基于VERILOG—HDL的简化异步收发器的设计与仿真

该文阐述了通用异步收发器（UART）异步串行通信原理,介绍了实现UART异步串行通信的硬件接口电路及各部分硬件模块。该文基于Verilog语言实现了接收器和发送器这两个UART的内部核心功能模块,通过Modelsim对相应Verilog-HDL程序的仿真,验证了其异步串行数字接收和发送的功能。     

基于FPGA的UART IP核设计与实现

本文设计了一种基于FPGA的UART核,该核符合串行通信协议,具有模块化、兼容性和可配置性,适合于SoC应用.设计中使用Verilog HDL硬件描述语言在Xilinx ISE环境下进行设计、仿真,最后在FPGA上嵌入UART IP核实现了电路的异步串行通信功能.     

基于VERILOG-HDL的简化异步收发器的设计与仿真

该文阐述了通用异步收发器(UART)异步串行通信原理,介绍了实现UART异步串行通信的硬件接口电路及各部分硬件模块。该文基于Verilog语言实现了接收器和发送器这两个UART的内部核心功能模块,通过Modelsim对相应Verilog-HDL程序的仿真,验证了其异步串行数字接收和发送的功能。     

基于FPGA的通用异步串行接口IP软核设计与实现

设计了一种基于现场可编程门阵列(FPGA)的通用异步串行控制器(UART)的IP核,该核符合串行通信协议,具有可重配置、可扩展性、灵活性、兼容性、功耗低的优点,适合于SOC应用。设计使用Verilog HDL硬件描述语言在QuartusII环境下进行设计、综合、布局布线,在Model Sim下仿真,最后在FPGA上嵌入UART的IP核实现异步串行通信功能。     

基于FPGA的视频图像处理器的串行通信设计

提出了一种在FPGA上实现视频图像处理器分系统与系统之间的数据串行通信设计方法,采用UART串行数据传输协议,传输波特率可设置调整,采用视频场同步信号作为发送器发送控制信号,实现视频图像处理的实时性要求。串口采用双口RAM实现与视频图像处理部分的异步通信。设计中大量采用参数化设计,使用灵活、通用性强,可实现FPGA与一般串口通信系统通信。设计程序下载到FPGA芯片中,通信数据完全正确,电路工作稳定、可靠。     

基于FPGA的简化UART电路设计

本文阐述了通用异步发生器UART的功能特点,介绍了用硬件描述语言Verilog来开发各个模块,并给出仿真结果.本设计使用Ahera的FPGA芯片,将UART的核心功能嵌入到FPGA内部,能够实现异步通信的功能,可以将其灵活地嵌入到各个通信系统中.     

一种基于TMS320C55x DSP的UART通信设计

全双工异步串行通信在TMS320C55xDSP上的通常实现方式是利用DSP的McBSP接口加外接芯片实现,这种设计方法增加了实现UART的硬件成本和电路设计复杂度.提出了一种直接利用DSP的MCBSP接口和DMA通道实现UART的方法,给出了使用C语言和CSL的编程方法.与传统实现方法相比,具有实现成本低,硬件电路简单,移植性强等特点,稍加修改可应用于C5000和C6000各系列芯片中.     

基于单片机和CPLD的串行通信帧协议转换系统

介绍一种基于MCS51单片机和Altera公司的MAX7000S系列CPLD的全双工异步串行通信帧协议转换系统的设计与实现.重点介绍了异步串行通信收发器(UART)的CPLD实现;以及单片机在未知待接收串行通信帧的帧长和界定符的情况下,对串行数据流按时域分帧的方法.     

利用80C196MC PTS 实现异步串行通信

异步串行通讯在单片机通讯中占据了相当重要的地位,因此大多教单片机都配备了UART来支持异步通讯.当单片机不支持UART时,利用别的方法实现异步串行通信就显得非常有意义.本文在分析异步串行通信规范的基础上,总结了实现异步串行通信的条件.然后深入讨论了80C196MC外设事务服务器实现异步串行通信的机理和时序.最后就异步串行通信编程实现中的一些要点和难点进行了分析.     

带硬件地址识别的UART IP的设计和实现

在通信和控制系统中,常使用异步串行通信控制器(UART)实现系统辅助信息的传输。为实现多点通信,通常用软件识别发往本站点或其它站点的数据,这会加大CPU的开销。介绍了一种基于FPGA的UARTIP,由硬件实现多点通信时的数据过滤功能,降低了CPU的负担,提高了系统性能。     

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。     

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。     

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.     

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.