基于ARM的LCD图像显示系统设计

本文介绍了TFT-LCD的特点。进一步以ARM S3C2410作为处理器控制芯片,根据LCD图形显示设计流程,提出了S3C2410控制寄存器的设置方法。然后阐述了帧缓冲设备的层次结构和数据结构。最后在Linux操作系统下,实现了基于ARM的BMP及JPEG图像显示。     

嵌入式Linux下的LCD驱动程序设计与实现

从设备驱动程序的作用、分类及文件操作,对设备驱动开发的相关知识作了简单介绍。通过对LCD和Framebuffer原理的说明,以ARM处理器S3C2410嵌入式芯片为平台,设计了嵌入式Linux下的基于帧缓冲的LCD设备驱动程序。通过测试程序的编译运行,在LCD上显示了彩色条纹,完成了驱动设计的要求。     

基于嵌入式ARM的LCD图像显示系统设计

介绍了以ARM9处理器芯片S3C2410为基础搭建的LCD(液晶显示器)硬件电路,以及在此基础上移植嵌入式Linux之后,基于帧缓冲(Framebuffer)的LCD驱动程序的实现方法。讨论了Framebuffer的处理机制及底层驱动的接口函数,并针对具体的LCD面板,介绍了如何在μCLinux中编写帧缓冲设备的驱动程序。系统功能丰富,为各种扩展提供了基本的软硬件基础。     

Linux系统下基于S3C2410X的液晶显示驱动程序的研究

主要介绍Linux下基于S3C2410X的液晶驱动程序的研究与开发。首先详细介绍LCD控制器工作原理以及S3C2410X的LCD控制器及其管脚,同时给出LCD控制寄存器的设置规则。并根据系统中的液晶参数给出具体的硬件连接图,得到LCD控制寄存器的参数。然后介绍帧缓冲的工作原理,并说明了帧缓冲2个方面的实现,提出了一种适用于S3C2410X硬件的通用的液晶显示驱动程序的编写方法。开发了相应的驱动程序,得到很好的显示效果,可以稳定运行。     

基于ARM的图形用户界面软件开发平台的搭建

设计了基于三星S3C2410微控制器的TFT-LCD驱动控制系统,并将其与Micrium公司的μC/GUI图形用户界面整合在一起,形成了一个方便小巧的嵌入式系统应用软件开发平台.详细分析了如何利用ARM9的LCD控制器进行LCD的驱动,并介绍了将该驱动程序移植到图形用户界面μC/GUI的过程.     

ARM嵌入式系统的LCD驱动设计

ARM的RISC处理器广泛应用于各种数字系统中.文章以三星公司生产的S3C2410芯片为例,在阐述LCD屏显示原理的基础上,详细阐述了LCD驱动程序的设计,并给出了初始化程序,实现了液晶显示屏的驱动.     

基于S3C2410的触摸屏应用技术

S3C2410处理器是Samsung公司基于ARM公司的ARM920T处理器核,是当前32位嵌入式市场中应用较多的微控制器,基于S3C2410嵌入式微处理器的触摸屏应用技术有较高的工程应用价值。介绍了S3C2410处理器的技术特点、触摸屏的工作原理,阐述了基于S3C2410系统的触摸屏接口设计方法和程序配置。     

基于S3C2410的TFT-LCD驱动电路设计

本文以三星电子公司的嵌入式处理器S3C2410和3.5英寸真彩液晶显示器LTS350Q1-PE1为基础,实现了一个基于嵌入式平台的液晶显示系统,设计了TFT-LCD的硬件驱动电路,给出了S3C2410LCD控制器的内部结构和寄存器设置方法。     

嵌入式系统中LCD驱动的实现原理

结合三星公司ARM9系列嵌入式处理器S3C2410．讲解如何进行LCD驱动程序模块化编程及如何将驱动程序静态加载进系统内核。     

ARM芯片S3C2410驱动TFT-LCD的研究

介绍了S3C2410的LCD控制器的数据和控制管脚，并给出了LCD的控制流程和TFT-LCD的控制器设置规则。参照TFT-LCD CJMIOC0101的逻辑要求和时序要求设计了其驱动电路，设置了各主要LCD寄存器。开发了CJM10C0101在嵌入式LINUX下的显示驱动程序，并在CJM10C0101上显示了清晰稳定的画面。实验表明这套装置通用性好，能驱动大部分的TFT-LCD；可移植性强，经过少许修改即可应用在其他嵌入式系统中。它是S3C2410驱动TFT-LCD的一套较佳的解决方案。     

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