用TMS320F206的ASP实现1-Wire总线温度传感器接口

1-Wire总线是低速总线，存在长时间的延时。为了提高DSP使用效率，利用TMS320F206的片内ASP(异步串行口)，采用UART(通用异步收发)方式，模拟1-Wire总线时序，实现与1-Wire总线数字温度传感器DS18B20的通信。提供了方便、高效的低速总线与高速处理器的接口。     

TMS320C5402与PC机异步通信的设计与实现

为实现“基于FPGA／DSP的数字芯片测试仪”与PC机之间的通信,本文采用DSP芯片TMS320C5402与PC机之间进行串行通信,介绍了TMS320C5402McBSP（多通道缓冲串口）的特点及MAX3111的一些特点,并给出了通信方案的具体设计思想及相应的硬件配置和软件设计。经测试表明,此方案完全可行,能实现DSP与PC机之间的异步通信,传输准确性高。     

一种新的DSP与PC机串行通信设计方案

目前大多数数字信号处理器(DSP)芯片上只提供2～3个同步串行接口,并不支持通用异步接口(UART)标准,其与微机及其它设备串行通信时,必须在DSP上扩展异步串行接口。针对DSP与PC机实时交换数据的通信接口标准不兼容的问题,以TMS320VC5402为例提出了一种串行通信设计方案,实现了DSP多通道缓冲串行口(McBSP)与PC机RS232接口的全双工通信。     

TMS320LF2407数字信号处理芯片与PC 机间的串行通信

讨论了TMS520LF2407芯片串行通信接口与BS-252串行口进行DSP与PC之间的异步通讯技术，给出了实现异步通讯的硬件接口电路以及相应的软件程序。其中上位机采用VB编程语言进行设计，利用串行通信控件MSComm，通过MAX252芯片进行电平转换后，实现了DSP与PC间快速、准确、可靠的数据传输。     

McBSP在DSP与PC机通信中的研究与设计

本文介绍了TMS320VC5402DSP的多通道缓冲串行口McBSP的特点，针对用户经常面临的DSP系统与PC机实时交换数据时通信接口标准不兼容的问题，提出了一种新的串行通信设计方案，实现了DSP同步串口McBSP与PC机异步串口RS—232的全双工通信。     

DSP串行通信

以TI公司TMS320C32为例，探讨了如何开发DSP自动控制装置通信程序,包括DSP和PC之间的异步串行通信、DSP与模拟接口芯片（AIC）的同步串口通信以及DSP之间的同步串行通信，并列出了相关部分的程序代码及硬件连接图。     

TL16C750在异步串行通信中的应用

文中通过扩展异步通信芯片 TL16C750 实现 DSP 和 PC 机之间的异步串行通信,从而增强系统的通信接口控制能力。介绍了 TL16C750 的性能及与通信有关的寄存器,给出了 TL16C750 在 TMS320VC33 与 PC 机串行通信系统中的硬件应用电路及 TMS320VC33 初始化 TL16C750 的软件编程。     

DSP与PC机的串行通讯

以TMS320F2407为例，阐述了串行接口扩展技术，即在Win32环境下通过调用通信API函数以异步方式来实现PC机和DSP之间的通信。     

基于TMS320F206的多协议数据传输

介绍一种基于DSP芯片的多协议数据传输系统设计。以TI公司的DSP芯片TMS320F206作为核心控制,CPLD器件EPM7128作为外围逻辑控制,数据接口专用芯片MXL1344A和MXL1543作为多协议接口电路,对异步数据、同步数据及非等时数据均能实现与标准数据格式间的相互转换。     

一种基于TMS320F206的雷达数据处理系统

雷达数据处理系统是现代雷达的重要组成部分，实际应用中，一般采用微型计算机实现雷达数据处理功能，随着DSP芯片的快速发展，应用了DSP芯片的雷达数据处理系统极大提高雷达数据的处理能力，文中给出了一种基于DSP芯片TMS320F206的雷达数据处理，阐述了此数据处理系统的主要结构和设计思想，同时介绍了TMS320F206芯片的中断特性和片内Flash RAM的使用方法。     

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