TFT-OLED驱动电路的研究

从OLED的发光原理出发,介绍了OLED器件的结构特点和常用的TFT OLED像素电路的结构。利用TFT OLED行列驱动芯片和控制芯片,通过MCS 51单片机的控制来驱动240×320×3点阵的TFT OLED屏,实现大信息量的图形显示。该设计方案所需外围器件少,硬件结构简单,有利于提高系统的运行效率。介绍了驱动模块的功能和硬件接口电路的设计方法,并给出了单片机的软件流程图。     

基于单片机的全彩OLED驱动控制电路

根据有机电致发光显示器件(OLED)的特性,以Philips单片机P89C51RD2为核心,集成了OLED驱动控制器SSD1338U2和外围电路,设计了一种OLED驱动控制电路。从系统硬件接口设计以及系统软件流程等方面介绍了该OLED驱动电路,结合硬件接口原理图,实现了分辨率为128×128、65 k色的全彩色图片显示。     

基于嵌入式Linux和S3C2410的远程CCD图像采集系统

综合应用DSP、嵌入式WEB服务器、光纤以太网、ActiveX等技术,开发了一种以嵌入式Linux和S3C2410为开发平台,实现了远程智能化的CCD图像采集系统.首先介绍了系统的硬件结构及硬件接口,接着介绍了本系统的软件部分,主要包括开发环境的建立以及基于Linux的外设接口驱动设计、系统应用程序的设计与实现.最后给出了该系统的实际效果图.     

面源红外目标模拟器硬件系统设计

面源红外目标模拟器是红外成像导弹导引头性能测试必不可少的部件。通过需求分析,利用PCI技术、FPGA芯片、SRAM芯片和DA芯片搭建了一个硬件驱动系统,用来实现驱动电阻阵列芯片的产生红外辐射的功能,同时对系统中的PCI接口芯片、FPGA芯片、SRAM芯片、DA转换芯片和电阻阵列芯片的选型进行了详细分析,并且对硬件系统涉及的FPGA外围电路、PCI接口电路、SRAM接口电路和DA转换电路进行了设计。     

嵌入式DSP在电机控制中的应用

介绍基于嵌入式DSP电路TMS320LF2401A的电机控制系统中的主控部分与驱动部分之间的通信。详细介绍通信的硬件接口电路、通信协议及软件实现方法，实现了两部分的异步通信。实验结果证明了其可靠性。     

基于DSP+单片机的主从式智能轮椅语音控制系统

设计了一种以凌阳公司SPCE061A单片机为语音信息处理器,以DSP为驱动控制器的主从式智能轮椅语音控制新方案。采用SPCE061A单片机进行语音指令的训练、识别和处理,DSP作为驱动电机转动的PWM控制信号发生器,SPCE061A单片机和DSP之间通过SCI接口电路进行通信。详细阐述了智能轮椅语音控制系统各部分硬件结构及系统总体软件实现,重点讨论了电机驱动电路的硬件设计和系统软件流程。实验结果表明,研制开发的智能轮椅语音控制系统能够在语音或手动模式下实现轮椅的多种运动,语音识别正确率高于95%。     

单片机控制OLED显示全彩色静态图片和动态图像的系统设计

根据有机发光二极管器件(OLED)的特性,利用单片机C8051F020和驱动芯片SSD1332,设计OLED的控制显示电路。从组成框图、硬件设计以及软件流程等几方面介绍了该OLED的驱动电路,给出了硬件接口电路图。利用该电路系统可以实现全彩色静态图片和动态图像显示,通过软件方式实现了产生动画和动画显示。在静态图片显示中,显示频率可以达到26.3Hz;在动态图像显示中,显示频率可以达到14.5Hz。利用单片机控制OLED的显示,可大大降低OLED彩色显示的成本,优化了OLED显示器件的驱动电路。     

利用FPGA的全彩OLED显示器控制电路

根据有机发光二极管(OLED)的特性,利用解码模块和FPGA控制模块,设计OLED视频动态图像驱动控制电路。介绍了如何采用FPGA实现OLED视频显示控制电路的方法,分析了电路中各个模块的作用及整个电路的工作过程。从组成框图、硬件设计以及软件流程等几方面介绍了该OLED的驱动电路,给出了硬件接口电路图。其中,FPGA由硬件描述语言(VerilogHDL)设计了控制电路,从DVI接口获取动态图像,获得了能实时动态显示的3.8cm(1.5in)128×(128×3)全彩色PM-OLED显示屏显示。     

数字永磁同步交流伺服系统

数字永磁同步交流伺服系统以DSP＋CPLD为处理核心．由控制处理器电路、验动控制电路、驱动接口电路和功率放大电路组成。本系统采用空间电压矢量脉宽调制技术,实现三相永磁同步电机的控制。本文介绍了数字交流伺服系统的实现原理、硬件和软件设计。     

基于ARM7的人机接口模块设计

设计了一种基于ARM7的小电流接地故障选线装置的人机接口模块．说明了模块的结构和工作原理。硬件上给出了液晶接口电路和按键接口电路,分析了键盘和LED驱动芯片ZLG7290的工作原理;软件上采用结构化的程序设计方案,并结合工程要求,分层设计,逐步细化,来实现人机交互功能,同时对界面作了简单介绍。     

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.     

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.     

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.     

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.     

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.     

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.     

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