基于CY7C68013的CMOS成像系统设计与实现

设计了CMOS图像传输系统的基本框架结构,实现了系统硬件及软件设计。系统采用Cypress公司FX2 CY7C68013芯片,在不使用CPLD等控制芯片的条件下,利用Slave FIFO方式实现了图像数据的高速读取,并将将其直接存入内部缓冲区,节省了一般系统所必需的FIFO。同时该系统还通过CY7C68013芯片上自带的I2C总线接口,实现了CMOS相关寄存器的在线配置与实时图像配置。     

基于AD7663和CY7C4285V的数据采集系统设计

针对数据采集的速度和采样精度两项重要指标要求，介绍了一种采用高精度模数转换嚣AD7663和高速同步FIFO缓冲CY7C4285V组成的数据采集系统的设计参考方法，分析了ADC和FIFO的工作原理，并在此基础上给出了高速同步数据采集的硬件电路图，同时给出了采FIFO作为采集器与处理器之间进行连接以实现数据采集和传送的同步与协调的设计参考方法。     

基于FPGA与USB 2.0接口的红外图像采集系统设计

以FPGA为核心处理器,完成了中波热像仪输出红外图像的实时采集与存储系统设计。系统主要由USB固件程序、FPGA控制程序和上位机软件组成,通过对工作在Slave FIFO 模式下的USB2.0接口芯片CY7C68013A内部FIFO进行控制,实现了USB接口的高速数据传输。应用结果表明,该系统具有数据传输速度快、采集数据准确等特点。     

基于Verilog的FPGA与USB2．0高速接口设计

USB 2.0接口芯片FX2 CY7C68013工作在Slave FIFO模式下,讨论了一种以FPGA为控制核心,对其内部的FIFO进行控制,以实现数据的高速传输.该系统模块主要由USB固件程序和FPGA控制软件组成,可应用到需要通过USB 2.0接口进行高速数据传输或采集系统中.实验结果表明:系统具有数据传输准确、速度快等特点.     

流式细胞仪数据采集系统的USB接口设计

针对流式细胞仪中大量数据高速采集、处理和传输的需求,设计了基于USB的高速数据采集系统,并以FPGA为逻辑控制的核心。介绍了整体设计思路、硬件总体架构和软件流程。采用CY7C68013A的Slave FIFO数据传输模式满足高速传输的需求,以应用程序下载固件的方式满足仪器更新换代的需求。测试结果表明系统传输数据准确,传输速度可达25MB/s,对高速数据传输系统的设计开发具有一定的借鉴意义。     

基于Slave FIFO模式的cmos摄像头接口设计

介绍了基于Cypress公司的CY7C68013芯片在Slave FIFO模式下cmos摄像头接口设计。利用USB2.0高速串行总线并通过设置中断标志位为cmos摄像头设计出高速稳定的数据接口。并给出了接口硬件电路和软件设计方法。     

基于DSP和Slave FIFO的USB2.0接口硬件电路设计

本文介绍了一种基于DSP和Slave FIFO的USB2.0接口硬件电路设计。针对数据传输瓶颈问题,设计采用DSP直接存储器访问(DMA)数据传输方式,实现了一个可工作于实时信号处理系统中的USB2.0接口。该接口使用Slave FIFO端口进行通信,可以有效利用USB协议带宽,提高数据传输速率,具有较高的实用价值。     

基于FPGA的高速实时数据采集系统设计

设计一款基于FPGA的高速实时数据采集系统,该系统采用FPGA作为控制器,主要完成通道选择控制及增益设置、A/D转换控制、数据缓冲异步FIFO三部分功能.系统采用Verilog HDL语言,通过软件编程控制硬件实现通道的选择和可编程增益放大器放大倍数的设置,利用FPGA内部自带的RAM设计16位的FIFO,实现数据的缓冲存储.这种基于FPGA的同步采集、实时读取采集数据的方案,可以提高系统采集和传输速度.系统的仿真验证结果显示,所设计的高速实时数据采集系统达到了预期的功能.     

基于USB3.0接口的高速数据传输系统设计

针对目前存储测试系统中存有的数据传输慢,经常出现错误的显著问题,设计基于USB 3.0接口的高速数据传输系统。该设计以FPGA作为主控芯片,采用负延迟与乒乓缓存的方式将A/D转换的数据高速缓存到DDR2 SDRAM中。设计了GPIFⅡ通用可编程接口和手动DMA通道,实现了USB 3.0同步从FIFO模式的高速数据传输。系统分析测试和实验结果表明,该系统实现了数据的高速可靠传输,能有效解决大容量数据采集后的数据高速传输问题。     

FPGA的USB2.0通信接口的开发

为了实现FPGA与USB之间的数据传输,介绍了USB2.0通信接口的硬件设计,USB固件程序的编写以及利用MFC编写上位机程序。通过把FPGA存储的数据用USB接口传输给上位机并保存,采用了USB的同步Slave FIFO的接口模式和Bulk的传输模式来传输数据。实验结果表明基于FPGA开发的USB2.0接口工作正常,满足USB2.0接口规范和设计要求。     

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.     

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.     

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.     

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.     

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.     

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.     

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.     

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.