机载低功耗视频处理模块的设计与实现

现代飞机座舱显示技术的发展日新月异,越来越多的视频信息需要在座舱中显示和交互。在某特定的供电显示系统中,既要处理相关视频信息又要严格控制模块的功耗,因此需要研究机载低功耗视频处理技术。结合系统需求,研究了机载低功耗视频处理模块的硬件设计和逻辑软件算法。在机载供电显示系统中实现了视频信号的相应处理,包括视频旋转和视频缩放,同时满足了系统对视频模块的功耗控制要求。     

浅析数字高清视频传输和视频接口转换研究

随着硬件技术的飞速发展,日常生活中接触和使用越来越多的数字高清视频信息,为我们带来了更好的视觉体验。然而,高昂的成本也让其越来越受到交互式网络电视带来的潜在威胁。而便利高效的实现数字高清视频传输和视频接口转换对提高高清视频覆盖度具有显著的促进作用。本文对数字高清视频传输与视频接口的转换设计做了深入探讨,以期为高清音视频技术的发展和推广应用做出有益探索。     

新品发布

集成电路Integrated Circuits高集成度AV(音频/视频)前端高集成度A(音频/视频)前端ADV7850适用于依靠出色的AV处理和HDMI(高清多媒体接口)标准1.4版支持来提供3D显示分辨率的家庭影院设计。其旨在改善高级高清(HD)系统,包括高清电视、影音接收机、视频切换器和投影仪的视频图像、颜色质量和音频清晰度。此外,ADV7850内置业界首款集成式HDMI接收器,以支持使用多种供应商特定信息帧(VSI)的THX     

嵌入式多源高清视频监控系统设计与实现

针对高清视频监控系统的实际应用,基于FPGA和DSP嵌入式技术,设计并实现了一套基于FPGA和DSP嵌入式技术的多源高清视频监控系统。其中以FPGA和DSP芯片为板卡核心,采用模块化设计思想,实现了四路压缩视频流的解压缩和图像处理功能。使用SOPC构建基于NiosⅡ软核处理器的微控制器系统,实现视频的数据格式转换、缩放和叠加功能,将四路视频叠加拼接成一路视频。利用硬件编程实现视频流与辅助信息的同步,将整合后的视频数据通过PCI接口传输给上位机应用程序显示。最终通过试验给出了系统的监控效果,证明了系统的可行性和优越性。     

一种车载视频处理模块的设计与实现

随着视频图像技术的发展,车载视频系统需要处理视频的种类和数量越来越多,不仅需要处理多路标清PAL视频,还需要处理高清HDMI视频等。文章介绍了一种基于DSP+FPGA的车载视频处理模块,实现对多路外视频的实时处理。     

高速公路收费广场高清视频监控系统解决方案

高清视频监控系统是视频监控行业的发展方向,其应用越来越广,高清视频监控系统目前主要有IP视频监控系统和HD-SDI视频监控系统。高清视频监控均为数字视频系统。本文对这两种视频系统进行对比,以HD-SDI视频系统在高速公路收费站广场监控的解决方案来说明高清视频监控系统在高速公路的应用。     

基于DM8148的视频处理系统设计

设计了基于DM8148处理器的高清视频处理系统,介绍了各硬件模块的设计以及系统应用程序的编写。系统的采集模块将采集到的高清视频数据送入高清视频处理子系统。视频处理模块对视频进行去隔行、尺寸调节、添加OSD和H.264编解码算法处理,处理过的视频流经HDMI接口输出。     

视频系统的革命

随着国家2002年的信息化改革．随着高清技术不断发展．高清远程会议系统依然崛起．高清显示设备和高清视频播放设备也在每年20％的增长率迅速占领家电市场和专业视频市场,然而在视频会议系统中却很少见到真正的高清视频系统,原因何在呢？经分析有以下几点：     

威泰公司打造北京怀柔区法院远程法庭综合应用系统

项目背景 2012年．怀柔法院建设了高清数字法庭系统,为整合高清视频音频应用,实现高清庭审、立案、信访、远程二审、远程接待等视频的统一管理、统一调度应用和统一运维。2013年,怀柔法院决定采用VTEL设备升级现有视音频网络．完成高清视频传输主干建设．实现高清音视频采集传输处理与综合显示调度,为方便当事人就近参与诉讼,     

大连科迪高清矩阵应用于黑龙江中国移动通信高清视频会议系统

自2008BIRTV展会结束以后,科迪搭建的高清会议系统吸引了大批客户。近日．黑龙江移动通信采购了科迪高清矩阵,应用于高清视频会议系统。该高清YPbPr视频会议系统由支持高清YPbPr模拟视频的信号源、切换中枢、终端显示设备组建完成。核心型号切换设备采用大连科迪高清YPbPr视频矩阵,转为使用YPbPr高清信号的系统设计,     

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.