基于FPGA的ASI信号接收与发送的实现

提出了一种用FPGA芯片代替Cypress公司的CY78933和CY78923芯片来实现ASI信号接收与发送的方案，详细阐述了DVB—ASI接口的硬件组成与FPGA实现，该接口符合DVB—ASI的接口规范，可实现270Mbps的信号传输，已经得到实际运用。     

浅谈数字电视平台建设中接口选择和ATM在DVB中的应用

本探讨ATM在DVB中应用以及DVB传输中ASI接口与STM—1／DS3接口的选择。     

基于PCI接口的DVB发送卡设计

介绍了一种置于计算机或dvb网关内部的PCI接口插卡，该发送卡通过标准的DVB输出接口——异步串行口(ASI)，可以将计算机内部的MPEG2传输流数据以一定的速率发送给各种数字视频设备，实现大规模并行数据广播的发送。介绍了通过发送卡实现这种海量传输的硬件实现方案及设计要点分析。     

DEC1100型有线数字电视码流转换器

DEC1100是一款工程型数字有线电视码流转换器。完全符合DVB—C标准，将QAM调制信号解调输出DVB系统TS流、带有ASI接口；有MPEG-2解压处理，可输出A／V信号，供本地节目监视使用。     

ASI-SPI接口转换实现方法

本文给出了ASI接口和SPI接口互相转换的实现方案。其中，ASI转SPI接口时，往往需要精确恢复出TS流的字节时钟，这是ASI转SPI接口的难点之一。本方案采用DDS芯片，分别采用乘除法计算出DDS的控制字，并用FPGA实现其逻辑。     

德赛电子和索贝数码分别选中赛普拉斯的HOTLink视频设备

德赛电子技术有限公司在其用于电视广播的传输流（TS）复用器中采用了赛普拉斯的HOTLink视频SERDES产品。HOTLink SERDES提供可靠的信号接收和传输，使得播放十分流畅。与此同时索贝数码科技股份有限公司的SD非线性编辑系统采用了赛普拉斯HOTLink Ⅱ SERDES和SD／DVB—ASI视频均衡器。SERDES提供了连接同轴电缆和光纤设备的接口以实现可靠的视频传输，而SD／DVB—ASI视频均衡器则确保了无干扰的视频信号。     

基于CI接口的机卡分离条件接收系统设计与实现

通过比较实现CA系统的3个技术方案，引入DVB—CI公共接口概念并给出了CA系统中CI接口设计的框图，对公共接口协议作了简述，在此基础上完成CI接口的硬件设计和软件开发实现，简要介绍了对公共接口的扩展应用。     

数码视讯隆重推出CHINIC8050 DVB网关

最近北京数码视讯公司新推出一款DVB网关，型号为CHINIC8050．这种网关主要实现了DVB-ASI至IP的双向转换，可以将编码器、复用器、卫星接收机输出的ASI码流打成IP数据包发出，同时，可以接收指定的IP端口的数据通过ASI输出接口回复TS流，单机结构，运行稳定。     

使用CY7B933-400实现DVB-ASI接收系统的解码

本文选用美国CYPRESS公司的端到端通信接收处理芯片来实现DVB－ASI接收系统解码过程,并且提出了DVB－ASI接口的一些关键原则。     

支持多模块的DVB通用接口的实现

具有支持多模块的DVB通用接口是机顶盒的必然趋势。介绍DVB通用接口标准，阐述接口中各层的功能，给出一个实现支持多模块的DVB—CI接口的实例及最后的测试结果。     

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