基于FPGA的扫描跟踪图像实时显示

以ALTERA公司StratixⅡ系列EP2S60F672I4N FPGA为处理核心,一路将所接收的图像数据经过Linkport模块进行时序转换后送入DSP,DSP在对图像数据处理后,计算出目标位置;另一路对所接收的图像数据在两块SRAM缓存下,以两块SDRAM组成的乒乓结构为存储单元,对不同模式下接收的16 bit图像数据实现了90°旋转,经过数据压缩,在接收到DSP所发送的目标位置后,在目标位置上进行字符叠加,并送入所配置的ADV7179显示时序后进行显示输出。最后对各个模块之间数据处理与相应的时序关系和显示中可能出现的问题进行了简要的分析。     

基于DM9000A的DSP以太网接口设计与实现

为了实现DSP与外围设备进行以太网数据通信,采用了一种基于网络控制芯片DM9000A的DSP以太网接口实现方式。它以TI公司的DSP处理器TMS320F28335和DM9000A网络芯片为硬件平台,通过DSP总线控制DM9000A内部寄存器,完成DM9000A的初始化以及底层以太网数据的发送接收,并对TCP／IP协议进行裁剪,包括IP,ARP,ICMP,UDP和TCP等协议,实现了适用于DSP设备的以太网数据通信功能。     

基FPGA和DSP架构的红外图像实时处理系统设计

针对图像处理过程中数据传输量大和算法运算量大的要求,提出了一种基于FPGA和DSP架构的红外图像实时处理系统。该系统以DSP为图像处理核心,利用FPGA实施数据采集和传输的逻辑控制。详细讨论了在DSP/BIOS多任务机制下实现数据采集、数据处理和数据传输的并行化。实验结果表明,该方案设计合理、可行,具有较高的工程实用价值。     

基于虹膜识别技术的便携式身份认证系统

本文提出了采用DSP技术,无线传输技术和Gabor变换的虹膜识别系统,用于便携式的身份认证系统。系统包括3部分：虹膜采集,图像处理与数据传输,数据接收与判别。第1部分采用新型CMOS成像芯片成像,光学低通滤波器滤波和自对准,红外照明防耀眼等无侵犯性设计;第2部分采用LOG滤波器进行边级检测和分离虹膜,采用二维Gabor滤波器变换虹膜图像和编码、DSP控制无线发送编码信息;第3部分采用微处理器控制无线接收编码信息,通过计算海明距离进行编码比较判别。系统克服了一般虹膜识别系统体积笨重、不便于随身携带使用的缺点。     

多通道信号采样和数据传输的一种实现方法

现今数字信号处理飞速发展,多通道信号采样和数据传输技术成为数字信号处理的重要环节。串行数据传输是一种连接信号线少、传输速率高、实现简单的数据传输技术;差分技术可以消除信号线上的干扰,保证了数据传输的可靠性;TigerSHARC DSP的链路口也为多通道数据传输提供了途径。基于以上几种技术介绍一种比较简单而高速的方法来解决多通道信号采样和数据传输。     

关于TMS320F2812_GHH的GPIO口的基本应用

本文主要介绍用TMS320F2812_GHH(以下简称为DSP)的GPIO口作为ARINC429芯片的16位数据总线来实现数据的接收和发送,并利用DSP的GPIO口作为ARINC429芯片的控制线。这种控制方式避免了ARINC429总线与DSP和DSP与FPGA同时通信时的数据冲突,简单、实用、操作方便。     

单片机的串行通信接口技术探讨

MCS-51单片机内部有一个全双工的串行通信口，即串行接收和发送缓冲器（SBUF），这两个在物理上是独立的接收发送器，既可以接收数据也可以发送数据。但接收缓冲器只能读出不能写入，而发送缓冲器则只能写入不能读出。本文以MCS-51单片机为核心，利用通用可编程的异步接收／发送器UART这个通信口既可以用于网络通信，亦可实现串行异步通信，还可以构成同步移位寄存器使用。如果在串行口的输入输出引脚上加上电平转换器，就可容易地构成标准的RS 232接口，与PC机、MCS-51单片机、网络计算机连接进行数据通信。可以方便监测系统，增强设备应用的灵活性。     

基于FPGA和ADV212的彩色图像实时压缩系统的设计

在JPEG2000专用编解码芯片ADV212的基础上,设计了以FPGA与ADV212为核心的彩色图像数据实时压缩系统。系统以FPGA为主控单元实现了对图像数据的接收、压缩、发送,对ADV212寄存器进行了配置、数据输入,并将压缩数据实时上传到上位机。经过实际测试,该系统满足对彩色图像压缩实时性的要求,且系统稳定,失真度小,具有较高的实用价值。     

EDMA在实时图像处理系统中的应用

增强型直接内存存取(EDMA)是数字信号处理器(DSP)中用于快速数据交换的重要技术,具有独立于CPU的后台批量数据传输的能力,能够满足实时图像处理中高速数据传输的要求.以TI公司的TMS320DM642型DSP为例,介绍EDMA控制器的特点.结合实例给出EDMA在图像数据实时传输中的具体控制和实现方法.实验结果表明,通过灵活控制EDMA不仅能够提高图像数据的传输效率,而且能够充分发挥DSP的高速性能.     

ADSP TS201链路口通信的FPGA实现

AD公司的TS201 DSP系列可通过其特有的链路口实现高速通信,为使不具备此接口的设备也能与TS201进行链路通讯,采用FPGA实现数据在链路口与其他并行接口之间的传输,即128位并行模式和4位通信模式之间的转换.设计选用Xilinx公司的Virtex4系列的FPGA,它具有低功耗差分(LVDS)模式,双倍数据速率(DDR)寄存器以及嵌入式先进先出(FIFO)存储器等功能,更适合于此设计.在ISE和Modelsim等辅助工具的帮助下,使用VHDL语言编程,分析和优化整个设计,最终完成设计.可实现接收链路时钟频率为500 MHz,发送链路时钟频率为400 MHz.     

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）.