數字分頻網路 的英文怎麼說

中文拼音 [shǔzìfēnbīnwǎnglù]
數字分頻網路 英文
digital dividing network
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 分 : 分Ⅰ名詞1. （成分） component 2. （職責和權利的限度） what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] （料想） judge
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 網 : Ⅰ名詞1 （捕魚捉鳥的器具） net 2 （像網的東西） thing which looks like a net 3 （像網一樣的組織或...
  • 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  • 網路 : 1. [電學] network; electric network2. （網） meshwork; system; graph （指一維復形）; mesh
  1. This thesis analyses the demand of the television station for an automatic broadcasting system. we made a systematic analysis by autoptical research and information which we have gotten by all kinds of ways. this systematic analysis is given to the working mechanism of the broadcasting system in the television station, and a new technique solution has been bring out to the automatic broadcasting system of tv station which use the new digital video technology. this thesis also analyses the designing process of the broadcasting part in video automatic broadcasting system. based on the serial port communication theory and network transmission theory, we designed a miniature system ground on mcu to realize long - distance broadcasting and controlling function. we designed a controlling software for this miniature system

    本文分析了電視臺對于自動播出系統的需求，在課題研究中，通過在電視臺實地考察和通過各種途徑搜集資料，對電視臺的播控系統工作機制進行了系統的分析，對利用最新的數字視頻技術的電視臺自動化播出系統提出了新的技術解決方案。同時本文分析了整個視頻自動播出系統的播出部分的設計過程，並在串口通訊理論，網路傳輸理論的基礎上，設計了一套基於單片機的小型系統，實現了遠程播控的功能，並為該系統設計了計算機端的控制軟體。
  2. Company now have independence develop ten many china patent and many independence intellectual property ' s software copyright ' s product ; company major product : cable television consumer management control system ( but look for address 2 - 8 branches allot style, 8 - 32 gather line style ) ; shoot frequently plus unfasten harass system ( crowd plus crowd unfasten, cent two sections, point channel shan unfasten ) ; video frequency number subsections plus unfasten harass system ; cable television network burglarproof sow system ; number cable television product is with number mmds ( microwave ) systematically ; general purpose type prevent thunder supply electric appliances, shoot frequently automate supply electric appliances, but look for address control supply electric appliances ; power supply prevents thunder protection product ; pass flow branch, dispenser, split utensil, cavernous wave utensil, power supply inserts utensil, but transfer attenuator, but transfer equalizer wait for

    目前擁有十多項中國專利和多個自主知識產權的軟體版權的產品；公司主要產品：有線電視用戶管理控制系統（可尋址2 - 8戶分支分配式、 8 - 32戶集線式） ；射頻加解擾系統（群加群解、分兩段、按頻道單解） ；視頻數字分段加解擾系統；有線電視網路防盜播系統；數字有線電視產品與數字mmds （微波）系統；通用型防雷供電器，射頻自動控制供電器，可尋址控制供電器；電源防雷保護產品；過流分支、分配器，分流器、陷波器、電源插入器，衰減器、均衡器等。
  3. Fpga and dvb standard are introduced firstly, dvb - c standard and composition of its system are analyzed completely, development of modulator structure and dvb - c digital modulator composition are presented, more over, analysis of respective modular are given. then, principle of dvb - c digital modulator system are presented, they are error control technique 、 mqam 、 nyquist rule and root raised cosine filter 、 window design method for fir filter 、 multi - rate signal processing ( integer interpolating, conversion of fractional sampling, equal conversion of net structure, polyphase structure for filter, poly - phase structure for interpolator, multi - stage implementation of samplying conversion ) 、 distrubited algorithm 、 cic filter 、 dds 、 cordic algorithm

    接著，專門利用一個章節闡述了dvb - c前端調制系統原理，他們了差錯控制技術、多進制調制（ mqam ） 、 nyquist準則與平方根升餘弦濾波器、有限沖擊響應濾波器的窗函數設計法、多抽樣率信號處理包括（整數倍內插原理、分數倍抽樣率轉換、網路結構的等效結構、濾波器的多相表示、內插器的多相表示、抽樣率轉換的多級實現） 、分散式演算法、 cic濾波器、直接數字頻率合成（ dds ） 、 cordic演算法。
  4. Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method

    在本設計中，採用高速的dsp處理器，實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法，實現了大電流信號的驅動輸出;採用485總線技術，組建了裝置主機與多探測器之間的主從式通訊網路，實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路，採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術，實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元，設計了人機信息交互的介面;採用了模塊化的軟體設計方法，開發了裝置主機及探測器的軟體程序。
  5. Usually point a kind of inside to pack the arithmetic figure cent the network with the box of the power enlarger. arithmetic figure type the power enlarger for method for signal for inputting for arithmetic figure comparing, at with arithmetic figure signal handling again and again partitioning the empress, then and respectively these signals transformation is imitating the signal, then again from eachly from of box enlarge the empress to go to again to push the the cowgirl in the box to pronounce the unit

    通常指一種內裝數字分頻網路和功率放大器的音箱。數字式音箱輸入的信號為數字比特流，在用數字信號處理的方法將音頻頻譜分割后，便分別將這些信號變換為模擬信號，然後再由各自的功率放大器放大后再去推動音箱中的相應發音單元。
  6. The advent of the internet and the wide availability ofcomputers, scanners and printers make digital data acquisition, exchange and transmission a simple task. however, making digital data accessible to others through networks also creates opportunities for malicious parties to make salable copies of copyrighted content without permission of the content owner. digital watermarking is likely to be a potential solution to this problem. digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia documents in networked environments. it makes possible to embed a watermark ( such as identification data, serials number, text or image etc. ) to multimedia documents allowing copyright protection, secret communication, document authentication and so on. in this paper, we present a new digital image watermarking method based on svd ( singular value decomposition ), and then give some theoretical analysis about the algorithm. extensive experimental results show that this method is much more robust than other methods presented before

    隨著計算機和網路技術的飛速發展，數字圖像、音頻和視頻產品愈來愈需要一種有效的版權保護方法，另外通信系統在網路環境下的信息安全問題也日益顯露出來.數字圖像水印技術為上述問題提供了一個潛在的解決方案.所謂水印技術就是將數字、序列號、文字、圖像標志等版權信息嵌入到多媒體數據中，以起到版權保護、秘密通信、數據文件的真偽鑒別和產品標志等作用.本文提出了一種新的基於奇異值分解的數字水印演算法並且對該方法的理論基礎給出分析.實驗結果表明這種方法要比目前提出的流行演算法魯棒
  7. Considering the requirement of communication network, a local area computer communication system of plc based on usb interface was given after analyzing the application model of plc. then after theoretical analysis and digital simulation, the plc modem and the computer interface models were designed. the design of software about the two models was also finished

    本文首先介紹了電力線通信技術在國內外的研究概況，分析了電力線載波通道的傳輸特性，討論了適合於電力線通信的擴頻載波通信方式，然後結合通信網路的要求，在分析電力線通信應用模式的基礎上，提出了一種基於usb介面的室內計算機電力線通信方案，進行了理論上的分析和數字模擬，設計了電力線modem模塊和計算機介面模塊，編制了相應的軟體程序，並對軟體進行了測試分析。
  8. And pays emphasis on analyzing the system structure and system flow, the core techniques, the channel characteristic and parameters of dvb - t system. the system adopts some core techniques such as cofdm, a lot of tps ( transmission parameter signalling ) insert and guard interval, and so on. so it can withstand high - level ( up to odb ), long delay static and dynamic multipath distortion

    論文首先描述了數字電視地面廣播的需求條件，技術難點和目前存在的問題，並重點分析了dvb - t系統結構流程，核心技術及系統通道特性和參數，該系統採用了cofdm （編碼正交頻分多路復用） ，大量導頻信號插入和保護間隔技術等核心技術，使之能抵抗高電平（ 0db ） ，長延時的靜態和動態多徑失真，有利於數字和模擬電視的混合傳輸，它的多載波調制模式功能和性能在移動和便攜接收、同頻網等方面具有獨特的優勢。
  9. People can get almost information through the internet. this gives rise to serious problems including wide spread copyright violation, illegal copying, easy forging etc. these problems are rooted from the intrinsic features of the digitally formatted information : ( 1 ) making copies is easy and inexpensive ; ( 2 ) each copy is exactly identical to the original ; and ( 3 ) distribution of the copies ( e. g. via network or floppy ) is easy and fast

    多媒體數據的數字化為多媒體信息的存取提供了極大的方便，同時也極大地提高了信息表達的效率和準確性，如數字信號很容易進行編輯，可以方便、便宜、無失真地被復制，數字聲音、文本、圖像和視頻易於通過電子的（網路）或物理的（ cd - rom ）系統低價高效地迅速傳輸和分配等。
  10. In the paper, chapter 1 gives a comprehensive introduction of digital image compressing including its recent status, technical standards, classification in the world. chapter 2 introduces briefly the thought and ii procedure of vector quantization, describes lgb algorithm and vector quantization based on sofm neural network. chapter 3 discusses predictable coding in lossy and lossless aspects, analyzes adaptive predictable coding based on bp neural network, introduces the evaluation of algorithm on neural network in image compression. chapter 4 discusses the applications of mathematical transformation in image compression and does experiments related, analyzes the strategies of image coding in transformed domain. in chapter 5 images are decomposed and represented by wavelet transform, then discusses the characteristics and effects of wavelet functions in image compression, analyzes the wavelet coefficients after images are decomposed ; based on the theories and analyses in the prior chapters, the paper presents an image compression scheme and gives results. the test results shows that the image compression scheme is practical and helpful to map into the local content of images to get rid off redundancy, so that, it can require satisfactory results of image compression

    方案首先利用小波多分辨分析性質，對圖像進行小波分解，對分解后各子圖的小波系數進行了統計分析，針對各子圖的小波系數特點，對不同的子圖分別採用不同的壓縮方法，低頻子圖採用基於神經網路的自適應預測編碼，高頻子圖採用基於神經網路的矢量量化編碼，從而實現對圖像數據的壓縮處理。本論文第一章介紹了數字圖像壓縮處理的國內外當前的概況以及其技術標準和分類。在第二章，介紹了數字圖像的矢量量化技術的數學思想和過程，對lbg演算法和基於sofm神經網路的矢量量化進行了闡述、分析。
  11. As the military and industry is developing dramatically, to enhance the low - contrast digital image has become one of the important areas in image processing. there are two traditional methods to enhance the low - contrast digital image : the methods based on frequency and the method based on time. the histogram enhancement, the most popular way to enhance, is representing the latter one ; while the methods based on frequency often uses wavelet transform, ft ( flourier transform ), dct ( discrete cosine transform ) to enhance

    隨著軍事和工業上的發展需要，低對比度數字圖像的增強越來越成為數字圖像處理中的一個重要領域，傳統的增強方法分為頻域法和空域法兩大類，其中空域法的代表為直方圖增強法，這也是最為流行的增強方法，頻域法中用的較多的是基於小波變換，傅立葉變換和離散餘弦變換的增強方法，本文介紹的是基於小波神經網路的頻域增強法。
  12. Finnish broadcasters at the same time are in talks with copyright organisations on future copyright fees, holding back programmes. french media group tdf ' s digita unit, which built and launched the network - which uses digital video broadcast handheld dvb - h technology - now offers network coverage for over 25 percent of the finnish population

    該服務網路是由法國媒體集團tdf旗下的數字服務部門負責建設並推向市場的，他們在其中使用了手持式數字視頻廣播技術dvb - h ，同時表示整個芬蘭人口的四分之一目前已經被此網路所覆蓋。
  13. Finnish broadcasters at the same time are in talks with copyright organisations on future copyright fees, holding back programmes. french media group tdf s digita unit, which built and launched the network - which uses digital video broadcast handheld dvb - h technology - now offers network coverage for over 25 percent of the finnish population

    該服務網路是由法國媒體集團tdf旗下的數字服務部門負責建設並推向市場的，他們在其中使用了手持式數字視頻廣播技術dvb - h ，同時表示整個芬蘭人口的四分之一目前已經被此網路所覆蓋。
  14. Digital video technonogy is the main part of the field of information industry which the country develops especially. with the rapid progress of broadband network and digital tv, the applications of video - on - demand, interactive tv and video website become more and more popular. all of these applications are facing the emerging digitalized video data in a large amount

    數字視頻技術是國家重點發展的信息產業領域的重要組成部分，隨著寬帶網路和數字電視的迅速發展，視頻點播、交互電視、視頻網站等應用需求越來越廣泛，這些應用都將共同面臨大量涌現的數字化視頻數據。
  15. With the popularization of access to broadband networks, the demand for network video services is on the great increase in recent years. video multicast, the particular network video service apt at multipoint data delivery, has been widely applied to distance learning, distributed video conference, digital video surveillance and real - time video distribution

    近年來，隨著internet寬帶網路的大規模普及和網路視頻服務需求不斷增長，視頻組播技術由於具有高效的多點數據傳送功能，在遠程教育、分佈視頻會議、數字視頻監控以及實時視頻分發等領域得以廣泛的應用。
  16. In the paper, some key techniques which are dealt with in the system implement have been discussed, such as the principle of video encoding and compressing, mpeg compressing standard, the principle of streaming media, realtime transport protocol ( rtf ), real - time transport control protocol ( rtcp ), real time streaming protocol ( rtsp ), the network architecture ; the technique of ethernet and the programming technique of realization of network communication, etc. based on the above key techniques, a simple, valid and inexpensive solution to rebuild existent traditional surveillance system is supplied in this dissertation

    本文分析了現有模擬監控系統的優缺點，重點討論了視頻編碼壓縮原理， mpeg壓縮標準，流媒體技術原理，實時傳輸協議rtp ，實時傳輸控制協議rtcp ，實時流協議rtsp ，網路體系結構，以太網技術和網路通信編程技術等系統實現過程中所涉及的關鍵技術。基於上述關鍵技術，本文提出了傳統視頻監控系統的數字化和網路化改造的一種簡單可行且成本低廉的解決方案。
  17. The task is to design a advanced digital video surveillance system for the bank, combined with several technical fields such as digital video, digital image and network of computer etc. in the design of the system, the author has completed video capture, video display, video storage, video compression, motion detection, video transmitting, video accept, and created a lan, and realized ip multicast

    基於銀行的數字視頻監控系統目的在於充分利用銀行現有資源的前提下，結合先進的數字技術、網路技術、視頻技術、圖像處理等技術設計出一款適合於銀行的純數字視頻監控系統，在區域銀行實現聯網監控，智能化監控，具有一定的先進性。
  18. The multicenter superwide view reappearance system which based on a technique of digital video composition is a complete set of innovative technological system from photographing and producing to output in partition and then to network synchronous playing and till a integral display. it applys many kinds of modem technique, such as photographing, digital video producing, multimedia, network and display, and on the commonly used platform it has realized a effect through software technique that only expensive and special equipment can achieve

    基於數字視頻合成技術的多通道超寬視景再現系統，是一種從拍攝製作到分割輸出再到網路同步播放直至一體化顯示的一整套創新的技術體系，它整合應用攝錄像技術、數字視頻製作技術、多媒體技術、網路技術、顯示技術等多種現代技術，在通用設備平臺上，利用軟體技術實現了昂貴特種設備才能實現的效果。
  19. Cobranet audio network technology is the development trend of audio transmission and switching, as the pace of the broadcast digital and networked development is stepping. cobranet audio network technology transmits and distributes real - time and uncompressed digital audio signal. compared with analog, this technology not only transmits high quality audio, but also economize cost. now many broadcasting stations, gymnasiums and meeting places start to make use of this technology to build their network systems. in order to operate and maintain these networks, network managing software aiming at application will be needed

    Cobranet音頻網路技術利用快速以太網傳輸和分配實時、非壓縮的數字音頻信號，在保證傳輸高質量的音頻信號的同時，與傳統的模擬方式傳輸音頻信號相比，大大降低了電纜布線等成本。目前很多廣播電臺、體育中心以及大型會場都開始利用該技術組建自己的音頻網路系統，而要運行和維護這個網路系統，需要開發專門基於cobranet技術的面向應用的網路管理軟體。
  20. This dissertation studies and discusses the key technologies of the cobranet audio network technology, meanwhile, analyses the possibility and advantages of adopting network to transmit high quality digital audio signal. this dissertation introduces the concept of cobranet device and audio network system, and introduces the basic theory of snmp and administration of networks, then discusses the trend of software of administration of networks

    本文對cobranet音頻網路技術進行了研究和闡述，分析了採用網路傳輸高質量的數字音頻信號的可能性以及相對于傳統模擬方式進行音頻信號傳輸的優勢，在此基礎上介紹了cobranet設備的概念以及利用交換機和cobranet設備組建成的音頻網路系統。
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