微机图像输入系统的接口设计

介绍了快速微机图像输入系统的接口设计，简单叙述了组成图像输入接口的视频放大、行场同步分离、模数转换、图像采样窗口控制、帧存储器及其读写等电路；介绍了该系统的软件结构及图像输入、图像显示和图像打印三个软件模块的设计思想。     

基于I2C总线的CMOS图像传感器接口电路设计

详细阐述了一种用于百万像素数码相机的CMOS图像传感器接口电路设计及其VLSI实现;文章按照数码相机的功能要求进行整体设计,由上而下讨论了各个子模块的设计,并给出了电路的FPGA验证;本设计作为数码相机专用芯片的一部分用0.6 μ m工艺实现.     

4×128双色线列红外探测器成像电路设计

介绍了针对4×128双色线列探测器而设计的成像电路系统,其硬件电路主要包括探测器适配电路、视频模拟信号调理电路、模数转换电路、图像预处理电路、数字图像输出接口电路等。探测器驱动时序、一维扫描成像时序、AD采样时序和接口时序由FPGA来实现,采用VHDL语言完成时序设计。     

基于RL78/G13的图像采集接口电路设计

针对普通低速单片机难以驱动摄像头的问题,设计了带FIFO模块的图像采集接口电路,采用模拟SCCB通讯协议,实验结果表明数字图像接口电路数据传输稳定图像清晰.     

高速模数转换器应用技术（1）

介绍了高速模数转换器的采样原理、动态特性及技术指标、基本电路结构、输入接口和驱动器电路的设计及典型应用。     

基于HDL的PAL制数字视频图像采集控制器设计

介绍了PAL制电视信号的组成和数字视频图像采集的过程：用Verilog—HDL设计了PAL制数字视频图像采集的控制电路；该控制器为DSP进行实时数字图像处理准备好RGB数据，其中包括数据采集控制电路、存储器接口、总线切换电路和DSP接口等电路：在ModelSimPLUS6．0SE软件中进行了仿真和调试，结果表明实现了PAL制数字视频图像采集的相关功能。     

KAI-02150的CCD模拟前端采集电路设计

针对Kodak公司生产的CCD图像传感器KAI-02150,设计了双通道模拟前端采集电路。给出了电路的结构组成,根据KAI-02150的驱动和输出参数要求设计了各个模块的具体电路。通过SPI接口对AD9920A的寄存器进行配置,可以满足多种工作模式切换的需要。与传统的CCD模拟前端采集方案相比,文中的设计更加灵活简单、稳定可靠。测试表明,设计的输出驱动时钟满足KAI-02150的输入要求,可以驱动CCD输出模拟信号,并完成相关双采样和A/D转换得到数字视频信号。     

利用FPGA通过ISA总线实现图像采集

文章介绍了利用FPGA通过ISA接口实现对数码相机中的动态图像或静态图像进行采集。     

AD9240在中频直接采样中的应用

文章介绍了AD9240内部结构、工作原理及在中频直接采样中的运用,还讨论了AD9240的接口电路、PCB板图的设计以及在中频直接采样中的测试结果。     

基于锁相环与双AD7865的交流采样技术及其应用

为了保证对电力系统的实时监控、调度,需要对电力参数进行交流采样。介绍了电力系统参数交流采样的设计思想,对频率跟踪电路进行了分析,提出了由锁相环CD4046和AD7865构成的硬件解决方法,并给出了由CD4046构成的频率跟踪电路、信号调理电路以及AD7865与TMS320LF2407的接口设计电路,解决了电力系统中多路电压、多路电流的交流采样问题,保证电网频率变化时采样数据的精度和稳定性。该采样算法可以应用于多种场合,具有一定的实用和推广价值。     

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.     

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