基于SoC的机载显示器视频图形融合处理系统

为了满足机载显示器对综合视频图形处理技术的需求,提出了一种基于SoC嵌入式处理平台的机载视频图形融合显示与视频记录系统实现方法。该方法以SoC为核心搭建硬件平台,使用SoC内部集成ARM处理器和视频图形协处理单元执行图形生成算法与外视频采集,配合SoC片上高速存储和显示接口,采用双缓存与多线程并发机制实现视频图形融合显示和外视频实时记录。本方法支持多种格式分辨率的视频源采集和大分辨率图形同步生成。实验结果表明,采用该系统技术后机载显示器采集1024×768分辨率外视频同时生成1920×1080分辨率图形时,融合处理后帧率可达45 fps,能够满足机载显示器实时显示需求。     

基于Zynq的图形生成电路设计与实现

为了适应机载液晶显示器向低功耗、高集成度发展的趋势,提出了一种基于Zynq可扩展处理平台的图形生成电路实现方法。该方法以Zynq为核心搭建硬件平台,使用Zynq集成的ARM处理器执行图形生成算法运算,配合可编程逻辑资源,按照一种三缓冲机制对DDR3 SDRAM帧存数据进行缓冲处理,实现图形的实时生成。采用本设计可以生成多种分辨率的机载图形画面。实验结果表明,当生成分辨率为1 024×768的EFIS电子飞行显示系统画面时,帧率可达74fps,能够满足机载液晶显示器高性能实时显示需求。     

小型化低功耗机载显示器图形系统设计与实现

为了满足机载显示器图形生成系统的小尺寸、低功耗需求,提出了一种基于龙芯2K1000的全国产图形生成与处理方案。该方案以2K1000为核心构建硬件平台,使用2K1000内部集成的中央处理器、图形处理器、显示控制器,以及外部的内存实现图形的计算生成和双缓存显示,配合国产可编程逻辑器件实现图形与外视频的叠加显示及机载通信总线扩展。软件上采用航空专用的国产天脉操作系统,基于天脉操作系统设计了关键的图形显示驱动、帧存驱动、显示控制器驱动。实验结果表明,在输出1 024 pixel×768 pixel分辨率显示时,典型机载图形画面帧率达到35 frame/s,整体功耗约10 W。该方案扩展性强、功耗低,满足实时显示需求,在机载显示器领域有着广泛的应用空间。     

基于i.MX6Q的嵌入式显示系统设计与实现

本文以FreescaleCortex-A9架构的i.MX6Q芯片为核心,构建了一套内嵌GPU的实时字符及视频显示系统。该嵌入式平台采用Linux操作系统,基于四核ARM进行多线程程序设计及任务调度;采用开源的SKIA作为2D图形绘制接口,实现多种绘图效果及字符处理;使用i.MX6Q内嵌GPU实现图像旋转、缩放、平移功能;使用OpenGL ES 2.0对图像进行网格划分并分别进行纹理贴图而实现畸变校正;通过PCIE接收绘图指令,将绘制的2D图形和外视频进行叠加,并通过识别两种显示模式将叠加或不叠加的视频进行两路输出显示。设计结果表明,该系统显示性能良好,能够满足实时字符及视频显示需求,在很多显示成像工程领域中尤其是小型化、低功耗的应用需求中具有较好的应用价值,如平视显示器、头戴显示器、视景增强系统、增强现实系统等。     

彩色液晶显示器在压铸机实时压射控制器中的应用

介绍了一种型号为TFT6448-5.7的彩色液晶显示器在压铸机实时压射控制器中的应用.文章结合该型号液晶在压铸机实时压射控制器设计中的应用,对基于DSP的图形液晶显示的研究做了一定的探讨,分析了基于DSP的图形液晶显示器的硬件电路以及程序设计.利用CCS开发环境,完成了显示程序的编写和调试.此外,笔者还提供了该项目中核心处理芯片TMS320C2812型号DSP和彩色液晶TFT6448-5.7的连接电路,方便对照和理解程序.     

一种基于高速双DSP的柔性机载实时图像跟踪系统

以两片高性能TMS320C6414作为核心处理器,辅助以FPGA实现整个系统逻辑时序 的控制,组成基于双DSP的柔性机载实时图像处理系统。该系统可以满足实时图像跟踪高速信号处理的实际需求。本文对系统的硬件资源选择,工作流程进行了详细讨论,并结合相关算法对系统实时性进行仿真测试,结果表明本系统是可行和高效的。     

一种基于高速双DSP的柔性机载实时图像跟踪系统研究

以两片高性能TMS320C6414作为核心处理器,辅助以FPGA实现整个系统逻辑时序的控制,组成基于双DSP的柔性机载实时图像处理系统。该系统可以满足实时图像跟踪高速信号处理的实际需求。本文对系统的硬件资源选择,工作流程进行了详细讨论,并结合相关算法对系统实时性进行仿真测试,结果表明本系统是可行和高效的。     

基于渐变纹理贴图的机载图形显示抗锯齿方法研究

为了提高机载综合显示器图形画面的生成速度和画面质量,文章对基于渐变纹理贴图的机载图形显示抗锯齿方法进行了研究。首先,介绍了几种提高画面显示质量的图形反走样方法;其次,提出了基于纹理贴图的抗锯齿方法,可在保证画面生成速度的前提下,提高机载图形画面的显示质量;最后,对机载图形显示技术的发展做了展望。对比实验结果表明,文章提出的基于纹理贴图抗锯齿的机载图形软件开发方法,不仅具备开发难度小、速度快的特点,而且具有更好的抗锯齿效果。     

基于GPU的图像快速显示技术

新一代的图形显示硬件集成了以图形处理器(GPU)为核心的可编程顶点着色器和可编程像素着色器,为实现实时体绘制技术提供了硬件加速支持,具有一定的并行性和可编程性,在诸如数字图像处理等通用计算领域有着巨大的应用潜力。分析和总结了利用GPU技术实现大数据量的数字图像快速显示的一些基本途径。详细分析了技术难点并提出了相应的解决方法,该设计方法已经在工程实践中应用并取得了较好的效果。     

TMS320DSP处理器在塔康导航设备信号处理中的应用

实时数字信号处理技术的核心是数字信号处理器。本文探讨了TMS320DSP 数字信号处理器在处理机载塔康实时信号方面的应用及实时测量方位、距离的原理、方法和途径。TMS320DSP具有先进的内部数据结构。用强大的数据处理能力去处理机载塔康复杂的信号格式，是一个很好的应用。     

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.     

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.     

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