共查询到20条相似文献,搜索用时 0 毫秒
1.
Mode S system design and architecture 总被引:1,自引:0,他引:1
Baker J.L. Orlando V.A. Link W.B. Collins W.G. 《Proceedings of the IEEE. Institute of Electrical and Electronics Engineers》1989,77(11):1684-1694
2.
Hardware architecture design of video compression for multimedia communication systems 总被引:1,自引:0,他引:1
《Communications Magazine, IEEE》2005,43(8):122-131
3.
随着多媒体技术的发展,视频采集与传输系统已经成为诸多领域的一项核心技术.文章介绍了一种基于S3C2410处理器和嵌入式Linux的视频采集与传输系统,通过USB摄像头获取实时视频,并利用以太网进行传输.整个系统建立在嵌入式结构上,能够独立完成实时视频的采集和传输功能,取得了满意的效果.该系统可广泛应用于远程监控系统、可视电话、工业控制等领域. 相似文献
4.
5.
6.
Distributed interactive video system design and analysis 总被引:1,自引:0,他引:1
The interactive video (IV) market has been expected to capture a significant share of the huge potential revenues to be generated by the business and residential markets. The level of revenues generated depends on the completion rate of calls the service provider can support, no matter what the IV system or network condition. Thus, a cost-effective, scalable fault-tolerant IV system is needed to maximize the video call completion rate at an affordable cost. This article describes design methodologies for a scalable, fault-tolerant IV system and an IV system design and analysis research prototype called IVSDNA (IV System Designer and Analyzer). The IVSDNA prototype is designed to help network planners and engineers to evaluate quantitative trade-offs (in terms of network communications costs, video storage costs, and degree of system fault tolerance) between two major IV system architectures (centralized and distributed) with a variety of video distribution methods, replication strategies, and fault-tolerant access protocols 相似文献
7.
8.
详细阐述了所研制的一个24位真彩色视频叠加系统的基本工作原理,同时介绍了系统主处理芯片TMS34010的主要特点,着重探讨了该系统软件开发的基本思路和TMS34010软件的开发环境,最后给出了该系统软件的主要模块和软件设计流程。 相似文献
9.
10.
《现代电子技术》2017,(21)
为了实现视频监控的实时传输和网络控制功能,提出基于Web架构拓扑控制的视频监控系统。该系统分为三层体系结构,分别为感知控制层、网络传输层和应用服务层。采用自适应差分调制技术进行视频的量化编码,设计优化的视频编码算法降低视频传输延时和保证良好的输出品质。采用集中式拓扑和分布式拓扑相结合的方式进行视频监控多媒体拓扑控制,构建Web服务器的信令,进行服务器结构优化设计,在RTP协议栈下进行Web视频监控系统的API接口设计,实现视频监控的输出控制。实验结果表明,该系统能提高监控视频传输的保真率,丢包率较低,输出延时较小,保证了视频监控输出的质量和实时性。 相似文献
11.
12.
随着科技不断发展,我国的公共安全领域也在不断加强科技化水平改革,使用更好的科技产品进行工作辅助,为社会稳定,人们生活安全提供保障。警务视频实战应用平台就是综合应用多项先进技术的科技辅助平台。本文通过笔者多年的公安工作经验进行需求分析,并对警务视频实战应用平台进行功能分析,对如何使用该平台更好的开展警务工作并提出一些建议,望与业内同仁交流学习,能更好的促进视频技术在公共安全领域发光发热,提高公安指挥调度的信息化水平。 相似文献
13.
Tung-Chien Chen Hung-Chi Fang Chung-Jr Lian Chen-Han Tsai Yu-Wen Huang To-Wei Chen Ching-Yen Chen Yu-Han Chen Chuan-Yung Tsai Liang-Gee Chen 《Circuits and Devices Magazine, IEEE》2006,22(3):22-31
In this article, we suggest some techniques to design the H.264/AVC video coding system for HDTV applications. The design exploration is made according to software profiling. The design considerations of system scheduling and pipelining are discussed followed by the architecture optimization of the significant modules. The efficient H.264/AVC video coding system is achieved by combining these techniques. 相似文献
14.
要想强化企业信息系统安全,为此选取广域网的视角进行大型分布式监控管理系统的研究开发,借助多线程、SOA架构等技术,将多种同步、共享、存储分布式系统的终端与管理中心之间存在的问题有效解决,以便可以实时接活与过滤控制远程数据包、实时统计在线主机、监控所有主机动态端口、流量检测广域网络所有网段等功能. 相似文献
15.
Software mechanisms that make use of analog transmission and storage of video for computer-controlled video communication and file storage are described. The authors extended the Etherphone voice management system to support video conferencing and file storage. The software mechanisms for conference management consist of a central connection manager, and video and user interface agents running on client workstations. A conferencing architecture that supports multiplicity in the number of conferences and media is presented. The video file server stores and retrieves full-motion video information within conferences. It uses optical disks to store video frames and builds a high-level file and directory interface. The user interface to the directory interface is a multimedia document editor that permits video annotations to be freely interspersed with text. The performance of the system, which spans multiple media networks, has been highly satisfactory 相似文献
16.
17.
18.
A custom news service is analyzed. A service provider prepares and distributes daily news programs customized to subscriber interest. The customers may ask for their program any time in the evening, but may have to wait for a few minutes until their program starts. This service is modeled, and a network architecture that can support it is proposed. Popular material is stored closer to the customers, which decreases the load on the network. The delay that customer requests experience is addressed. Three approximate techniques capture the behavior of the system and are used for designing the network. It is shown that the service rate of the system should be approximately equal to the arrival rate so that the performance of the system is acceptable and the service is as economical as possible 相似文献
19.
基于DSP视频图像采集处理系统设计 总被引:1,自引:0,他引:1
随着实时图像采集处理要求的不断提高和大规模集成电路的迅速发展,传统的图像采集系统速度慢、处理功能简单、采用分立元件、电路非常复杂;而且可靠性差、不易调试、不能很好地满足特殊要求.本文从目前国内外图像现状分析出发,设计了一种改进型的视频图像采集处理系统,给出了系统的硬件电路设计及软件流程设计,经仿真测试满足系统指标要求. 相似文献
20.