Description: 文字、声音、图像等各种媒体信息本身是模拟的，只有数字化后才能由计算机平台进行各种处理和综合。实现对多媒体信息的交互处理，必须对各种媒体进行数字化，而文字、声音、图像等数字化信息的数据十分庞大，不仅造成存贮和传输的困难，而且计算机的总线也不能承受，尽管有许多方法可以提高计算机的传输能力，但都不能彻底解决问题。-Text, sound, images and other media information itself is analog only digital before processing by the various computer platforms and integrated. Realize the interactive multimedia information processing, the various media must be digital, and text, sound, images and other digital information of data is enormous, not only caused difficulties in storage and transmission, but can not afford the computer bus, despite many method can improve the transmission capacity of the computer, but can not completely solve the problem. Platform: |
Size: 10240 |
Author:巫长林 |
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Description: 数字图像，又称数码图像或数位图像，是二维图像用有限数字数值像素的表示。
通常，像素在计算机中保存为二维整数数阻的光栅图像，这些值经常用压缩格式进行传输和储存。
数字图像可以许多不同的输入设备和技术生成，例如数码相机、扫描仪、坐标测量机、seismographic profiling、airborne radar等等，也可以从任意的非图像数据合成得到，例如数学函数或者三维几何模型，三维几何模型是计算机图形学的一个主要分支。数字图像处理领域就是研究它们的变换算法。
-Digital image, also known as digital images or digital images, is the two-dimensional image with a limited number of pixels of that value.
Typically, the pixels stored in the computer as an integer number of two-dimensional block of raster images, these values are often compressed format for transmission and storage.
Digital images can be many different input devices and technology generation, such as digital cameras, scanners, coordinate measuring machines, seismographic profiling, airborne radar, etc., also can be from any of the non-image data integration by, for example, mathematical functions or three-dimensional geometrical model three-dimensional geometric model is a major branch of computer graphics. Digital image processing is to study their transformations. Platform: |
Size: 2048 |
Author:gaofeng |
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Description: mege16单片机最小系统板+数码管+键盘，选用异步通信端口，对键盘采集的数据进行传输，在数码管上显示出来相关的数据-mege16 microcomputer control system board+ digital+ keyboard, use asynchronous communication ports on the keyboard for transmission of data collection, displayed on the digital control data related to Platform: |
Size: 55296 |
Author:xiachong |
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Description: 该程序代码基于8051单片机进行无线温湿度采集，通过AM2301进行温湿度数据采集NRF2401进行数据通信，将采集的数据实时传输到数码管上显示-The program code is based on 8051 wireless temperature and humidity, temperature and humidity through the AM2301 for data acquisition NRF2401 data communications, real-time transmission of data will be collected to show the digital control Platform: |
Size: 57344 |
Author:xxl88 |
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Description: 二相相移键控（BPSK）调制解调过程的MATLAB仿真实现。ASK、FSK、PSK这三种数字调制方式在抗干扰噪声能力和信号频谱利用率等方面，以相干PSK的性能最好，目前已在中、高速传输数据时得到广泛应用。-Binary phase shift keying (BPSK) modulation and demodulation process, MATLAB Simulation. ASK, FSK, PSK modulation in the three digital noise interference and signal spectrum efficiency, etc., to the best performance of coherent PSK, is now in the middle and high-speed transmission data are widely used. Platform: |
Size: 22528 |
Author:秋田 |
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Description: 本文是阐述在嵌入式数字信号处理器（DSP）OMAP5912上实现无线网络802．11B的方法。DSP对PC机数据或者直接采样语音信号，通过无线网络传输，实现数据通信。由于系统以DSP为核心，使得无线网络的数字信号处理更加方便，可以较方便地实现数据加密、信号压缩等较复杂的算法。
-This is explained in the embedded digital signal processor (DSP) OMAP5912 802.11B wireless network to realize the method. DSP data on the PC, or directly sampled voice signal transmission over wireless networks, data communication. DSP as the core of the system to make wireless networks more convenient digital signal processing, can be more easily achieve data encryption, signal compression and other more complex algorithms. Platform: |
Size: 313344 |
Author:汪江 |
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Description: 在传输数字信号的时候，需要时钟定时，本程序可以从数据中恢复出时钟-In the transmission of digital signals, the need for clock timing, the program can recover a clock from the data Platform: |
Size: 1024 |
Author:张伟 |
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Description: For a wide range of applications such as digital mobile radio, Digital Simultaneous Voice and Data (DSVD) or speech storage, it is desirable to provide a discontinuous transmission of speech-coding parameters. Advantages can include lower average power consumption in mobile Platform: |
Size: 2045952 |
Author:hady |
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Description: 多功能数显表
本毕业设计的设计任务为一个多功能数显表。该数显表可以测量和显示气压、冲击频率和耗气量。并且具有RS232接口和时间显示。本毕业设计作品选用AK-4气压传感器和LWGY涡轮流量传感器，通过MCS-51单片机来控制操作，实现信号数据的采集、处理和发送。本毕业设计作品不仅可以将气压、冲击频率、耗气量及时间等数据显示在8个LED数码管上，还会通过RS232串口，将数据发送到PC上。并由PC上的配套程序，将信息数据显示在显示器上，这两部分所显示的数据是完全相同的。其中数字显示时间单位为秒，冲击频率的单位为BMP，耗气量的单位为立方米/小时。同时，系统会自动计时，开始运行3分钟之后，自动结束测量、显示，并保存信息数据。-Multi-function digital meter
The design of this graduation project is a multi-task digital form. The digital meter can measure and display pressure, impact frequency and air consumption. And has a RS232 interface and time display. The selection of graduate design works of AK-4 LWGY turbine flow sensors and pressure sensors, through the MCS-51 microcontroller to control the operation, and signal data collection, processing and transmission. This can not only graduated from design work to pressure, impact frequency, air consumption and time data is displayed in 8 LED digital tube, but also through the RS232 serial port, send data to the PC. By supporting programs on the PC, the information data displayed on the monitor, the data shown in these two parts are identical. One time, in seconds digital display, the impact frequency of the units BMP, air consumption of the units of cubic meters/hour. Meanwhile, the system will automatically time to start running after 3 minutes, automatically Platform: |
Size: 794624 |
Author:严二伟 |
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Description: 多媒体数据流实时传输速率研究及应用 随着多媒体及互联网技术的迅速发展，广泛应用于远程教育、视频会议等的数字视频实时传输的技术已成为计算机领域的一个研究热点。数字视频实时传输过程中数据量巨大且延迟敏感性强，因此，在实时传输中必须对视频数据进行压缩以保证低延迟。-Real-time multimedia data transfer rate of flow and application of multimedia and Internet technology with the rapid development of widely used in distance education, video conferencing, real-time transmission of digital video technology has become a hot topic in the computer field. During the transmission of digital video data in real time and delay sensitive than large, so in real-time transmission of video data must be compressed to ensure low latency. Platform: |
Size: 31744 |
Author:谭盛康 |
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Description: 主要介绍视频信息的获取，处理，编码，传输和显示等内容，本电子书籍详细讲解了运动估计，视频编码，三维视频处理，数字视频水印，对与研究视频处理的人来说是一本很好的资料。-Video information focuses on the acquisition, processing, coding, transmission and display such content, e-books explain in detail the motion estimation, video coding, three-dimensional video processing, digital video watermarking, research on video processing and for people is a very good data. Platform: |
Size: 7818240 |
Author:luzhiqiang |
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Description: 本建议书 | 国际标准是为了满足视频会议、数字存储媒体、电视广播、网络流媒体和通信等各种应用对高压
缩比运动图像压缩日益迫切的需求而制定的。同时也是为不同的网络环境中的应用设计一种灵活的编码数据表示
方式。本建议书 | 国际标准将使得运动视频能够作为一种计算机数据被处理，可以存储在各种不同的存储媒体
上，能够在当前和未来网络上传送和接收，并且在现有和将来的广播信道上分配。 -This Recommendation | International Standard is to satisfy the video conferencing, digital storage media, television broadcasting, Internet streaming and communication applications such as high compression ratio of the moving image compression increasingly urgent demands have been made. But also for different network environments to design a flexible application of coded data representation. This Recommendation | International Standard will allow moving video to be processed as a computer data can be stored in a variety of storage media, to the current and future network transmission and reception, and in the current and future broadcast channel on the distribution. Platform: |
Size: 2203648 |
Author:szfalloutadam |
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Description: 任务：用二台8086K通过8251进行双机通讯，一台作为发送，另一台作为接收，发送方读入按键值，并发送给接收方，接收方收到数数据后在数码管上显示。
要求：实现双机的串行通信，并在数码显示区域显示传输的内容，画出电路原理图、元器件布线图、实验电路图；绘制程序流程图，进行串行通信程序设计（采用汇编语言）。-Task: Using two sets of 8086K through 8251 for two-machine communication, one as the sender, the other as a receiver, the sender read key value, and sent to the receiver, the receiver receives the number of data in the digital tube display. Requirements: to achieve double the serial communication, and transmission in the digital display area displays the contents, draw the circuit diagram, component wiring diagrams, test circuit drawing program flowcharts, program design for serial communication (using assembly language) . Platform: |
Size: 5405696 |
Author:姚静如 |
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Description: 下单王在线图文下单系统系列产品应用先进的网络传输方式，是针对印前、印刷应用上的又一伟大创举！集在线喷绘系统、数码快印系统、在线印刷系统、在线输出系统、名片印刷下单系统、广告制作传输系统等六大在线下单系统于一体，每个下单系统的选项和参数都可以自由修改、显示与否，同时还拥有会员管理、财务管理、订单管理、在线留言、发货管理、公告、ＱＱ在线客服、计算器、配色表等功能。系统基于普及的宽带网络传输文件，足不出户就可获得客户传输文件及订单数据，是广告、印刷等行业的好帮手。
免人工接取、节省成本、提高效率、完善管理！-Order king of online graphic single-system products under application of advanced network transmission is another great initiative on the prepress and printing applications! Single system under the six-line set-line inkjet system, digital printing systems, printing systems, on-line output system, a single system under the business card printing, advertising production and transmission system in one of the options and parameters of each single system can be freely modified, displayed or not, also has a membership management, financial management, order management, online messages, delivery management, announcement, QQ online customer service, calculator, color tables and other features. The system is based on the popularity of broadband network to transfer files in their homes can get the client to transfer files and order data, a good helper for advertising, printing and other industries.
Free of artificial access, cost savings, increase efficiency, improve management Platform: |
Size: 546816 |
Author:廖建波 |
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Description: 数字基带传输系统在system view上的仿真最完整版本，内涵通信原理仿真实验指导以及本实验的参考资料及整个模型搭建的完整参考资料-Digital baseband simulation system. The view on the most complete version of the transmission system the connotation communication theory simulation experiments guidance, and the complete reference to the experimental reference data and the model structures
Platform: |
Size: 2080768 |
Author:lily |
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Description: 通信的数字化是它能与计算机技术和数字信号处理技术相结合的基础，而实现通信数字化的前提是信源能提供的各种用于传递的消息，例如语音、图像、数据、文字等都必须以数字化形式表示。而信源编码是数字通信系统中的重要组成部分，他是保证信号有效传输的一种重要方式。霍夫曼编码依据字符出现的概率来构造异字头的平均长度最短的码字，有时称之为最佳编码，其优越的性能被广泛使用在数字通信系统中。霍夫曼编码已经成为数据压缩的灵魂算法。本文介绍了无失真编码算法的构造，霍夫曼编码的规则和特点，同时分析了对信源进行优化的方法，最后通过MATLAB仿真来讨论比较二元霍夫曼编码、三元霍夫曼编码以及信源扩展编码的效率，来实现霍夫曼码的优化构造。-The digital communication is it can and computer technology and digital signal processing technology in combination of the base, and realize the digital communication is the premise of source can provide all kinds of used to deliver news, such as voice, video and data and text must take the digital form said. And the source coding digital communication system is the important component, he is to ensure the effective transmission signal is an important way. Huffman coding based on the probability of characters appear to construct different "the average length of the shortest code words, sometimes called the best coding, superior performance is widely used in digital communication system. Huffman coding has become the soul of data compression algorithm. This paper introduces the structure of the encoding algorithm without distortion, Huffman coding rules and characteristics, and analysis of the source of the optimization method, and finally by MATLAB simulation to discuss compares two yu Platform: |
Size: 59392 |
Author:郑华 |
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Description: RDS(Radio Data System)数据广播系统是将数字信号调制到调频波段
(87.5~108MHz)并以广播的形式发送的一种信号传输系统。这种传输模式在北美
和欧洲得到了采用，而且得到越来越多的其他国家的关注。在北美和欧洲 都有
相应的标准，即RBDS 和RDS。
传输数据时，数据加载到57KHz 的副载波频段。副载波经过调制以适应固定
的双相编码信号。这个副载波经过抑制以避免调制后的数据在锁相环立体声解码
器中产生混叠同时还要与德国同样采用57KHz 频率作为副载波的ARI 系统保持
兼容。发送的信号以组(group)为单位，每组信息包括4 块(block),每块信息包
括26 位，分别为16 位有效信息和10 位校验信息。整个系统包括32 种不同的
组，分别代表不同的信息。在发送过程中，电台根据需要发送不同的组以及不同
的组合以达到发送不同信息的目的。然而PI、PTY 和TP 信息在每组信息都有包
含。-RDS (Radio Data System) data broadcasting system is modulated digital signal to the FM band
(87.5 ~ 108MHz) and send the form of broadcasting a signal transmission system. This transfer mode in North America
And Europe have been used, but more and more the concern of other countries. In North America and Europe have
Corresponding standards, RBDS and RDS.
Transmit data when the data is loaded into the 57kHz subcarrier band. Subcarrier modulated to adapt to a fixed
Dual-phase encoded signals. The sub-carrier after suppression to avoid the modulated data in the phase-locked loop stereo decoder
Device aliasing while 57kHz frequency as the subcarrier of the ARI system remains the same with Germany
Compatible. Send a signal to the group (group), each including 4 (block), each packet
Including 26, 16 information and 10 parity information. The entire system, including 32 different
Group, representing different information. In the sending process, the radio need to send different group Platform: |
Size: 191488 |
Author:liyanya |
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Description: 系统整体设计嵌入式高清视频无线传输系统的框图如图1所示。它主要由视频编码子系统、主控子系统、CDMA通信子系统3大部分构成。视频编码子系统中,采用TI公司的超低功耗图像解码芯片TVP5150,将模拟视频信号转换成数字视频信号输入到AT2061的视频输入接口,继而由AT2061实现高清视频编码产生两路不同分辨率的压缩视频流,此外,需要为AT2061配备专用的SDRAM存储代码及视频数据。主控子系统以STM3210FK为核心,利用32位总线外扩FLASH,SDRAM-The overall system design of embedded HD video wireless transmission system block diagram shown in Figure 1. It mainly consists of the video encoding subsystem, master subsystem constitute the majority of the CDMA communication subsystem. Video coding subsystem, using TI' s ultra low-power image decoding chip the TVP5150 analog video signals into the video input digital video signal input to the AT2061, high-definition video encoder generates two different resolutions and then by AT2061 compressed video stream, in addition, the AT2061 is equipped with dedicated SDRAM memory, code and video data. Master subsystem STM3210FK core, use the 32 bus outside the expansion of the FLASH, SDRAM, Platform: |
Size: 278528 |
Author:lijiang |
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Description: 它内建Web Server和CCD图像传感器，内部增加了对模拟视频进行数字化处理的DSP 芯片，可以将数字视频信号转成符合网络传输协议的数据流，送到网上传输，远端的浏览者只要用标准的网络浏览器即可实时观看该影像。此种摄像机除了具有普通复合视频信号输出接口（BNC）外，还有网络输出接口（RJ—45），可直接将摄像机接入本地局域网。-Built-in Web Server and CCD image sensor, the increase within the DSP chip to digitize analog video, digital video signals can be converted to meet the network transport protocol data stream sent to the online transmission, remote viewers as long as standard Web browser to view the images in real time. Such cameras in addition to ordinary composite video signal output interface (BNC), the network output interface (RJ-45), directly to the camera connected to the local LAN. Platform: |
Size: 619520 |
Author:bao |
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Description: 可以实现电脑和FPGA的串口通信，传送的数据在数码管上显示-Computer and FPGA serial communication, the transmission of data on the digital display Platform: |
Size: 478208 |
Author:追风 |
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Search - digital data transmission