移动便携图像存储系统的设计

为满足Camera Link相机图像存储系统小型化、可移动、易携带的要求,设计了基于Xilinx公司V4系列现场可编程门阵列(FPGA)和TI公司6000系列数字信号处理器(DSP)相结合的硬件电路方案。首先,在FPGA的控制下图像数据缓存到一片SDRAM中,同时读出另外一片SDRAM中缓存的图像,经乒乓操作存储到两块固态硬盘中。其次,DSP与上位机用百兆网连接,在上位机的控制下,DSP从外部存储器接口(EMIF)中获取图像数据后,发送给上位机完成实时显示或者存储图像回放的功能。实验表明:在相机分辨率为640×480、帧频为100f/s且像素为10位时,该系统可以不丢帧地完成图像存储任务。在不需要实时显示的应用场合,系统可以单独完成脱机存储任务,满足Base型Camera Link相机的便携存储要求。     

基于DSP和FPGA的高光谱图像处理系统设计

针对高光谱图像的处理系统需要具有数据吞吐率高、处理速度快及存储量大等特点,设计了一套以DSP和FPGA为核心处理器的嵌入式高光谱图像处理系统．系统采用USB接口10方式,选用TI公司TMS320C6000系列DSP和Altera公司的CycloneⅡ系列FPGA作为核心器件．首先给出了硬件实现总体框图,然后介绍了所采用的芯片,并详细叙述了FPGA周围电路的连接及系统工作原理,最后利用高光谱图像目标识别算法对系统加以验证．     

基于DSP FPGA的Camera Link接口相机的图像处理平台设计

以FPGA和DSP为中心,设计实现了Camera Link接口相机的数字图像数据的VGA和PAL双制显示,解决了数字图像数据由FPGA与DSP之间高速、大数据量的实时传输.DSP对数据进行实时处理后,经千兆网络向控制计算机终端传输图像数据,解决了相机数据传输距离的限制,拓展了高速网络相机的应用范围.     

嵌入式计算机智能图像信息处理系统设计与实现

针对目前嵌入式智能图像处理系统中的图像数据的传输问题与多DSP、多FPGA间的并行问题,提出并设计了以DSP+FPGA为系统核心,通过TMS320C6455 DSP外设接口进行扩展的嵌入式智能图像处理系统,能够实现图像的实时采集、解析及处理功能;同时开发了基于TMS320C6455 DSP的千兆以太网数据传送接口和高速串行接口,实现了图像处理的网络化和并行化。最后对以太网的数据传输进行了测试,测试结果表明,开发的以太网数据传送接口达到了千兆以太网的要求。     

基于自适应多模板匹配的目标跟踪

为了解决在模板匹配中精度和速度之间的矛盾,本文结合了DSP便于实现算法和FPGA高速并行运算的优点,提出了一种基于DSP和FPGA协同作用的快速目标跟踪系统,主要在DSP上完成跟踪算法流程控制,在FPGA上实现耗时模块MAD的计算工作,建立两方通信,使该跟踪系统正常工作。将传统的模板匹配算法扩展成为多级模板匹配,并在跟踪算法中加入了抗旋转模板。最后,在Blackfin561系列Visual DSP 和EP3C25系列FPGA组成的系统平台上实现了该算法,并进行了相关的性能测试。实验表明,该系统可以准确、实时地跟踪运动目标,并能够有效地抗目标旋转和尺度变化。     

基于FPGA和MV-D1024E相机的图像采集系统

分析了MV-D1024E系列高帧频CMOS相机的工作时序和参数,阐述了CAMERA-LINK接口协议,并对高速数据流的存储与处理机制进行分析,利用FPGA实现了相机的数据接口和控制,并设计灵活的USB接口,利用PC机作为参数输入和显示界面,完成一个从图像采集到存储、显示的高帧频图像采集系统的设计.该系统可靠性好、集成度高、功耗低,且满足不依赖于PC机的图像采集系统的应用要求.     

基于LM9627的JPEG2000压缩与传输系统

本系统采用美国国家半导体公司的高速彩色图像传感器LM9627，以多片浮点DSP TMS320C6713作为图像处理硬件平台，辅以40／80万门FPGA作为图像采集控制器，实现了高质量、高压缩比率、低码率的JPEG2000编码，通过蓝牙无线传输协议将数据流传到上位机显示和保存。     

基于FPGA和MV—D1024E相机的图像采集系统

分析了MV—D1024E系列高帧频CMOS相机的工作时序和参数,阐述了CAMERA—LINK接口协议,并对高速数据流的存储与处理机制进行分析,利用FPGA实现了相机的数据接口和控制,并设计灵活的USB接口,利用PC机作为参数输入和显示界面,完成一个从图像采集到存储、显示的高帧频图像采集系统的设计。该系统可靠性好、集成度高、功耗低,且满足不依赖于PC机的图像采集系统的应用要求。     

基于DSP和FPGA的红外信息数据处理系统

针对红外制导控制信息数据处理系统的功能分析,提出了采用DSP+FPGA的设计方案,即一种基于TMS320C6414与XC2V2000-FG676的信息数据处理系统设计方案,并从工作原理、硬件以及软件3个方面介绍了该系统的设计和实现方法。由DSP完成图像采集单元的信号采集及处理,由FPGA逻辑设计完成主机控制电路功能部分。本设计具有较高的通用性和可靠性,在红外成像导引系统中具有较高的实用价值和应用前景。     

基于PCI Express总线的红外图像实时采集与显示系统及其界面设计

介绍了一种基于碲镉汞红外短波相机的图像实时采集与显示系统。以基于 碲镉汞短波红外探测器以及FPGA+DSP硬件结构,且具有手动调焦、调节积分时间和增减衰减 片等多种功能的红外短波凝视相机作为采集系统的基础,以Camera Link接口连接线作为传输通道,采 用兼容PCI Express x4总线的采集卡实现了红外图像的实时快速采集和显示。实验中,设计了图 像采集与显示界面,以实现对相机的实时控制和对采集图像的调整;设计了一种图像回放软件,以完成 存储图像检验和后期图像处理等工作。实验结果证明,该系统的性能稳定可靠,实时采集、传输和存 储功能完备准确,因此具有很高的工程实用价值。     

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.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

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.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.