FPGA上的硬件Video Port设计

提出一种适合FPGA实现的视频输入输出系统结构.该系统包括视频图像采集、视频图像存储和视频图像显示三个部分.视频采集部分能够接收符合ITU-R BT.656标准的PAL格式YUV视频流数据;视频图像显示部分能够输出标准VGA格式的视频图像.该系统结构在Xilinx FPGA上实现并取得了较好的效果.     

FPGA实现的OLED视频处理系统

本文利用Altera公司的FPGA(Filed programmable gate array)作为主处理芯片,设计并实现了基于OLED(Organic light emitting diode)屏的视频处理系统.该系统主要包括视频图像的采集、处理与显示三个部分,能够接收与ITU656标准兼容的YUV4:2:2格式的视...     

基于FPGA的视频采集显示系统

设计实现一种基于FPGA的视频采集显示系统,包括视频图像的采集、处理与显示3个部分。视频图像部分采用CCD摄像头OV7670作为视频数据的采集,利用在FPGA中构建FIFO并配合SDRAM高速读写实现视频图像数据的高速缓存处理,使用FPGA中构建的Nios II嵌入式内核,实现对SDRAM的控制以及视频数据的TFT液晶实时显示。整个系统获得了较好图像采集、显示效果。     

基于FPGA高速视频图像实时采集与处理系统设计

针对高速视频图像实时采集与处理系统处理数据量大与系统实时性之间的矛盾,设计了一种基于高性能FPGA的高带宽处理系统。采用Cyclone IV GX系列芯片为核心处理器,4片DDR2构造64位总线。完成了高速系统硬件电路设计,系统主要由高速视频图像传感器、FPGA、DDR2、VGA控制器件等组成。实现了高速视频图像数据的实时采集、缓存、处理、显示等一系列过程。实验表明,利用此系统进行高速视频图像的实时采集、处理与显示时,处理速度快,动态画面流畅,实时性好。     

基于PCI的高分辨率医用X光视频图像采集及处理系统

采用影像增强器 CCD采集方式实现了高分辨率X光医学视频图像采集与处理系统.系统包括三大模块:视频图像采集部分、图像数据传输部分和图像后处理部分.硬件电路采集的数字图像通过高速PCI总线与PC机进行视频图像数据传输,再由图像处理软件对图像作后续处理;软件包括PCI设备驱动程序以及图像后处理软件平台,采用Microsoft的Visual C 6.0语言编写.本文详细描述了X射线医学视频图像采集与处理系统工作原理和工作过程,重点阐述在基于Windows平台的PCI设备驱动程序编制过程中碰到的关键问题。在医学图像数字化采集及传输方面作了有效的探索并取得了一定的成果,具有普遍的应用意义.     

基于FPGA和OV7620的图像采集及VGA显示

为完成视频图像处理系统,设计了图像采集显示系统。系统以FPGA为控制核心,通过SCCB总线初始化OV7620数字图像传感器,实现图像的采集和图像数据的存储;用Verilog HDL编写了对THS8133的控制信号和VGA显示的行同步和场同步信号,完成VGA接口协议。试验表明,系统设计合理,硬件电路简洁且实现容易,能够实现数据的实时采集和采集结果的VGA显示,具有较高的实用价值。     

基于Linux系统的USB摄像头视频播放实现

随着USB摄像头的普及以及Linux系统桌面应用的推广,基于Linux系统的视频播放程序设计有着现实应用的意义。采用应用编程接口Video4Linux2所提供的数据结构、应用函数等,实现在Linux环境下USB摄像头图像数据的采集功能,并运用GTK库显示和播放其视频图像。运用Linux标准库函数实现了数字图像的采集,对基于Linux内核的后续图像应用开发具有实用意义。该程序采用Linux系统下新的视频编程接口和标准库函数,以模块化结构实现所需功能,具有良好移植性,基于此平台可方便加入图像处理等其他应用模块。     

基于WIFI的嵌入式视频监控系统设计

介绍了一种基于WiFi无线网络的嵌入式视频监控系统的设计与实现方法.首先分析和介绍了本设计的总体设计,将整个系统分为服务器和客户端,服务器实现视频图像采集、JPEG硬解码、WiFi无线网络传输视频图像,客户端实现视频图像的接收、保存和显示,并针对客户端视频图像的网络接收和显示问题,提出了一种基于循环队列形式保存和显示视频图像的方法.实验结果显示,该监控系统能够实现显示稳定、清晰和流畅的视频图像.     

基于Qt/Embedded视频采集方案的设计与实现

为解决Qt/Embedded视频采集过程中图像的连续性和实现过程的简易性,基于ARM-Linux中V4L2(Video forLinux2)视频采集架构模型提出两种设计方案:一是使用Qt/Embedded提供的QThread类,将基于Linux视频采集应用程序移植到QT开发的GUI界面上;二是采用其中的QPainter类,直接实现USB视频采集显示。并以第二种方案为例将视频采集GUI发布到嵌入式设备上。以上方案的设计方法对非GUI到GUI的移植具有重要的参考意义,同时对视频图像的后端处理具有实用价值。     

基于USB接口的高速高精度实时红外视频采集系统设计

提出了一种高速高精度实时红外视频处理及采集系统设计,采用高速DSP芯片对红外视频图像进行非均匀校正,配以传输速度高达480Mb／s的USB2．0接口芯片实现与主机接口,视频图像的显示及后续处理由计算机完成。实验验证了该系统具有高速、高精度、实时性强等特点,适用于高精度的红外视频采集和辐射特性测量。     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

Critical Stage Rule-Based Real Time Dispatch（RTD）System in Highly-Mixed-Products （HMP） FAB

An improving utilization and efficiency of critical equipments in semiconductor wafer fabrication facilities are concerned. Semiconductor manufacturing FAB is one of the most complicated and cost sensitive environments. A good dispatching tool will make big difference in equipment utilization and FAB output as a whole. The equipment in this paper is In-Line DUV Scanner. There are many factors impacting utilization and output on this equipment group. In HMP environment one of the issues is changing of reticule in this area and idle counts due to load unbalance between equipments. Here we'll introduce a rule-based RTD system which aiming at decreasing the number of recipe change and idle counts among a group of scanner equipment in a high-mixed-products FAB.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.