In chapter 2 , we focus on the kernel preemption strategy and scheduling algorithms . for the kernel preemption , we will examine two improved schemes and patches , with emphasis on the analysis of the inserting - preemption - point scheme . with respect to the scheduling strategy , we will discuss the process schedule scheme used by linux 2 . 4 . 18 , as well as two classical algorithms for real - time scheduling 接着本文从linux的内核抢占和调度机制上进行了重点分析和研究：在内核抢占方面，分析了改进可抢占性的两种方案及补丁，其中重点分析了插入抢占点的方案；在调度机制方面，分析了linux2 . 4 . 18的进程调度部分，讨论了两种经典实时调度算法。
Studying on the schedule method of real - time os and linux , a novel linux real - timing schedule based on process schedule modification method is proposed . two real - time schedulers based on linux , edf and rms , are designed and realized . we solved the problems of the coarse - grained timer of linux by increase its temporal granularity 通过对实时操作系统调度策略的研究和对linux进程调度策略的分析，本文提出了基于改造进程调度策略的linux实时化方案，设计了基于linux的实时调度器? ? edf和rms调度器，并讨论了采用细粒度定时器的机制来解决linux系统中固有的系统时钟粒度大的问题。
This paper also takes special research on such a series of questions as below : the development of embedded operating system ( os ) , the advantages of linux os to develop embedded os are analyzed , the development of embedded linux os is studied from the kernel making , customizing file system , and system booting . the embedded image processing application technology , a focus is taken on the research of the relation between embedded system application technology and image processing technology when the embedded image processing application development is carried out , the new development of image processing technology in embedded system environment and the features of embedded system of image processing application are analyzed . graphic user interface ( gui ) , the current popular gui technology is introduced , and the main features of them and the reasons to choose minigui are analyzed , the implementation of minigui and the method to develop graphic application based on minigui are studied , too , it works well in practical application 本文在此背景下，围绕在实施导弹打击过程中涉及到的有关图像处理设备的嵌入式化过程，对于嵌入式图像处理系统应用技术进行了全面的研究，提出了嵌入式图像处理系统的开发流程和步骤，并对其中的一系列问题进行了专门研究，在实例应用中取得了很好的效果，这些问题包括：嵌入式操作系统开发，分析了使用linux操作系统进行嵌入式操作系统软件开发的优越性，并且从内核定制、文件系统裁剪、系统启动等几个方面研究嵌入式linux操作系统的开发；嵌入式图像处理应用技术，着重研究了嵌入式系统应用技术和图像处理技术在进行嵌入式图像应用开发时的相互影响，分析了在嵌入式系统环境下图像处理技术的新发展以及在图像处理应用中嵌入式系统的一些特点；图形用户界面，介绍了目前集中流行的gui技术，并分析了其主要特点以及采用minigui的原因，研究了minigui的实现原理，以及如何进行基于minigui进行图形应用程序的开发，在实际应用中取得良好效果；实时性研究，分析了在操作系统中影响系统实时性能的因素，研究了linux操作系统的几种实时解决方案，并对于操作系统的进程调度机制进行了有针对性的研究。
To achieve this aim , we give a model , named java channel , which is based on the csp concept . then , the paper analyzes some relative fields , such as process scheduling , memory management , synchorous / asynchorous communicating , asynchorous event handling , and real - time garbage collection . by providing these , the real - time capabilities of java programs can be highly improved , and can make up the some shortcomings of rtsj 为了达到这种目的，在java工程师开发出的实时java规范( rtsj )的基础上，提出基于csp概念的java通道，并在进程调度、内存管理、同步异步、异步事件处理、实时垃圾回收等方面进行了研究和扩充，使其能够在一定限度内满足应用的实时要求，弥补了rtsj的一些不足和缺陷。
According to the middleware oriented message , called smq , we analysized the implement principle , design approach and application of it . we introduced the design and implement of visualframe . net subsystem , process scheduling subsystem and report subsystem through the developed product . we also addressed the key technology including xml , mvc , middleware and several design patterns and the importance of mom during development 论文根据作者在实际项目中的开发成果，全面介绍了利用smq开发的visualframe . net画面框架、进程调度及报表子系统的设计及实现，重点分析了消息中间件在开发中的重要地位和在plature项目开发中使用的中间件、 xml 、 mvc框架及多种设计模式等核心技术。
First , we introduced the basic operation princinple of a - t - m & c - s and its function modules . subsequently , we divided the system into six major modulars : real - time clock function modular , real - time process schedule modular , distribute db management modular , net - work monitor modular , message control modular , and mistake torlerance modular 按中间件特性，把系统划分为6个主要的管理控制模块，分别为实时时钟管理模块，实时进程调度管理模块，分布式数据库管理模块，网络监控模块，消息管理模块，和系统容错管理模块。
