ARM9平台下的CMOS图像传感器数据采集系统

设计了一种基于S3C2410的图像数据采集系统。分析了系统组成模块的基本原理、各模块间硬件接口电路设计和软件实现。系统采用S3C2410芯片上的IIC总线接口和DMA(直接存储器存取)控制器,以DMA方式传送图像数据。实验表明,系统功耗小,图像数据采集效果良好。     

基于ARM和GPRS的无线传输与接收

介绍了一种基于GPRS的远程无线数据采集系统的总体结构,构建了以嵌入式ARM处理器S3C2410为核心,结合GPRS无线传输模块MC35i开发的无线数据传输系统的设计方案。     

基于ARM9的嵌入式系统研究及设计

为适应嵌入式技术在现代工业及电子等更多领域的广泛应用,通过对ARM9嵌入式微处理器芯片S3C2410的研究,设计出基于S3C2410核心板的嵌入式系统开发底板,更多的需求及功能可在其底板上进行扩展与实现.首先对ARM9嵌入式微处理器S3C2410进行介绍,然后给出了基于S3C2410核心板的嵌入式系统开发底板的设计与功能扩展,包括开发板总体设计,电源模块设计,各种通信模块设计如串口、JTAG接口、网络接口、CAN总线通信接口等.该模板的设计实现了嵌入式系统在更多更广泛领域应用的灵活性.     

基于CATV的家庭远程医疗监护系统

提出了一个由ARM系列微处理器S3C2410和CATV调制模块构成的家庭远程医疗监护系统.介绍了S3C2410及CATV调制模块的性能特点、系统的组成原理,以及主要外围接口电路的设计和软件设计架构,给出了CATV调制模块的软件配置方法.经过实验测试表明,系统在实际中取得了良好的效果.     

基于ARM的热泵热水系统测控模块硬件设计

介绍了具备除湿功能的热泵热水系统的工作原理,结合热泵热水系统的功能要求以及ARM芯片S3C2410的特点,采用了结构化、模块化的设计思想,实现了热泵热水系统测控模块的硬件设计,包括测控模块总体结构,S3C2410微控制器、人机接口、信号输入模块、信号输出模块、和通信模块等,实现了控制要求。     

基于DSP＋ARM的便携式电能质量分析仪设计

介绍了基于高性能DSP芯片ADSP21161和S3C2410ARM芯片实现的电能质量分析仪的设计方法。以DSP芯片为核心实现数据采集及处理,以S3C2410芯片为核心实现数据管理、人机界面及系统控制,同时采用WinCE嵌入式操作系统作为系统软件平台。该方案提高了系统的智能化及可靠性,降低了系统功耗并有利于系统扩展。测试结果表明该分析仪的各项指标均满足IEC电能质量测试标准。     

一种改进的嵌入式智能视频监控系统

提出了一种基于ARM系列微处理器S3C2410的智能安全监控系统.介绍了此系统的软、硬件构成,流程设计及主要模块的细节.经过实验测试,该系统监控效果良好.     

集成人眼检测安全预防的行驶记录仪系统设计

介绍了以三星S3C2410R处理器为核心,设计了一种基于Linux嵌入式系统的新型汽车记录仪.在传统记录仪基础上提出增加人眼检测模块,有效约束驾驶员不良驾驶习惯,防止疲劳驾驶,在被动记录事故数据基础上实现对驾驶安全的主动预防.系统总体包括数据采集、数据存储、串口和USB通讯、LCD显示、语音报警、人眼检测、上位机软件等.     

基于ARM 9的医疗手持信息终端电源设计

介绍基于ARM 9内核2410和基于USB接口RT2573的54 M无线网卡的医疗手持信息终端。主要硬件模块设计,包括S3C2410嵌入式系统主要模块、LCD显示模块、电池充放电保护模块。利用嵌入式系统通过USB无线网卡的扩展具备无线网络接入功能,同时在电池放电状态下无需外接电源维持3个小时稳定运行。     

基于S3C2410X的GPON用户终端的设计

首先简要介绍了GPON网络系统结构,在此基础上根据GPON协议和用户终端要求提出了基于S3C2410X的GPON用户终端整体结构,分别从单纤三向光学模块,光电收发模块,FPGA处理模块和微处理器模块这四方面对它进行阐述.重点论述了微处理器模块,包括嵌入式微处理器的选型,外围电路及应用接口设计和嵌入式微处理器S3C2410X软件平台的选择.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks