查询词典 digital signal processing

The history of digital signal processing and the digital signal processor is reviewed.

文章简要介绍了"数字信号处理"与"数字信号处理器"的发展历史。

On the basis of 16 bit digital signal processing TMS320VC5402, the system of speech information sampling is designed and the memory of digital speech signal is realized. The design of hardware and the program flow chart of the system are proposed.

在研究数字信号处理的基础上，实现基于16 bit数字信号处理器TMS320VC5402的语音信号采集和数字信号扩展存储系统，给出了系统硬件设计和软件流程图。

It discusses the design of hardware circuit of the vector analyzer, including the design scheme, the module of microwave receiver, digital IF, capture base signal, and Digital Signal Processing.

在硬件方面详细介绍了总体设计方案、微波接收模块、中频调理和数字化模块、基带信号捕获和数字信号处理器模块等。

An apparatus and method for a digital image device having an image-capturing device for photoelectrically changing an optical image focused through a lens unit, and for converting a signal output from the image-capturing device into a digital signal and processing input color data which is output in a predetermined period are disclosed.

用于具有图像捕获装置的电子图像设备的装置及方法，用于光电变换经透镜聚焦的光学图像，并将图像捕获装置输出的信号变成数字信号及处理在预定时段输出的输入色彩数据。

A design and implementation method of the high speed modulation system, which adopted the new techniques of the FPGA and DAC based communication system,is presented in this paper. The effect of the key techniques of this system, such as the high speed digital signal processing for modulation, high speed based-band signal conversion, wide-band modulation, carrier suppression, high frequency and high precision system clock generation, is analyzed, and the solutions and performance analysis is also given. Finally, a high speed modulation system for space applications is implemented, can be used for high speed data transmission with QPSK, 8PSK, QAM or other kinds of digital modulation.

本论文依据正交调制原理，采用基于FPGA和DAC的设计技术，提出了一种高速、灵活的调制系统的设计方法，重点分析了系统组成的调制编码映射、基带脉冲信号转换、信号滤波、调制、系统时钟产生等关键技术环节的影响，解决了高速调制信号处理、高速数据转换、宽带调制、载波抑制、高频率高精度系统时钟的产生等关键技术问题，完成了一种适用于空间应用的高传输速率、多进制数字调制方式和调制体制灵活的数据传输调制系统的设计与实现，可在硬件设计不变的情况下，实现QPSK、8PSK和16QAM等多种调制方式的高速数据传输，QPSK调制速率达到500Mbps。

This paper discribes the theory of fluorography and digital image processing, and designs a digital radiologic imaging and processing system based on special hardware for different X-ray machines. The research includes software design and man-machine interface as well as digital image communications and archive in medicine.

本论文在X线数字理论的基础上，针对具体的数字采集和处理硬件设备，设计并实现适用于不同X光机的数字成像及后处理系统，主要包括X线数字成像系统的软件控制和人机交互应用，并在医疗数字图像的传输与归档方面进行了一些探索。

Renli fully satisfies the requirements of Implementation of Surgical Implants Production. It's equipped with a complete set of equipments for vacuum casting processing line, such as vertical processing center, horizontal digital control lathe, digital control straight-cut automatic lathe, vertical digital control milling machine, four-column hydraulic pressure machine, a complete double-die automatic cold header, electric cutting machine,laser labeling machine, intellectual pneumatic labeling machine, bar code labeling machine, etc., totally over 130 sets of automatic and/or general equipments. It also owns 10,000 class clean rooms and relevant manufacturing and monitoring equipments. The sterile packaging

公司已完全具备《外科植入物生产实施细则》的要求，拥有真空铸造生产线的整套设备；拥有数控立式加工中心、卧式数控车、数控纵切自动车、立式数控铣、四柱液压机、双摸整机自动冷墩机、电火花切割机、激光打标机、智能气动打标机、条形码标签机等各类高精自动设备和通用设备 130 余台套；具备 10 万级洁净厂房和相应配套的生产和质量监控设备，可在封闭洁净厂房里操作外科植入物产品的无菌包装；具有满足生产全过程和最终成品的金属材料化学成份分析、力学性能检测、硬度检测、金相检测、粗糙度检测、表面缺陷检测、形位曲面检测等的理化检测仪器和设备，能有效控制产品的质量。

A novel method of measuring plus lens's focus is given, which is based on LCD, CCD, and digital image processing It is also a discussion on photoelectric method of automatically measuring parameters of an optic system In this method, a LCD is used as a reticle of the collimator, while the image on the accepting side is transformed into digital image and is sent into a computer The focus can finally be calculated out through digital image processing and analysis The method of measurement is introduce...

讨论了一种基于LCD、CCD和数字图像处理的正透镜焦距测量方法，是光电法自动化测量光学系统多个参数的一种有益的探讨。用液晶屏显示分划图形取代平行光管的分划板，用CCD在接收方采集数字图像并送入计算机，通过图像处理和分析得出被测透镜的焦距。运用叠加的方法提高图像的信噪比；结合重心法和平行线拟合方法求取平行线对的间距；应用高精度焦距标准透镜标定数字图像和实际像之间的比例关系。详细介绍了测量和图像处理的方法，进行了公式推导和误差分析，并给出了实验结果

In the aspect of Opto—electrical signal processing, because the heterodyne interference signal is a high frequency fringe signal, how to measure the phases change of this signal——including the integer part of phases change over 2π and decimal part of phases change within 2π, is a difficult problem in electrical circuit technique.

一方面，该电路能同时测量出相位改变量的2π整数部分和2π以内的小数部分，从而实现了大量程和高精度的统一；另一方面，由于该电路是模拟电路，其最高工作频率可以远大于由数字集成电路组成的条纹计数电路，故在实际应用中，其工作频率的设计范围能够适应较宽的外差干涉差频范围，这就为高速激光外差干涉测量打下了基础。

This thesis is focus on the detection and processing of fluorescence signal based on TRFIA, the signal includes single signal and multidrop signal which is biological chip.

首先分析了荧光信号产生的机理，在此基础上考虑到荧光信号十分微弱的特点和在强噪声背景环境下检测，设计了基于数字BOXCAR的信号检测系统。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。