基于LPC2294嵌入式系统的时钟显示设计

LPC2294是飞利浦半导体公司生产的基于ARM7TDMI-S内核的芯片,本文介绍了一个基于LPC2294的完整的时钟显示设计工程,给出了启动代码以及时钟显示的应用程序的主要函数说明。其中的启动代码主要函数可供一般的基于ARM7TDMI-S内核的嵌入式处理器芯片参考使用。     

两款基于ARM7TDMI典型芯片启动流程的分析与比较

本文通过对SAMSUNG公司的两款基于ARM7TDMI内核的具有代表性的芯片S3C44BOX和S3C4510B的启动流程代码设计的比较。分析了这两款芯片在启动流程中各自的特点,加深了对嵌入式系统不同处理器的启动流程的理解     

基于ARM核的Bootloader代码的分析与设计

Bootloader是系统上电或复位后首先运行的一段代码,Bootloader代码(即启动代码)的好坏对整个系统的运行效率有着重要的影响,而Bootloader代码与芯片的特性有着紧密的联系。本文根据用LPC2210在ADS(ARMDeveloperSuite)开发环境下进行嵌入式系统设计的实际经验,总结出基于ARM7TDMI内核的LPC2210处理器的Bootloader代码设计的详细流程及其中的一些关键技术和代码     

ARM7TDMI-S在嵌入式系统中的Bootloader代码设计

ARM7TDMI-S是ARM公司设计的一款32位精简指令集处理器内核,LPC210x系列是飞利浦半导体公司生产的基于ARM7TDMI-S内核的芯片。在嵌入式系统设计中,针对嵌入式处理器和操作系统的Bootloader代码的设计是一个难点。本文根据用LPC2106进行嵌入式系统设计的实际经验,总结出基于ARM7TDMI-S内核的嵌入式处理器芯片的Bootloader代码设计的一般流程;给出LPC2106芯片在基于μC/OS-II操作系统的嵌入式应用中,BootLoader程序的详细设计流程及其中的一些关键技术和代码。     

基于ARM的CAN总线智能节点的设计

CAN总线是一种应用广泛的实时性现场总线,提出了基于具有ARM7TDMI内核的32位微控制器的CAN总线智能节点设计方案。详细介绍了ARM控制器(LPC2294)的特点、智能节点的结构以及系统软件设计,同时结合现场实际使用给出了硬件抗干扰措施。     

两款基于ARM7TDMI典型芯片启动流程的分析与比较

本文通过对SAMSUNG公司的两款基于APM7TDMI内核的具有代表性的芯片S3C44BOX和S3C4510B的启动流程代码设计的比较.分析了这两款芯片在启动流程中各自的特点,加深了对嵌入式系统不同处理器的启动流程的理解     

LPC23xx的自适应以太网通信接口设计

以太网接口是嵌入式系统进行以太网通信的硬件基础。随着微电子技术的进步,许多嵌入式控制芯片集成了以太网控制器,这使得嵌入式系统中以太网接口的开发更为便利口^[1]。LPC23xx是NXP半导体公司（由Philips公司创建）于2006年12月前后推出的基于ARM7TDMI—S内核的微控制器,与LPC21XX和LPC22xx相比,最为突出的特点是片上集成了10 Mbps／100 Mbps以太网控制器。     

基于LPC2294的CAN总线智能节点设计

CAN总线是一种应用广泛的实时性现场总线.本文提出了一种基于具有ARM7DMI内核的32位ARM微控制器LPC2294的CAN总线智能节点设计方案.详细介绍了ARM微控制器LPC2294和隔离CAN收发器CTM1050T的特点,给出了智能节点的硬件结构以及软件设计,同时结合现场实际使用给出了硬件抗干扰措施.     

上海复旦微电子公司获ARM7TDMI授权用于消费电子产品

2003年12月17日ARM公司宣布:上海复旦微电子股份有限公司已通过ARM代工计划,获得ARM7TDMI微处理器内核授权。上海复旦微电子将采用ARM内核技术设计开发低功耗、低费用的音频、成像多媒体处理器,运用于消费电子产品中。该多媒体处理器将在中芯国际(SMIC)投片生产。结合ARM7TDMI内核面积小、功耗低的技术优势和中芯国际的本地制造能力,可以减少产品的上市时间。ARM向上海复旦微电子提供ARM7TDMI内核授权,展现了ARM公司向国内的无晶圆芯片设计厂商和代工厂商提供的灵活、赋有竞争力的业务模式的价值。通过ARM代工计划这样的…     

LPC2131基于CPLD的CAN接口设计

引言 Philips公司的LPC2131是基于ARM7TDMI—S的高性能32位RISC微控制器。它具有ARM处理器的所有优点——低功耗、高性能和较为丰富的片上资源,但LPC2131内部没有集成CAN控制器,而无法利用CAN总线来进行通信。为了使得LPC2131能够利用CAN总线进行通信,可以通过外部扩展来实现其功能。目前,比较普通的方法是在LPC2131的外部采用CAN控制器设计CAN总线接口。LPC2131与CAN控制器的接口电路如图1所示。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。