In order to enhance the bandwidth utilization factor , a transfer method based on multi - channel is presented . both the transmission of real - time media stream and time - stamp technologies are introduced to the system to ensure the requirement of real - time characteristic and synchronism , and a simple protocol based on rtp ( real - time transfer protocol ) and udp ( user datagram protocol ) is designed . the method , event simulcast , is also brought forward to reduce the data redundancy and expand the collaboration scale of the system 本文给出了远程教学的协同工作环境模型；设计中为了提高系统带宽利用率，采用一种更符合实际应用要求的“单播+广播”的有效通信方式；为了解决音视频同步问题，参考实时媒体流和时间戳同步技术，设计了一个基于用户数据报协议udp和实时传输协议rtp的简单传输协议，实际应用中保证了数据的实时性和同步性；系统采用基于显示同播的事件同播方式，这样在一定程度上降低了数据冗余，同时扩大了系统的用户数量。
In this paper , we put forward an architecture model to descript distributed real - time system , and advance a real - time transmission protocol , following we try to apply a method to enhance the real - time performance in distributed system , in the method we bind real - time operation system together with dynamic real - time transmission protocol to make use of their capability farthest , later we apply this method to naval chain of command 本论文的目的是研究和解决分布式系统的实时性问题，文中提出了一种分布式实时系统的结构模型，扩展了原有的通用实时传输协议，讨论了一种把实时操作系统和动态实时传输协议结合起来提高分布式系统实时性的方法，并在舰艇指控系统中进行了应用。
Secondly , the stream media , video conference technology based on ip network and voip technology were discussed , the real - time transport protocol ( rtp ) , the real - time transport control protocol ( rtcp ) , the real - time streaming protocol ( rtsp ) , and the resource reserve protocol ( rsvp ) ware studied deeply . and the project of the stream media , video conference based on ip network and voip proposed by microsoft were introduced , too 其次，讨论了流媒体( streammedia ) 、 ip视频会议和voip技术，对实时传输协议( rtp ) 、实时传输控制协议( rtcp ) 、实时流协议( rtsp )和资源预订协议( rsvp )进行了深入的研究，并且介绍了微软提出的流媒体、视频网络会议和voip解决方案。
The purpose is to adapt network condition , utilize network resource fully and get better qos in application layer . after the article introduce thoroughly moving image andsound coding standard mpeg - 4 , it analyses the real - time transmission protocol , ip multicast technology and directshow technology 文章中深入的分析了动态图像及伴音编码标准mpeg - 4之后，接着剖析了实时传输协议和ip组播技术， directshow技术。在这些技术的基础上，设计了该系统的结构模型，并利用c + +语言实现了该系统。
Besides the coding specification , avs also developed the file format and real - time transport protocol payload format specifications to enable the application of avs - m video in various services . this paper reviews the high - level coding tools and features of the avs - m coding standard as well as the file format and payload format standards 为了便于在各种实际应用系统中使用avs - m ，还制定了相应的文件格式第九部分第一子部分和avs - m实时传输协议real - time transport protocol , rtp打包格式第八部分第一子部分。
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 . it analyses the function of each software module 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视频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，提出了多媒体数字视频监控系统的硬件结构和软件结构通过设计相应的多媒体数字视频监控软件系统，分析了各个重要的软件模块的功能。
