现场可编程器件3-DES算法IP核的设计

介绍了DES和3-DES算法的概要,给出了一种电路实现模型,并基于Xilinx公司的FPGA器件设计了IP核,描述了IP核设计中主要模块的设计方法.     

SoC FPGA的视觉算法加速系统设计

提出一种基于Altera SoC FPGA进行硬件加速的方案,该方案为运行在ARM端Linux系统的视觉算法利用FPGA进行加速提供传输通道.首先把ARM端的图像数据传输到FPGA部分的SDRAM中,接着控制FPGA相关IP核读取SDRAM中的数据,然后视觉算法IP核接收图像数据并对其进行加速处理,最后把处理后的图像数据通过特定的IP核传回Linux系统.实验验证了该方案的可行性、可靠性和加速性能.     

硬件编程方式下通信协议加密芯片的设计研究

针对分布式测控系统数据加密传输的应用要求,通过对DES算法和Modbus协议原理分析,给出了整个设计的原理框图,使用Verilog HDL实现了DES算法和通信协议的IP核设计,最后对测控数据进行加密传输测试,结果显示该方法能较好的满足数据实时加密通信的指标要求,整个设计具有较好的现实意义和应用价值.     

3DES密码卡的设计与实现

以EP1S20F672C7为核心，利用PLX9054作为密码卡与主机交换数据的接口芯片，采用多个硬件线程并行处理实现3DES算法，设计了3DES密码卡。介绍了硬件的构成、原理图的设计、底层软件的编程以及密码算法IP核的开发。所设计的IP核具有很高的灵活性，可同时处理1～53个任务。     

基于SOC/IP的智能传感器设计研究

提出了基于SOC/IP的智能传感器的设计方法.在分析传感器IP功能复用基础上,设计了构成智能传感器芯片的数据采集、信号处理、数据通信、人机界面、任务调度等一系列IP核模块.通过在FPGA及ARM7微处理器上的硬件实现仿真,验证了设计方法的正确性.利用IP功能复用,只需重新设置任务调度IP核,就能设计出用于各种传感器的智能化片上系统,构成智能传感器.     

一种基于FPGA的PCI加密卡设计

利用FPGA设计实现了一种基于PCI总线接口的纯硬件加密卡,为PC机提供加密、签名等服务。对采用VHDL描述的PCI接口IP软核及其应用方法进行了分析;采用VHDL设计了3DES、MD5等算法模块,并设计了其与PCI接口IP核之间的通信控制模块;利用QuartusⅡ进行仿真、综合后,下载到加密卡上的FPGA配置芯片,将上述各个模块集成在一片FPGA上予以实现;最后,采用VC++为加密卡设计了驱动程序和测试程序,并对整个加密卡工作进行了功能测试。     

基于ASIC的有效DES/3DES流水线设计

介绍了DES和3DES算法，在此基础上给出了一种有效的流水线设计方法，该方法综合了面积和效率的考虑，通过FPGA的验证，证明其具有较强的实用性。     

基于ARM Cortex-M3核的SoC架构设计及性能分析

主要研究了基于ARM Cortex-M3核的SoC设计方法及不同架构对芯片整体性能的影响。首先从Cortex-M3的结构特点尤其是总线结构特点出发,分析了基于该核的SoC架构设计的要点。然后通过EEMBC的CoreMark程序,对实际流片的一款Cortex-M3核芯片进行了性能测试,并与STM32F103 MCU的测试结果进行了对比,通过实例说明了不同芯片架构对性能的影响。最后,对影响SoC芯片性能的因素,包括芯片架构、存储器速度、工艺、主频等进行了分析和总结。     

基于FPGA的CORDIC算法通用IP核设计

分析CORDIC算法原理,设计出了迭代结构和流水线结构的CORDIC算法IP核.根据不同的初值可以实现正弦、余弦、双曲正弦、双曲余弦、反正切等三角函数,也可以通过组合实现对数、指数等复杂函数.最后对两种结构的IP核在速度、资源占用方面进行了对比.     

3-DES IP核的VerilogHDL设计

首先介绍了3-DES算法的加密/解密原理,在此基础上,采用流水线技术,设计了一种高速的3-DES加/解密IP核,并用VerilogHDL语言描述其中的各个模块。为了能更好地与其他IP核互联,为该IP核设计了输入输出控制信号,同时将其下载到FPGA中进行验证,获得了良好的性能。     

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。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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.     

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。     

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.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

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     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.