This article describes a full structure of dicom . . on the base of sufficiently understand dicom , designed all types of pdu ( protocol data unit ) and realized dicom communicating model based ( 2 )在充分认识标准的基础上,封装了各种类型的协议数据单元,实现了基于tcp / ip协议的dicom网络通讯模型。
Taking the study of baseline privacy in docsis as down - lead , this paper discusses des encryption algorithms and its security , then basing this implements encyption of docsis mac data units using it 以研究docsis协议中的基线加密标准为引线,详细讨论des算法及其安全性,以此为基础,研究和实现docsismac层数据单元的des加密。
The physical interface , communication procedure and working model used by nrdp were also introduced . with respect to the nakp , the data unit , state - changing procedure , the service classification as well as the implementation for nakp were offered 对于位于a层与k层之间的nakp ,分析了nakp与k层主控模块的接口,以及基于其上的nakp状态变迁。
In a3790 or dpcx application program , a set of programming statements that define the contents and structure of a data unit by specifying pages , lines in pages , fields within lines , and items within fields 在3790或分布式处理控制执行程序( dpcx )应用程序中,一组程序设计语句,它通过规定页、页中行、行中字段、字段中项的办法确定数据单元的内容和结构。
Information technology - telecommunications and information exchange between systems - local and metropolitan area networks - specific requirements - part 2 : logical link control - supplement 7 : optional toleration of duplicate information transfer format protocol data units 信息技术.系统间远程通信和信息交换.局域网和城域网.特殊要求.第2部分:逻辑传输控制.补充7 :复制信息转换方式的兼容
The parts of smart card electronic characteristic , signal timing , character transmission protocol defined in standard are implemented by hardware , and atr data analysis , application protocol data unit transmission refered by standard are implemented by software 其中,对标准中定义的智能卡电子特性、信号时序以及字符的传输协议等部分由硬件完成,而标准中涉及到的atr数据包解析,应用协议数据单元等部分由软件实现。
Discrete fourier transform is a special word for computers to fourier transform , so dft is adapted for computers to caculate . fast fourier transform is a kind of method to decrease the time used in dft . matlab makes matrix and vector as basic data unit 离散傅立叶变换( discretefouriertransform )并非泛指对任意离散信号取傅立叶积分,而是为适应计算机作傅立叶变换运算而引入的一个专用名词,所以dft是适用于数字计算机计算的ft 。
On the one hand of hardwar : first of all , the thesis introduces the interiror structure of pic18f8260 and its distinguishing with other singlechip ; secondly , having narrated the structure and performance of gsm communicate module - tc35i module and the hardware performance process of communications interface of gsm ; thirdly , having studied the drived principle and dynamic scanned circuit of led ’ s panel ; lastly , having put forward serial interface circuit which the application of system . on the other hand of software which have accomplished the running of hardware : in design , utilizing mscomm control to realize the serial communication between computer and cell phone , utilizing at command to realize the cell phone control and sms receiving and sending operation , the pdu ( protcol data unit ) 设计上,利用mscomm控件实现计算机与gsm模块间的串口通信,使用at指令实现对gsm模块的各种控制和短信的收发,分析发送和接收短消息的pdu ( protcoldataunit )格式、短信内容、手机号码、 smsc (短消息服务中心)号码等;单片机与pc机之间的通信采用pic中c语言和c + +语言编程,以中断方式实现pic18f8260与led的通信,同样利用mscomm控件从汉字字库的提取点阵码,最后显示在led上。