data frame造句
例句与造句
- A standardized communication protocol is running on all instruments , which is built by ourselves and has the code name of flexlynx , it provide complex functions like data frame generation , data integrity check and time - out retransmission , so that data maintain its integrity while exchanging between pc and instruments
所有的子系统均运行相同的终端通讯协议，我们自行设计并称之为flexlynx的协议，这种基于串行口物理设备的协议提供数据包组装，复杂数据校验和超时重传等机制保证可靠的数据传输。 - By utilizing the busy tones to realize the multicast reliability , rmac has three novelties : it uses a variable - length control frame to stipulate an order for the receivers to respond , thus solving the feedback collision problem ; it extends the usage of busy tone for preventing data frame collisions into the multicast scenario ; and it introduces a new usage of busy tone for acknowledging data frames positively
例如， ieee 802 . 11 ,现今应用最广泛的无线mac协议，仅在单播unicast通信方式下提供可靠数据传输服务，而对于组播和广播两种通信方式，它仅传输数据一次，即使数据传输出错，也不会重传。然而近几年来，由于无线网络应用的蓬勃发展，人们逐渐认识到在mac层提供可靠组播服务是非常必要的。 - In the first part of this thesis , current situation of the access network and the technical of pon are introduced briefly . then , the epon system structure , osi protocol model , especially the mpcp sublayer are introduced , the epon control frame and data frame changed form ethernet frame are analyzed
本文首先介绍接入网技术的发展状况和无源光网络的主要技术类型,以及epon系统的网络结构、 osi分层模型,重点介绍epon系统特有的mpcp子层,分析epon系统对以太网数据帧所做的修改和新添加的epon控制帧。 - The paper would make a study of construction data frame of large - scale ugis in order to make a sound theoretical ground of the construction of digital city . in the paper , the author brought forward firstly of scheme of topologic coding on ugis classification and coding based on streets and administrative districts according to the existing national standards of ugis classification and coding and corresponding digital city " methods of classification and coding
在参照国家现有的城市地理信息分类与编码标准和相应的数字城市分类与编码方案的基础上，针对大比例尺城市地理信息系统对城市地理信息分类与编码的要求，作者首创性的提出了绑定式的城市地理信息分类体系与拓扑编码方案。 - The requirement of system is analyzed in detail . the developing tool and the developing environment are also introduced . because of the complexity of the data frame in this system , a data frame in point is researched to make it useful in the agricultural mechanization information system
对软件的需求进行具体的分析，建立系统的开发环境，选择开发工具，针对webg工s与农机化信息管理系统结合开发时系统数据的复杂性，对系统的数据组织进行了研究，为系统设计一个科学合理的数据组织模型。 - It's difficult to find data frame in a sentence. 用data frame造句挺难的
- Based on the dsp development board , the author finishes the hardware debug about the multi - channel buffered serial port ( mcbsp ) receiving the output signal from the gps if collector and resolves the software program of the receiving buffer of the multi - channel synchronous serial data , data integration , udp datagram encapsulation and network interface driver , etc . the real - time udp datagram receiving , data frame de - encapsulation and high speed data memory are implemented , and a friend application interface with windows message is developed on the pc
基于dsp开发板,作者完成了dsp的多通道缓冲串口( mcbsp )接收gps中频接收机输出信号的硬件调试,并解决了多通道同步串口数据的接收缓冲、数据合并、 udp数据报装帧及网络接口驱动等软件编程。在pc端,通过mfc的网络应用开发类casyncsocket实现udp报的实时接收、数据解帧译码、高速存贮,利用windows消息机制开发了应用程序友好界面。 - It can be used in any complex environment , can locate all paths from transmitter to receiver which avoid redundant calculation , and it is a standard 3 - d forecast model ; in addition , it is a point to point ray tracing method based on specular theory which do n ' t carry out the receive test ; furthermore the model adopt the reverse arithmetic which exert the tree concept in data frame and establish a virtual fountain tree permanently , the proagmme can back - search the virtual fountain tree when it is running . these operation increase the calculate speed and it result in the higher receive efficiency and precision . the thesis design a programme to compare the prediction results based on ray tracing method of virtual fountain tree between the measurement results and prediction results based on the other transmittion models . the comparsion result indicate the new model is a better model
它可应用于任何复杂的传播环境中，能找到发射机到接收机之间的所有电波传播路径而无须冗余的计算，是一种准三维的预测模型；另外，从本质上讲，它仍然是一种基于镜像理论的点对点的射线跟踪法，所以它无须进行接收测试；而且由于采用了反向算法，运用数据结构中多叉树的概念，先确定需要计算的场点位置，找出所有能从源点到达场点的射线，并且可一次性建立一个虚拟源树，以后每次的计算只要通过对该树进行后序遍历即可，大大提高了运算速度，因而有较高的接收效率与精度。本文对该模型进行了相应的仿真，并将其预测结果与实测结果以及基于cost231经验性模型和基于强力射线跟踪确定性模型的预测结果进行了比较，结果表明了该模型的优越性。 - This paper presents a kind of data frame structure applying 8 - bit microcomputer 87c591 of philips . it can transfer data more than 8 bytes based on can specification 2 . 0a and makes up for the shortage of can specification 2 . 0a that can only transfer data less than 8 bytes . at last this paper gives the design of can protocol of application layer based on the data structure and attains the convenient and prompt transmission through can bus
本文采用philips公司推出的集成在片can控制器的高性能8位单片机87c591 ，以can技术规范2 . 0a为标准，从可行性、高效率出发，按系统的特点设计了一种数据传递格式，它解决了canv2 . 0规范只能传递小于8字节数据的缺点，实现了大于8字节数据的准确传输。 - The subject has mainly finished designing and debugging software and hardware of a / d decode module , fpga video processing module , video data frame deposit module , base clock produce module , d / a encode module , i2c bus control module , etc . a / d decode module gathers analog tv signals and realize video decode ; fpga video processing module deals with the data after decoding and produces systematic logic control signal ; video data frame deposit module offers the buffering area to a large n umber of high - speed video data ; base clock produce module through input basic video signal offers system accurate relevant synchronous signal ; under control of video processing module d / a decode module convert digital video data into compound tv signal which can be shown in tv directly ; i2c bus control module is used to initialize the chip of system by simulating i * c bus timing
本课题主要完成了a d解码模块、 fpga视频处理模块、视频数据帧存模块、基准时钟产生模块、 d a编码模块、 i ~ 2c总线控制模块等部分软、硬件设计及调试。其中a d解码模块采集模拟电视信号实现视频解码； fpga视频处理模块对解码后的数据进行去噪处理的同时还负责系统的逻辑控制；视频数据帧存模块为大量高速的视频数据提供缓冲区；基准时钟产生模块通过输入基准视频信号为系统提供精确的相关同步信号； d a编码模块在视频处理模块的控制下把数字视频数据转换成复合电视信号供显示用： i ~ 2c总线控制模块模拟i ~ 2c总线时序实现对系统中编、解码芯片的初始化。
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