查询词典 analog to digital

This invention relates to a DC linear motor digital controller including a central processor circuit, a data memory, a program memory, an A/D conversion circuit, a D/A conversion circuit, a linear shift orthogonal code pulse signal circuit, a signal isolation circuit, among which, the center processor circuit is composed of a special DSP chip controlled by the motor, a complicated programmable logic device CPLD combining with a peripheral expanding circuit, said digital controller fully utilizes the motor to control the special DSP chip to integral DSP kernel CZXLP and the rich external circuit in a single chip to make up of a digital controller for controlling high frequency response DC linear motor with small volume, low dissipation and high reliability.

高频响直流直线电机数字控制器，属于电机自动控制技术领域，目的在于获得快速、高精度往返运动的控制效果，实现高频响直流直线电机的精密位置跟踪控制功能。本发明包括中央处理器电路，数据存储器，程序存储器，A/D转换电路，D/A转换电路，直线位移正交编码脉冲信号电路，信号隔离电路；中央处理器电路由一个电机控制专用DSP芯片，复杂可编程逻辑器件CPLD，结合外围扩展电路组成。该数字控制器充分利用电机控制专用DSP芯片将高性能DSP核C2xLP和丰富的功能外设电路集成在单个芯片上这一特点，构成了一个体积小、功耗低、可靠性高和功能比较齐全的高频响直流直线电机控制用的数字控制器，使系统的整体成本大大降低。

Digital signature ; proxy digital signature ; discrete logarithmic problems ; elliptic curve discrete logarithmic problems ; elliptic curve digital signature algorithm

数字签名；代理数字签名；离散对数；椭圆曲线离散对数；椭圆曲线数字签名

Several high speed signal processing technologies of wideband digital receivers,including monbit IFM technology,polyphase channelized technology,channelized digital receiver based on FFT and RF bandpass sampling microwave digital receiver,are discussed in detail.

详细讨论了宽带数字接收机的几种高速信号处理技术，包括单比特瞬时测频技术、多相滤波信道化技术、基于FFT的信道化接收机和射频带通采样微波数字接收机，最后提出了在宽带中频数字接收机高速信号处理领域需要深入研究的有关技术。

By use of the strong technology research power and exquisite manufacturing techniques, the company has released DVB-C cable digital TV front-side and terminal system, DVB-MS/MC Microwave digital TV front-side, transmitter and terminal system, and DVB-TH terrestrial digital multimedia TV broadcasting terminal equipments and so on.

公司凭推出了DVB-C有线数字电视前端及终端系统、DVB-MS/MC微波数字电视前端、发射及终端系统、DMB-TH地面数字多媒体电视广播终端设备等产品。

Wuhan Kangda Electrical Co Ltd - insulation tester and earth resistance tester, water-cooled dynamotor insulation tester, electronic insulation tester, electronic insulation/continuity tester, digital insulation/continuity tester, grounding of network, earth resistance tester, lightning protected component tester, high value standard resistor, digital micro-ohm meter, phase indicator, DC milliammeter, digital level meter

武汉康达电气有限公司-电气仪表，内冷发电机绝缘特性测试仪，电子式指针绝缘电阻表，指针绝缘/导通电阻表，接地电阻测量仪，大地网地阻仪，等电位连接电阻测量仪，防雷元件测试仪

Domestic and overseas new technologies about conference system based on digital network in recent years are introduced, namely digital processing and transmission, high-frequency and infrared transmission, NOMA, mute corresponding interaction, camera shot auto tracking, video conference system, interactive digital board, multi-assembly-room system control, and audio-video and lighting network centralized control platform technology.

着重介绍近年国内外基于数字网络的会议系统新技术如数字处理和传输、高频和红外传输、NOMA、哑声对应互动、摄像自动跟踪、会议电视、交互数字白板以及多会议室系统控制和声像灯光网络化集控平台等技术，并举出典型的应用实例。

One of the ways to solve the problem above is actualizing the digital corresponding, transforming the image to the digital signals, wiping off the redundancy outlying of the image quality. Furthermore, on the precondition of ensuring the quality, storaging, recording and transmitting the digital signals is oecumenical, credible and all wool and a yard wide using least bits or bits ratio.

解决这个问题的途径之一，是实现图像通信的数字化，把图像信息转换成数字信号，去除与图像质量无关的冗余信息，并且在保证质量的前提下，用最少量的数码或数码率，实现各类图像的数字存储、数字记录或数字传输，达到优质、可靠、经济的要求。

As a new development in the field of electronic oscilloscopes a hand-held digital oscilloscope is a truly integrated test tool, with digital storage oscilloscope, multimeter and digital ondometer in one easy-to-use instrument.

手持式数字示波表是示波器技术的一个新的发展方向。

Digital city originate from digital earth, and it is a part of digital earth.

数字城市来源于数字地球，是数字地球的组成部分。

Author Freddie E Williams II is one of DC Comics' hottest artists and a leader in digital penciling and inking-and here, in clear, step-by-step directions, he guides readers through every part of the digital process, from turning on the computer to finishing a digital file of fully inked comic art, ready for print.

作者弗雷迪威廉姆斯第二的位置是一种DC漫画'最热门的艺术家和一个数字penciling和墨领导人在这里，清晰，一步一步的指示，通过每一个数字化进程的一部分，他引导读者从车削，计算机完成一个充分签署的幽默艺术，数字文件，准备打印。

Objective:To explore the feasibility of laparoscopy in diagnosing and treating of abdominal diseases.

目的：探讨腹腔镜用以诊断腹部外科疾病及选择治疗方案的可行性。

The lifetime of nylon 1010 and nylon 1010/POSS composites decreased with increasing temperature.

热重-红外联用分析表明尼龙1010在氮气气氛下的降解产物主要为小分子的低聚物，POSS并不改变尼龙1010降解产物的组成。