After abstracting and decomposing the system functions and structure , system block design , data structure and security issues are accomplished . the emphasis is placed on the investigation and realization of several key modules related to net - exam in this net - learning platform 在此基础上，对系统的功能结构进行提炼和分解，完成了系统功能设计、数据结构设计和系统安全设计，并重点研究实现了该支撑平台中与网络考试相关的几个关键模块。
Following this , the thesis research digital demodulation of qpsk and analyze the digitalizing means of key module . digitalizing demodulation arithmetic is given . the thesis also researched in phase ambiguity of coherent demodulation , and then brings forward a new method for settling phase ambiguity 而后研究了qpsk的数字化解调，分析了关键模块的数字化方法，给出了数字化解调算法，并研究了相干解调中的相位模糊问题，提出了一种解决相位模糊的新方法。
More specifically , this dissertation includes following contents : firstly , based on the analysis of h . 264 , the effect on coding efficiency by the key modules of h . 264 is analyzed . secondly , for the purpose of improving the efficiency of h . 264 encoder , we optimized the h . 264 arithmetic . especially fast motion estimation is improved by using hucmhgs ( hybrid unsymmetrical - cross multi - hexagon - grid search ) for integer pel motion estimation and using cbfps ( center biased fractional pel search ) for fractional pel motion estimation 主要工作包括: ( 1 )研究h . 264标准,分析编码器各模块及其采用的技术细节的计算复杂度,寻求提高编码速度的途经; ( 2 )对h . 264的jm82软件进行算法总体优化处理,尤其对于编码速度的瓶颈? ?运动估计进行改进,采用不对称多六边形网格混合搜索算法hucmhgs进行整数像素运动估计,采用带金字塔搜索模式的中心偏置分数像素搜索算法cbfps进行分数像素运动估计; ( 3 )结合tms320c6416的结构特点,在研究并行优化实现方法的基础之上,对h . 264算法的各个具体模块进行汇编语言编程实现。
The functional model and information model are built with idef base on the basic model for bom management . this dissertation thoroughly analyzes the key modules of bom management . the solution for computer coding is brought forth , and the dynamic model of process management is put forward , and the solution for static privilege management and dynamic privilege management is brought forward 然后以bom管理原理模型为基础，利用idef的方法建立了bom管理的功能模型和信息模型，并对bom管理相关关键单元模块进行了详细分析，提出了计算机编码的解决方案，给出了bom配置设计时使用的动态流程管理模型，并给出了bom管理的动态权限管理和静态权限管理的实现方案。
In this thesis , the optimization methods for video processing are analyzed with examples . then , the omplexity of key modules in h . 264 decoder is analyzed and discussed . optimization methods in integer transform , motion compensation and cavlc is proposed and implemented based on general processor 然后对h . 264解码器各主要模块进行了详细的分析和探讨，为降低计算复杂度、提高速度，在通用处理器开发平台上，提出了整型变换、运动补偿和变长解码等模块的优化思想，进行了探讨和研究，并对优化的结果作了比较和分析。
In system hardware platform design , after comparing and analyzing several kinds of dsps and fpga , we selected ti ' s c6000 dsps and xilinx ' s virtex - ii fpga as the core chips of the dsp + fpga hybrid architecture . and we designed the system with rich resource and good expandability . the platform design included the function design and the key modules design and the pcb design 在评估系统硬件平台的设计部分，在基于dsp + fpga的混合体系结构的解决方案基础上，对各种dsps以及fpga进行了比较与分析，选定了ti公司的c6000系列dsps和xilinx公司的virtex -系列fpga平台。
Analyzing and comparing several technology for embedded system networking both at home and abroad at present , we bring forward one scheme of embedded residential gateway based on embedded microprocessor and embedded operate system , then we design and realize the several key modules of this scheme 在研究分析了当前国内外主要的几种嵌入式系统网络化技术，并对其进行比较分析的基础上，本文进一步提出了基于嵌入式微处理器与嵌入式操作系统的嵌入式家庭网关方案。并对该方案的几大关键模块进行了设计并予以实现。
As a result , video sequence has rather relativity on time axis , motion estimation and motion compensate can reduce this relativity effectively , so it has been widely used in many video standards such as and mpeg , as a key module in video encoder , motion estimation is rather complex in computation 由于视频序列图像在时间轴上具有较强的相关性，运动估计( me )及运动补偿( mc )技术可以有效的减少时间相关性，因此该技术被广泛应用于各种视频压缩编码方案中如mpeg和h . 26x 。
Data structure and interface of key modules in prototype system are presented . the results from the experiments show that the expected performance is achieved and confirm the validity when the event detecting methods based on dynamic rules are applied to the complex timing constraints monitoring in distributed environment 为了检验本文提出的基于动态规则的事件检测方法的实际效果，我们结合开放源码的linux操作系统实现了网络文件系统监控的原型系统：原型系统的实验分析说明基于动态规则的事件检测方法对于分佃式文件系统监控是有效的。
Then , the paper discusses the theoretical foundation and relevant technology of e - business and erp integration , and analyzes the typical enterprise existing soft hardware environment and design object of the integration and present the global design of e - business and erp integrated mode based on web service , finally discusses the key module implementation techniques of e - business and erp integrated frame based on web service 然后，介绍了电子商务与erp集成的基础理论和相关技术，分析了典型企业现有的软硬件环境和集成的设计目标，在此基础上给出了针对制造型企业的基于web服务的电子商务与erp集成模式整体设计，并且探讨了基于web服务的电子商务与erp集成框架的关键模块实现技术。
