查询词典 digital data

At the same time, those design indexes is realized well by means of selecting superior performance electronic apparatus abortively. Because of a great deal of digital EEG data and the demands on real-time display and synchronous data acquisition, a kind of multi-channel synchronous data acquisition system is

由于数字化的脑电信号数据量大，为满足实时显示以及同步采集脑电信号的要求，设计出了基于双端口和USB通讯接口的多通道同步数据采集系统，使脑电图仪与微机之间进行高速、可靠的数据传输成为可能。

After that, the issue, which should be solved in the picture additive process, is discussed in detail. On the base of analyzing digital television signal data construction, TBC processes is put forward to apply in each group signal. Effective data taken off from the key signal is also solved. And the choice and insertion is used to protect assistant data.

接着，详细讨论了在图像叠加过程中应解决的问题，在分析了数字电视信号数据结构的基础上，提出了对各路信号进行TBC处理的方法，同时解决了对键信号进行有效数据提取的问题，并通过选择插入的方式对辅助数据进行了保护。

Digital signature operates the born and a series of sign and codes to constitute the electronics password to carry on the signature through a certain password , replace to the writing signature or an official seals , to confirm the body , the data source and integrities of signs , keeping data from burglarize to take , distort and break , thus to attain the purpose of protecting the data

数字签名是通过某种密码运算生成一系列符号及代码组成电子密码进行签名，来代替书写签名或印章，确认签名者的身份、数据来源和完整性，防止数据被窃取、篡改和破坏，从而达到保护数据的目的。

Improve pixel camera, the digital interpolation to increase ordinary resolution would be tantamount to fraud, in the definition and image quality without any improvement; On the other hand to improve the image quality and resolution, the amount of data is bound to geometry class increase the number of not only USB protocol can not keep up the speed of data transmission, data transmission networks also can not keep up.

摄像头提高像素的话，一般通过数字插值提高分辨率，这就等于弄虚作假，在清晰度和图像质量方面没有任何改进；另一方面若要提高图像质量，提高分辨率，数据量就必然几何级数地增加，不但USB协议的数据传输速度跟不上，网络数据的传输更跟不上。

Some technical problems, such as multi-scale data processing of digital map for transportation GPS service system, are solved by conflation which unites different data source to a new optimal road network data set.

针对交通运输GPS服务系统电子地图制作中多尺度路网的数据处理、高分辨率卫星遥感数据的几何校正、路网提取等技术问题，利用数字合并技术将不同的数据源合并为一个新的、最优的路网数据集，新和优表现在空间和属性两个方面。

As an important technology on data authentication, digital signature can be used to identify the instance of denying, forgery, tamper and imitation in today's communication network. It can provide the data integrity, figure authentication, and also prevent from disavowal of a sender during data transmission.

在现代的数字通信网络中，数字签名作为数据认证技术中的一项关键技术，可以解决否认、伪造、篡改及冒充问题，用来保证信息传输过程中的完整性，提供信息发送者的身份认证和不可抵赖性。

And another use of FPGA is that provide DSP original data. DSP is used as digital filters used by sampling at the foreside and at the export correspondingly.The original data used by DSP is taken from the first adder in the circle. After the DSPs disposal,the output data are sent to guidance system.

总的说来，PGGA主要实现整个系统的时序控制和闭环回路，以及为DSP提供原始滤波数据；而DSP主要的工作是从PGGA那里取来第一个加法器输出的数据作为原始数据，再对数据进行滤波处理，最后的处理结果作为转速的信息送给捷联惯导系统。

The main research methods are:(1)Theory analysis:from the 2D plane geometry analysis, dots continuity characteristics are found. The first time irrational fraction algorithm is used in FM program.(2)Experiments reaearch:experiments of condition halftone function are designed under the cross-experiment principles. The first time variable information printer and C# language are used in experiment.(3)Data processing:new type digital density apparatus is used to measure data. Compare is used in processing data and error cause are explained. The main works as follows:The dot area percentage has been gained and new condition halftone function has been set up.(2)After being corrected, speed of irrational fraction algorithm has been compared with multiplicative congruence algorithm's.

本文的主要研究方法有：(1)理论分析：运用数字加网原理，从二维平面几何分析入手，借助实验验证研究网点连续特性；首次系统地把无理数取尾法随机数生成器引入到调频加网系统中，根据实验修正生成器的模型，运用统计假设检验理论，对生成的随机数序列进行统计假设检验；(2)实验研究：根据正交实验法则设计实验，首次采用可变信息印刷机(HP Laser PS印刷机)输出实验样张，克服了用传统胶印机作实验影响因素多的缺陷；采用新型数字式密度仪测量密度值，提高了数据精度；采用最新编程语言编写调频加网程序；(3)数据处理与分析：利用平均值比较法处理数据，对误差产生的原因进行讨论。

The objective of this research is focusing on the printing halftone image on papers to make an experiment on data hiding and recognition to combine the data hiding technology with digital halftoning algorithms to produce data hiding in halftone image and to process the data recognition after optical retrieving of images.

本研究针对纸张上印刷过网图像进行加密与比对辨识实验，将资料加密技术结合数位过网演算法制作网点加密图像，并对图像进行光学撷取后再进行资料辨识。

The acquisition date of ETM+ is October 29, 1999. We get digital elevation model data from (1∶)250 000 topography map of Minhe area. The format of DEM is MapInfo exchange format *.mif which converted to coordinate. After primary treatment of the raw data, the DEM data is derived from the contour line. The ETM+ scenes are rectified using the DEM and sun-illumination model. NDVI and other three indexes from Tasseled Cap transform were calculated from RS data.

依据其理论方法，对青海省民和地区的遥感数据--ETM+进行了分类，选用的ETM+数据为1999年10月份数据，数字高程数据来自于1：25万民和幅地形图，数据格式为MapInfo通用格式MIF，数据进行了坐标转换，对原始数据进行了处理，从等高线中提取数字高程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。