidth resource 流媒体技术主要包括三方面的内容: 1 )媒体压缩,如mpeg系列、 h . 26x系列等压缩标准; 2 )多媒体实时传输协议,如rtsp 、 mms等多媒体实时传输协议。 3 )媒体发布方式,如传统的c / s方式,以及成本较高的cdn方式。
In the data transfer , according to the characteristic of data type , we adopt multi - kinds of transfer protocol - the control command and emulational graphics data that is transferred on the basis of tcp socket , and the video image transport based on real - time transport protocol ( rtp ) . and between the distributed objects , it adopts multi - kinds of communication way - one way transfer , synchronous call and push technique based on incident serve of corba 在数据的传输中，根据数据类型的特点，采用多种传输协议?基于tcpsocket传输的控制命令、图形仿真数据和基于实时传输协议rtp传输的视频图像；分布式对象之间采用多种通信方式?单向发送调用、同步调用和基于事件服务的push技术。
In the paper , some key techniques which are dealt with in the system implement have been discussed , such as the principle of video encoding and compressing , mpeg compressing standard , the principle of streaming media , realtime transport protocol ( rtf ) , real - time transport control protocol ( rtcp ) , real time streaming protocol ( rtsp ) , the network architecture ; the technique of ethernet and the programming technique of realization of network communication , etc . based on the above key techniques , a simple , valid and inexpensive solution to rebuild existent traditional surveillance system is supplied in this dissertation 本文分析了现有模拟监控系统的优缺点，重点讨论了视频编码压缩原理， mpeg压缩标准，流媒体技术原理，实时传输协议rtp ，实时传输控制协议rtcp ，实时流协议rtsp ，网络体系结构，以太网技术和网络通信编程技术等系统实现过程中所涉及的关键技术。基于上述关键技术，本文提出了传统视频监控系统的数字化和网络化改造的一种简单可行且成本低廉的解决方案。
At the beginning , this paper has some brief dissertation on the basic principle of the dsl and the multimedia data compression , the key technique of sdsl , the transport protocols , and the data transfer system structure based on the twisted - pair . then it gives an analysis of the point - to - point data link protocol ( ppp ) and the real - time transmission protocol in detail , which provide the side - to - side transmission service for audio frequency and video frequency data , and so on based on the these , we developed a multimedia sdsl modem system used to transfer data and phonetic 本文首先对dsl系统和多媒体数据压缩技术的基本原理、 sdsl的关键技术、传输协议以及基于双绞线的数据传输系统的结构进行了简要的论述，并详细分析了点到点的数据链路协议( ppp协议)以及实时传输协议，其为音频、视频等实时数据提供端到端的传送服务。可以向接收端传送恢复实时信号必需的定时和顺序信息，并向收发双方和网络运营者提供qos监测手段。
The system realization mainly includes the realization of recording , playing , coding - decoding , compressing and rtp of the audio as well as video capturing , replaying , etc . those problems of audio - compressing technology , audio - delaying , audio - jitter , echoing and voice activity detection which influence the audio quality have also been discussed and dealt with 其中系统实现主要包括语音的录制、播放、编解码、压缩、实时传输协议等的实现以及视频采集、回放等。对影响语音质量的语音压缩技术、语音时延、语音抖动性、回声以及静音等问题进行了探讨和处理。
This paper content includes : chapter 1 introduce the development of network robotics and the components of network robot system ; chapter 2 discuss video pretreatment including video capturing video encoding and video decoding providing for network video real - time transporting ; chapter 3 and chapter 4 introduce tcp / ip and programming method about socket , then real - time transport protocol ( rtp ) and real - time transport control protocol ( rtcp ) are discussed , basing on rtp and rtcp network video transporting method is put forward for network robot system ; from chapter 5 to chapter 7 other technologies about network robotics are introduced and discussed ; chapter 8 and chapter 9 on windows platform this method is implemented , application programming is workout , experiment is done and results is analyzed ; chapter 10 summarize 本文主要内容包括：第1章介绍网络机器人研究现状和发展趋势，及网络机器人系统的基本组成；第2章结合网络机器人的具体情况，分析视频的预处理方面问题，包括：视频采集，视频编码及视频解码等，提出相应的解决方案，为视频的网络传输提供条件；第3章、第4章介绍internet使用最广泛的tcp ip协议和套接口编程原理。介绍基于tcp ip协议的实时传输协议( rtp )和实时传输控制协议( rtcp ) ，深入研究并探索基于实时传输协议( rtp )和实时传输控制协议( rtcp )之上的适用于网络机器人的视频实时传输的方法；第5章到第7章介绍与网络机器人视频传输技术相关的其它技术；第八8 、 9章按照以上章节提出的方法，通过编制应用成程序在windows平台上实现网络机器人视频传输；笫10章分析实验结果并加以总结。
Then we use a general architecture model of distributed system for reference , by adding a part of non - real - time kernel in the kernel layer , we ameliorate the architecture model and apply it to frame the naval chain of command . in order to adjust demand of naval chain of command , we boost the general real - time transmission protocol by adding measures to the old protocol in the aspect of data transferring and reliability by software , after we call the improved protocol dynamic real - time transmission protocol . as an innovation in real - time performance research and design , we try to improve the real - time performance by using capability of both vxworks and real - time transmission protocol furthest 文中首先介绍了实时系统和分布式系统的基本理论，然后提出了一种新的分布式实时系统结构模型，并应用新模型进行了舰艇指控系统的设计，论文针对舰艇系统的应用特殊性对已有的实时通信协议进行了改进，扩充了数据传输和可靠性处理的部分，在文中称改进后的协议为动态实时传输协议，然后应用vxworks实时操作系统和动态实时传输协议进行舰艇指控系统中进行实时任务和实时传输的研究和设计，最后对实时性研究方案进行了仿真试验并取得了较好的效果。
