Description: 本文主要研究单片机（80C51）在多点温度采集控制系统中的应用。通过A/D转换器ADC0809把集成温度传感器AD590采集的经过处理的模拟信号转换成数字信号，然后把转换好的数据传送给单片机，由单片机对数据进行有目的得操作。如，在数码管上实时显示温度值，把数据传送给上位机等等。-this study SCM (80C51) in multi-point temperature Acquisition and Control System applications. Through A/D converters Connection between ADC 0809 put Integrated Temperature Sensor AD590 after the acquisition of analog signal processing converted into digital signals and then converting good data to microcontroller, SCM by the data for a purpose in the operation. For example, in digital real-time display tube temperature, the transmission of data to the PC, and so on. Platform: |
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Author:王启才 |
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Description: 嵌入式图像采集处理与传输系统具有体积小、稳定性高等优点,在智能交通、电力、通讯、计算机视觉等领域应用广泛.随着DSP技术的发展,
在DSP上用软件实现实时视频压缩成为数字视频压缩标准应用的亮点,这种应用比起专门的压缩芯片更具有灵活性和升级潜力.
该文作者提出一种实现脱机视频采集、压缩编码和视频数据通信的方法.主要研究基于Tms320vc5402的视频编码器的软件实现方法和Tms320vc5402外围硬件系统设计.-Embedded image acquisition processing and transmission system has a small size, high stability, in the intelligent transportation, electricity, communications, computer vision and other fields are widely used. With DSP technology, used in the DSP software for real-time digital video compression video compression standard application of the bright spots in this application than the more specialized compression chip with the flexibility and upgrade potential. In this paper, the authors propose a realization of offline video capture, compression coding and video data communication method. major research based on the TMS320VC5402 video encoder software methods and realize TMS320VC5402 external hardware system design. Platform: |
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Author:QHLee |
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Description: 密聊"采用 2048bit 的 RSA 数据加密算法对数据进行加密和数字签名,由于 RSA 加密少量的信息需要大量的时间,适合用来传递密钥或对重要而敏感且较少的信息通讯.实现的消息通讯安全功能包括
1. 身份验证,使收件人确信发件人就是他或她就是公开密钥所对应的那个人
2. 机密性,确保只有预期的收件人能够阅读邮件
3. 完整性,确保消息在传输过程中没有被更改
4. 消息到达确认,发件人确认收件人收到了消息.-Micronesia chat using 2048bit of RSA data encryption algorithm for data encryption and digital signatures, RSA encryption as a result of a small amount of information requires a large amount of time, suitable for transmission of key or less important and sensitive information and communications. The realization of the news communications security features include 1. authentication, so that the recipient is convinced that the sender is that he or she is the public key corresponding to that person 2. confidentiality, to ensure that only the desired recipient can read the e-mail 3. integrity, to ensure that information during transmission has not been altered 4. confirm the news arrived, the author confirmed that the recipient received the message. Platform: |
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Author:ivan |
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Description: 高性能600MHz的TMS320DM642是可编程的数字多媒体处理器，为了了解其对于多媒体数据通信的支持，本文针对DSP芯片上的网络开发工具NDK进行了研究，测试了其在UDP传输过程中的CPU效率，对其在不同传输速率和二级缓存大小的条件下的表现给出了比较。说明了DM642是一款很适用于多媒体通信的数字信号处理器-The TMS320DM642 is a 600MHz high-performance programmable digital multimedia processor, in order to understand their data communication for multi-media support, this article on a chip for DSP development tools NDK Network conducted a study to test its presence in the UDP transmission efficiency of the CPU its at different transmission rates and secondary cache size is given under the conditions of performance are compared. Describes the DM642 is a very applicable to multimedia communications, digital signal processor Platform: |
Size: 64512 |
Author:lzp |
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Description: RSA 数据加密算法对数据进行加密和数字签名,由于 RSA 加密少量的信息需要大量的时间,适合用来传递密钥或对重要而敏感且较少的信息通讯-RSA data encryption algorithm for data encryption and digital signatures, RSA encryption as a result of a small amount of information requires a large amount of time, suitable for transmission of key or important and sensitive and with less information and communication Platform: |
Size: 60416 |
Author:北冥之鱼 |
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Description: 这是国标数字电视地面传输中生成矩阵的生成程序，只要按照MATLAB的格式输入国标附录1中的数据，就可以生成完整的G矩阵-This is the national standard of digital TV terrestrial transmission matrix generated in the generation process, as long as the input in accordance with the format of MATLAB Appendix 1 GB of data, we can generate the complete G matrix Platform: |
Size: 2048 |
Author:权大广 |
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Description: 这是根据国标数字电视地面传输（DMB-TH）附录1给出的数据生成的完整的G矩阵-This is in accordance with GB digital TV terrestrial transmission (DMB-TH) is given in Appendix 1 of the data generated by the complete G matrix Platform: |
Size: 5515264 |
Author:权大广 |
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Description: /*某公司采用电话传递数据信息，数据上一个小于8位的整数，为了安全
在传递的过程中许哟啊对数据进行加密，规则如下：先将数据拆分，
在将拆开的数字进行倒叙，热闹后每个数字在加上5，如果加上5之后
大于等于10的数就取除以10的余数，最后将最后一个数字和最前面一个数字进行交换。-/* A company telephone transmission of data, data on a less than 8-bit integer, in order to safety in the process of transfer Xu ah yo data encryption, the rules are as follows: first data split, will be opened in the number of conducted flashback, after the excitement of each figure to add 5, if coupled with greater than or equal to 5 after 10 of 10 divided by the number on the check the balance, the final will be the final figures and the top of a digital exchange. Platform: |
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Author:caray |
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Description: AVRMega16单片机的项目，开发环境：ICCAVr6.31A，可从网上下载。
实现串口传送数据并存到AT45DB系列的FLASH芯片中，用ZLG7290显示时间、数据到数码管，读取时钟芯片，完全使用了单片机的I2C、SPI、UART、INT0、IO口等，是一个典型单片机的全功能应用项目源码实现，可直接修改应用你的项目中。绝对可靠、可用，参考价值很高。-AVRMega16 SCM project, development environment: ICCAVr6.31A, can be downloaded from the Internet. Serial transmission of data to coexist AT45DB series FLASH chip, with ZLG7290 show time data to digital tube, read the clock chip, full use of the MCU I2C, SPI, UART, INT0, IO port, etc., is a SCM typical full-featured source application projects realize, you can directly modify the application of the project. Absolutely reliable, usable, high reference value. Platform: |
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Author:朱效志 |
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Description: 移动通信基本知识:从通信网的角度看，移动网可以看成是有线通信网的延伸，它由无线和有线两部分组成。无线部分提供用户终端的接入，利用有限的频率资源在空中可靠地传送话音和数据；有线部分完成网络功能，包括交换、用户管理、漫游、鉴权等，构成公众陆地移动通信网PLMN。从陆地移动通信的具体实现形式来分主要有模拟移动通信和数字移动通信这两部种。-Basic knowledge of mobile communications: From the perspective of communication networks, mobile networks can be seen as an extension of wired communication network, which is both wireless and wired components. Part of user terminals to provide wireless access, frequency of use of limited resources in the air and reliable transmission of voice and data wired part of the completion of network functions, including switching, subscriber management, roaming, authentication and so on, constitute a public land mobile communication network PLMN. From land-based mobile communications to the specific forms of the main points have analog and digital mobile communications that two kinds of mobile communication. Platform: |
Size: 216064 |
Author:卜玮 |
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Description: DMX512协议最先是由USITT（美国剧院技术协会）发展成为从控制台用标准数字接口控制调光器的方式，但是传统上的信号传输依赖于485接口方式的双绞线，在使用灵活上大打折扣！而基于TCP/IP的无线传输由于时延大，控制数据实时性差等，也很难满足需求-DMX512 protocol is the first USITT (United States Association of Theater Technology) to develop into from the console using a standard digital interface control dimmers way, but traditionally dependent on the signal transmission means 485 of the twisted pair, the reduced flexibility in the use of ! And based on TCP/IP wireless transmission delay due to large, poor real-time control data, it is difficult to meet demand Platform: |
Size: 908288 |
Author:eastward |
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Description: 1.通过PC端的串口调试工具，从PC端发出一个十六进制的数， 通过串口传输到单片机，并有单片机通过LED数码管显示其ASII码，而且单片机又将这个数发回PC端，并在PC端显示出来，从而实现单片机与PC机的通讯
2.可以实现对下位机数据实时采集（如温度,程序中设定的是37摄氏度）
3.可以控制流水灯或继电器开关等-1. Through the PC-side debugging tools for serial port, from the PC client sends a hexadecimal number, by serial transmission to the microcontroller, and a single-chip through the LED digital tube display its ASII code, but also single-chip microcomputer this number back to PC client, and displayed in the client PC in order to achieve single-chip microcomputer and PC-communication 2. can be achieved for the next bit of real-time machine data collection (such as temperature, the procedures set is 37 degrees C) 3. flowing water can be controlled such as lights or relay switch Platform: |
Size: 1024 |
Author:国庆 |
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Description: At89C51与MAX186串行A/D采样程序。采集三个数码盘启动阈值，并通过串口发送到上位机。(绝对经典的单片机数据采集与传输程序，我一直在用)-AT89C51 with MAX186 serial A/D sampling procedures. Acquisition of three digital disk threshold, and through serial port is sent to the host computer. (Absolute classic single-chip data acquisition and transmission program, I have been in use) Platform: |
Size: 18432 |
Author:孙琨 |
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Description: 第1章 用于可靠数字传输和存储的编码
第2章 代数引论
第3章 线性分组码
第4章 重要的线性分组吗
第5章 循环码
第6章 二进制BCH码
第7章 非二进制BCH码、RS码及其译码算法
第8章 大数逻辑可译码有限几何码
第9章 线性分组码的网络
第10章 基于可靠性的线性分组码软判决译码算法
第11章 卷积码
第12章 卷积码的最优译码
第13章 卷积码的次优译码
第14章 基于网络的软判决译码算法
第15章 级联编码、码分解与多阶段译码
第16章 Turbo编码
第17章 低密度单奇偶校验码
第18章 网络编码调制
第19章 分组编码调制
第20章 纠突发错误码
第21章 纠突发错误卷积码
第22章 自动请求重传（ARQ）策略
附录A 伽罗华域的表
附录B GF（2m）中元素的最小多项式
附录C 长度至2 10-1的二进制本原BCH码的生成多项式
9.6 卷积码
-Error-controlled coding techniques are used to detect and/or correct errors that occur in the message transmission in a digital communications system. Wireless personal channels used by mobile communications systems and storage systems for digital multimedia data all require the implementation of error control coding methods. Demonstrating the role of coding in communication and data storage system design, this text illustrates the correct use of codes and the selection of the right code parameters. Relevant decoding techniques and their implementation are discussed in detail. Providing communication systems engineers and students with guidance in the application of error-control coding, this book emphasizes the fundamental concepts of coding theory while minimising the use of mathematical tools.
* Reader-friendly approach ti coding in communication systems providing examples of encoding and decoding, information theory and criteria for code selection
* Thorogh descriptions of releva Platform: |
Size: 2500608 |
Author:zhao yongqiang |
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Description: 音频信息在人们的工作和生活中具有非常重要的作用，数字化的音频信息的数据量也相当巨大，为更好地存储、传输和使用数字化的音频信息需要对音频信息进行标准化的编码压缩。本文简要介绍音频编码标准的发展现状及发展趋势。-Audio information in people' s working and living in a very important role in the digital audio information is also a huge amount of data, for better storage, transmission and use of digital audio information of the need for standardization of information in audio coding. This paper introduces the development of audio coding standards and development trends in the status quo. Platform: |
Size: 8192 |
Author:easion |
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Description: 用VC++实现的数字图像处理研究在信息处理和信息传输中,为了提高处理和传输的效率并减少信息损失量,需要将大量信息进行压缩编
码. 数字图像处理中的变换域压缩编码技术是将图像信号以图像数据块为单位作二维变换,然后对各变换系数逐
个地进行量化和编码,达到压缩信息的作用. 离散余弦变换(DCT)在实数域中得到变换结果,并且有快速算法.-Using VC++ to achieve the digital image processing research in information processing and information transmission, in order to improve the efficiency of processing and transmission of information loss and reduce the need for large amounts of information coding. Digital Image Processing in the compressed transform domain coding techniques is image signal to image data block as a unit for two-dimensional transform, and then one by one of the transform coefficients to be quantified and coded, to reduce the role of information. discrete cosine transform (DCT) domain in the real results have been changing, and fast algorithm. Platform: |
Size: 201728 |
Author:王叶 |
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Description: 简要介绍无线传感器网络,给出基于MSP430F1xx 系列单片机的无线传感器网络节点制作及组网设计
方案 结合射频收发一体的NORDIC 系列芯片和新型数字传感器,设计可组建无线网络的探测节点,实
现对监测区域内相关物理信号的采集 给出组网设计中相关技术研究。通过实验表明,制作的传感器节
点在数据采集和传输过程中有较高的可靠性。-The brief introduction wireless sensor network, gives based on the MSP430F1xx series monolithic integrated circuit s wireless sensor node manufacture and the network designs the plan The union radio frequency receives and dispatches a body s NORDIC series chip and the new digital sensor, the design may set up the wireless network the survey node, solid presently to monitors in the region to be related the physical signal gathering Gives in the network design the correlation technique research. Indicated through the experiment that manufacture sensor festival has the high reliability in the data acquisition and the transmission process. Platform: |
Size: 689152 |
Author:萧山 |
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Description: 通过通信系统BPSK数字传输仿真，实现数字信号的输出、调制、加噪、滤波、再仿真接收端恢复原始数据-BPSK communication system through the simulation of digital transmission, digital signal output, modulation, noise, filter, and then restore the original simulation data on the receiving end Platform: |
Size: 1024 |
Author:王丽越 |
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Search - digital data transmission