Java Card技术在智能卡中的应用

Java Card技术使Java编写的应用软件可以运行在有限资源的智能卡中,重点介绍Java Card技术带给智能卡的技术优势,简述Java卡的系统结构和Java卡应用程序applet的开发过程,给出Java Card技术在移动通信中的一个具体应用,即一种新型的SIM卡-Java STK卡。     

基于智能卡的电子钱包及电子存折的设计与实现

针对电子钱包及电子存折的实际应用,基于智能卡,利用Java Card技术对卡片文件结构、交易流程、交易命令、写卡片E2PROM位置及次数等多个优化点实施优化方案,提升电子钱包及电子存折卡片的交易速度。通过行业应用开通文件的添加及复合消费的设计,实现了金融与多行业应用结合的智能卡电子钱包及电子存折应用。在Java Card应用程序体系结构卡片端完成电子钱包及电子存折应用程序的设计、开发及测试。测试结果证明,该电子钱包及电子存折在投入市场前的性能、功能等检测项均符合国家银行卡检测中心及住建部检测要求。     

斯伦贝谢为移动运营商排忧解难

伴随着手机正在从传统意义的“电话”过渡到随时随地传信息的数据终端，手机用户对业务的种类和要求越来越高，即便是实力雄厚的移动运营商也会面临一些新的问题。如：STK 增值业务开发周期过长，服务推向市场的速度较慢，STK 增值业务不够丰富、移动运营商不能开发新业务，ICP不能参与到程序的开发中，无法把他们有新意的想法移植到STK模式等问题。基于以上问题，斯伦贝谢神码选用Java Card 2.1平台的互操作性作为解决方案。基于不同SIM卡商生产的Java卡，对卡上Java应用小程序的下载、安装、运行等过程的互操作使得运营商的难题迎…     

Java智能卡微处理器软件仿真指令的研究与实现

JCP(Java Card Processor)是一种直接支持Java卡虚拟机运行的16位RISC微处理器.但Java卡虚拟机的支持面向对象的字节码指令功能较复杂,用硬件直接实现需要消耗大量的资源,不适合智能卡等硬件资源有限的系统.JCP提供一种硬件陷阱机制,在执行此类指令时,切换到相应的陷阱处理程序中,用软件仿真它们的功能.文章讨论了Java卡虚拟机二进制文件特点,软件仿真指令的面向对象的功能及其具体实现.通过仿真基于JCP的Java卡操作系统和应用程序,验证了软件仿真指令实现的正确性.     

Java以百米冲刺速度跑向嵌入式系统世界

Java在嵌入式系统中的黄金时代 是否已经到来?答案是“还没有, 但越来越接近了。”当前的一些发展表明,基于Java的许多种嵌入式和便携式通信系统已经上路。首先,SunMicrosystems公司已经宣布,它将定义和支持Java API的三个子集:除了以前已宣布的Java Card之外,还有Person-alJava API和EmbeddedJava API。其次,许多微处理器厂家和实时操作系统厂家正在获得JavaOS授权,以便开发真正嵌入的、基于Java的器件。某些厂家已产生了基于JavaOS的产品。第三,Java Beans构件结构得到了越来越多的支持,对Microsoft公司的ActiveX形成挑战。     

基于Java的Web开发技术浅析

随着互联网技术的快速发展和Web技术的广泛应用,使得基于Web技术的应用系统的开发成为了软件开发中的热点.由于Java的可移植性、易用性等特性,再加上完善的Web应用体系结构,基于Java的Web开发技术得到了广泛应用.本文详细阐述了基于Java语言在Web开发,同时简要论述了Web应用的基本原理和基于Java的Web开发技术.     

迎接百万像素CCD时代——CF Card向大存储量迈进

众所周知,小型存储卡是当前急速发展的数字化照像机必备的存储介质,尤其是微密快闪存储器卡CF(Compact Flash)Card极为引人瞩目。日立公司为迎接百万像素CCD时代,现正致力于CF Card大存储容量化研究与开发。现已将30MB的CF Card产品投放市场,而且,不久预定推出45MB的CF Card新产品。这种大容量化的CF Card,其应用领域远不只是作为存储数字化照片的存储介质,而是可以开拓广阔的新应用天地,如像作为便携式PC机的存储设备以及数字化录音等新应用。     

Java技术在移动增值服务上的应用

本文介绍了Java在移动增值服务上的应用,主要介绍了无线Java技术的体系结构和Java应用在移动通信增值服务上的技术优势。     

java的现状及前景

一.Java的应用情况从目前各类媒体的报道上看,Java的应用主要集中在以下几个方面: 1.企业求解方案软件。如EJB(EnterPrise JavaBeans)为企业提供全面的信息管理、基于知识的企业运作解决方案。基于服务器的信息服务功能,如销售系统、售后服务、员工培训、企业决策等逐渐成为发展的重点。 2.Java OS。如基于Java技术的NC和JavaStafion、高性能的Java平台以及JavaPC等。 3.Java开发工具软件的可视化、可听化、可操作化。如Java Audio/Video、Java媒体框架(JMF:JavaMedia Frame),以及JDK、svmantec Visual Cafe、JavaDynamicM anagement Kit等。此外还有Sun公司推     

计算机软件Java编程特点及其技术运用探讨

随着我国科学技术的快速发展,计算机软件技术也在不断的更新换代,在这样的时代背景下,Java计算机软件编程语言技术的应用范围逐渐变得广泛。与其他的编程语言相比,Java计算机软件编程语言技术具有简单易操作、安全系数高、灵活性强的特点。基于此,Java计算机软件编程语言技术能够有效提高计算机软件研发的质量及效率,极大促进我国计算机软件研发技术的发展。因此,文中探讨了计算机软件Java计算机软件编程语言技术的特点及该技术的实际应用,研究了计算机软件Java计算机软件编程语言技术的未来发展前景,以期为相关人员提供参考。     

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.