基于RTL8019AS的单片机TCP/IP网络通信

介绍了以太网控制器芯片RTL8019AS,并将TCP/IP协议嵌入通用单片机中,通过RTL8019AS实现了智能设备和仪表在局域网/因特网上的数据传输.文中给出系统硬件原理框图和有关实现TCP/IP协议的程序代码,对系统的软硬件架构做了阐述,并给出了验证结果.     

基于DSP的TCP/IP协议的应用研究

文章提出了一种基于DSP的TCP／IP协议的应用方法。对于TCP／IP协议进行了简单的介绍．给出了DSP与以太网控制器RTL8019AS的接口电路以及相关的软件设计流程圈，并对RTL8019AS进行了详细的介绍．完成了该系统的开发。实际应用表明：该系统可以将数据按网络协议处理，实现数据的以太网传输。     

基于ARM的以太网接口电路设计

阐述了基于ARM处理器LPC2294的嵌入式系统的以太网接口电路的设计,针对当前嵌入式研究领域的技术热点,实现了以太网功能在嵌入式系统上的开发与应用.详细介绍了ARM处理器的硬件设计,LPC2294与以太网控制器RTL8019AS的接口电路设计和以太网传输层的UDP协议、TCP/IP协议的软件设计流程,以及系统的通信调试过程.ARM处理器与RTL8019AS通过外部数据总线连接,具有非常好的实时性和可靠性,很好地实现了嵌入式系统的以太网功能.     

基于TMS320VC5509的以太网通信系统的设计

介绍了以TMS320VC5509为微处理器,以RTL8019AS为网络控制器的以太网数据通信系统的设计方法。给出了该系统的硬件接口设计、RTL8019AS的驱动程序流程以及嵌入式TCP,IP的实现方法。     

基于DSP+CPLD的网络数据传输系统设计

介绍了基于DSP+CPLD和以太网卡的网络数据传输系统设计方案。设计了以DSP芯片TMS320VC5509A、CPLD芯片EPM3128A和网络接口控制器RTL8019AS为核心的网络接口电路;在DSP的结构中精简并实现了TCP/IP协议;通过编写C语言程序设计了系统与PC机进行网络数据传输的主程序,最后实现了数据的传输。实验证明:以DSP+CPLD和RTL8019AS网络芯片构成的网络数据传输系统,能与PC机进行数据传输,且工作稳定可靠。     

基于单片机在以太网络数据的传送

首先在硬件方面介绍了以太网控制器RTL8019AS工作原理，然后给出了硬件设计图；在软件设计中，研究了TCP／IP协议，并完成了在单片机的控制下，对RTL8019AS的复位、初始化、发送数据和接收数据的编程。     

用单片机实现以太网卡通信的设计

介绍了基于51单片机的以太网卡硬件接口电路的设计和网卡驱动程序的开发。该设计是实现RS-232串口数据格式和以太网协议格式的数据转换。核心处理器采用AT89C51单片机,以太网卡控制芯片采用RTL8019AS芯片将TCP/IP协议栈嵌入到单片机中。讨论了TCP/IP协议族的分层实现,并根据应用的需要将单片机中的TCP/IP协议进行简化,实现网络通信。     

用于远红探测的嵌入式WEB服务器设计

本文主要介绍了单片机使用TCP／IP协议制成WEBJIK务器,将传感器探测到的数据在通信网络中传输的技术。将TCP／IP协议嵌入单片机中,借助网卡芯片RTL8019AS实现单片机在局域网内的数据传输。     

基于以太网的远程升级嵌入式系统的设计

介绍基于以太网的远程升级嵌入式系统的设计。硬件主要采用系统级芯片C8051F020单片机及RTL8019AS网络芯片设计,软件采用Keil Cx51单片机高级语言编程,网络协议选择通用的TCP/IP协议。详述了此嵌入式系统硬件和软件的设计思路,并介绍了嵌入式系统实现远程软件升级的工作原理。     

嵌入式TCP/IP协议栈的设计与实现

详细描述了TCP/IP协议栈的裁剪、设计和实现方案.该协议栈以PHILIPS LPC2294微处理器、以太网控制器RTL8019AS为硬件平台,采用模块化层次化的结构设计,实现了ARP、IP、ICMP、UDP等协议模块.经过精简后的协议栈代码量小,结构合理,易于移植和扩充.     

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.     

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     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first