基于RTP协议的移动视频监控系统的设计

无线移动网络环境稳定性较差,需要研究如何自适应有效带宽的动态变化,以获得最佳的视频监控效果。H．264是高压缩比的视频编解码标准,相同条件下需要的传输带宽更少。RTP/RTCP协议专为实时数据的传输而设计。本系统中,视频采集终端用RTP协议封装和发送H．264数据,用RTCP协议接收网络传输质量信息,自适应调整发送速率;监控平台对收到的数据进行整理和过滤,确保视频图像的正确播放。实验表明该设计在无线移动网络环境下,视频监控效果良好。     

企业移动办公通用平台的设计与实现

企业移动办公通用平台是利用计算机、互联网、3G网络与无线通信技术、视频监控技术,通过统一综合平台,打造包含企业介绍、通信录、视频监控、电子公告、你云我云、邮箱、网络硬盘等功能的移动应用专家,实时向企业客户反馈企业公告、视频监控等情况,实现企业员工之间方便快捷、实时沟通的信息互动平台。     

基于ARM的水域移动视频监控平台控制系统的设计

该文介绍了一种基于ARM的水域移动视频监控平台控制系统的设计和实现方法。经测试,该监控系统工作稳定并已成功应用于相关视频监控领域。为了实现水域移动视频监控平台的移动性、方便性、可操作性,设计了基于水域移动视频监控平台的控制系统。首先分析了该视频监控平台控制系统的优点,并简单介绍了系统的总体设计及模块功能,然后重点介绍了基于ARM芯片为内核,采用嵌入式系统设计和实现方法,最后分析了测试效果。实现视频监控、平台控制等功能。该设计针对性强,功能实用,稳定性可靠。     

基于ARM11和Linux的网络视频监控系统

论述了一种基于ARM11和Linux平台的网络视频监控系统实现方案。介绍了网络视频监控系统的总体架构,重点论述了视频Web服务器的硬件和软件设计,包括服务器的硬件结构、Linux的移植以及MJPG-streamer的移植。该系统采用B/S模式,以高性能的S3C6410处理器作为视频Web服务器;视频监控终端可以是手机和平板PC等移动终端,也可以是PC等固定终端,采用有线或者无线的方式进行实时视频监控。测试结果表明,系统运行稳定可靠,固定终端和移动终端获取的实时视频图像清晰流畅,无失真和抖动现象,取得了较好的实时视频监控效果。     

视频监控系统安卓采集端通信框架设计和实现

通信技术与移动网络的不断发展,使得视频监控系统日益成熟,被广泛应用于城市交通、消防安全与学校管理等不同的领域。基于移动网络的信息传输优势,移动视频逐渐成为现阶段视频监控系统发展的主流,为了进一步优化移动视频监控系统的技术表现,文章以安卓系统为核心,着力打造基于安卓操作系统的视频监控系统通信框架,实现视频采集、信息数据系统与监控端的有效衔接,构建起科学、高效、快捷、稳定的移动视频监控通信框架体系。     

移动视频监控业务技术方案分析

移动视频监控业务结合视频监控业务和移动网络二者的优点,能为用户带来全新的业务体验,将为运营商开辟新的移动增值业务市场。本文分析移动视频监控业务的技术原理,详细介绍了一种基于移动流媒体平台实现移动视频监控业务的可行性解决方案,该方案可为运营商节省系统建设和业务运维成本。     

环境感知自动巡航无人车设计

针对自然保护区的生态监测问题,以弥补无人机监控空白与提高监测数据多样性为目标,设计了自动巡航机器人。机器人采用百度地图规划作业路径,巡航依赖惯性导航,并且支持地图定位;设计侵入式雷达传感系统,通过Zig Bee节点传输信息,以机器人为中继节点,传回移动监控端后,汇至云平台供用户查看;通过智能手套控制机械臂,实现对传感器节点的回收和放置;通过虚拟控制手柄远程控制摄像头,并将视频信息至移动终端。测试结果表明,系统各项测试可靠率均在90%以上,该系统可实现高效的环境检测和科学的环境管理。     

基于SVAC视频标准的3G智能手机监控平台设计

为满足个人随时随地实施视频监控的需求,设计了一种3G智能手机视频监控平台。在分析移动视频监控系统的总体结构基础上,着重阐述了手机客户端监控软件开发方法、监控视频的传输模式和传输协议。它采用专用的安防视频标准SVAC以满足安防要求;客户端多画面播放以实现多路监控,多线程编码以提高软件运行速度。搭建的原型试验系统表明能实现流畅稳定的实时监控。     

基于SVAC视频标准的手机监控客户端设计

为满足个人随时随地实施视频监控的需求,设计了一种3G智能手机视频监控平台。在分析移动视频监控系统的总体结构基础上,着重阐述了手机客户端监控软件开发方法、监控视频的传输模式和传输协议。它采用专用的安防视频标准SVAC以满足安防要求;客户端多画面播放以实现多路监控,多线程编码以提高软件运行速度。搭建的原型试验系统表明能实现流畅稳定的实时监控。     

基于android移动视频监控系统客户端的研究与设计

移动视频监控技术是无线网络技术、流媒体技术以及视频监控技术等多种技术融合的产物.在多种技术融合的背景下,提出一种面向智能交通的移动视频监控系统的设计方案,侧重对Android平台视频监控客户端进行研究与设计,并对涉及到关键技术展开研究.最后,在Android 2.3平台上进行测试,结果表明,该客户端能够满足远程视频监控的需求.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first