结合实际案例分析关键词的选取

通过电学领域三个实际案例介绍了在难于通过权利要求书和说明书记载的内容选择关键词的情况下,根据中间检索结果递进式选取关键词,以及从发明要达到的效果、技术术语的其他表述方式选取关键词的方法,有助于提高检索的效率和准确性.     

多媒体信息检索技术的研究

文章简单介绍了多媒体信息检索技术的概念和特点,详细说明了基于内容的多媒体信息检索技术和方法,提出了一种基于互联网进行多媒体检索的新方法,它把基于关键词的检索与基于内容的检索有机地结合起来,并利用相关反馈提高检索效果,最后对多媒体信息检索实例进行了分析。实验证明,该方法能有效提高检索的准确性和精确度。     

通信领域的检索策略

介绍了通信领域的检索策略,结合通信领域的实际案例,分析了该领域检索过程中检索策略的选择、关键词的选取以及检索工具的选择.通过多种检索策略的巧妙结合,有效地提高了检索效率,更快地获得最接近的现有技术,在提高效率的同时往往可以获得比较好的检索结果.对于专利分析具有有益的引导和借鉴作用,同时也对其他文献的检索提供有效地参考.     

基于图像领域谈专利检索的关键词选取与搭配

基于图像领域详细阐述了在专利信息检索中关键词的选取与组合搭配方法,从单刀直入、向上延伸、向下延伸和横向延伸四个角度详细阐述了逐层深入的关键词的选取策略,并基于对关键词间的距离的讨论,阐述了如何基于关键词间的距离关系确定关键词间的组合搭配,如何结合专利文献的撰写特点确定关键词间的组合搭配.对于科研人员或专利信息检索者而言,文中对查新检索、技术资料检索或专利信息分析检索均具有有益的引导和借鉴作用,同时也可对其他文献类型的信息检索提供有益的参考.     

电视图像领域检索策略与关键词的提取

介绍了一个电视图像领域的实际案例的检索过程,分析了本领域的检索过程中检索策略的选择及关键词的提取方法.结合电视图像领域的实际案例,介绍了如何理解发明、针对权利要求的特点制订有效的检索策略以进行高效的检索.     

利用VC++开发DB2多媒体数据库

介绍了IBM关系对象型数据库DB2 5.0的管理多媒体数据的主要特殊工作原理及功能;基于作者的实际开发经验较详细介绍了图像扩展器管理图像的方法,就开发DB2应用程序的方法进行了探讨;重点介绍了嵌入C方式开发多媒体图像数据库的方法和基于图像内容的检索方法,是初涉DB2 UDB开发领域的读者的学习开端。     

语音领域发明专利检索初探

针对语音领域在检索时经常遇到的问题结合笔者的实际检索经验,主要从专利检索和非专利检索两个方面介绍了检索技巧,希望能对语音领域的检索提供参考和借鉴。     

巧用商品名称——浅谈机织领域检索技巧

本文基于对机织领域专利申请及技术发展特性的分析,针对机织领域专利申请中商品名称出现频率高、含义准确的特点,探讨了商品名称在机织领域关键词检索中的重要作用,提出了关键词检索中优先考虑商品名称的检索思路,并结合实际案例的检索过程,对采用商品名称进行针对性检索的技巧进行了结语。     

移动通信领域关键词扩展在专利检索中的运用

随着移动通信技术的快速发展,移动通信领域的专利申请数量也大幅增加。如何有效确定检索思路、准确提取并扩展关键词,成为检索中尤为重要的问题。本文从关键词扩展的重要性入手,基于实际案例从关键词提取、关键词一般性扩展和关键词精确性扩展三方面进行分析,有助于提高检索的效率和准确性。     

网络多媒体体育教学资源库信息模糊检索研究

网络多媒体体育教学资源库中的信息量庞大，加大了信息模糊检索的难度，导致检索匹配度低、耗时长的问题出现，因此提出网络多媒体体育教学资源库信息模糊检索方法。分析网络多媒体体育教学资源库信息模糊检索关键词与文档之间的相关性，以此构建初始检索模型。为进一步优化检索模型的性能，对检索子查询分区进行扩展处理，结合模糊逻辑检索规则实现初始检索模型的优化，利用优化后的模型实现信息模糊检索。实验结果表明，所提方法初始查询与索引文档的匹配度较高，检索耗时较短，具有较高的实际应用价值。     

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.     

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.