coding technologies 中文意思是什麼
-
The research of base band ijf coding and modulation technologies
編碼調制技術的研究 -
The basic characteristics of the current data network are point - to - point, connectless, doing one ' s endeavor, no quality of service, etc. these characteristics do not meet the requirement of real - time services, therefore, the realization of voip need support of the some key technology. these technologies includes : speech sound coding and data compression, real - time transmission and control, mute compression and multicast, acoustic - echo cancellation and comfort noise generator, dynamic monitor and guarantee of quality of network service, as well as, the compatible of different network and different protocol with each other
但現有的數據網路的基本特性：點對點的、無連接的、盡力而為的、沒有服務質量保證等特性並不適合與實時的業務要求，因此voip的實現需要一些關鍵技術的支持，這些技術包括：語音編碼和壓縮技術、實時傳輸和控制技術、組播技術、靜音壓縮和舒適噪聲生成技術、回聲消除技術、網路服務質量的動態監測和保證技術、以及不同的網路、不同的協議之間的互連互通等等。 -
According to the project of adaptive multi - rate speech coding ( amr ) being put forward by the third generation group of the mobile communication, this paper takes the principle of the speech arithmetic as the base, studies the technologies including the source controlled rate, voice activity detector, comfort noise and the error concealment unit in amr, discusses its the characteristic of adaptation and analyses its performances particularly. amr c codes are researched carefully through the modules being divided into and debugged under the tms320c54x provided by the ti corporation, and optimized in selecting the method of c code embedded assembler codes and simplified in the search codebook combining with the theory of speech coding, which are based on the realization about theory and practice of the optimization of amr speech coding
從自適應多碼率語音編碼演算法的c代碼出發，對它進行模塊劃分後作了系統分析，將其在vc下調試通過，進一步在ti公司提供的tms320c54x環境中進行調試，結合語音編碼理論，對演算法進行優化，採用了在c代碼中嵌入匯編和簡化自適應碼本和固定碼本搜索的方法，部分地提高了c代碼效率，為實現自適應多碼率語音編碼的優化奠定了理論和實踐基礎。 -
Scalable video coding ( such as mpeg - 4 fgs and jvt svc ) and streaming is one of the most promising technologies. in this thesis, we investigate the key problem of scalable video coding and streaming : rate - distortion analysis and approximation, with which we also design some simple and effective smooth quality reconstruction algorithms of video streaming
本文主要的內容和創新點包括:由於廣義高斯分佈ggd （ generalizedgaussiandistribution ）的高度靈活性，理論上和實際中它都可以非常好地描述離散餘弦變換（ dct ）和小波變換（ wavelettransform ）的編碼系數（ transformcoefficients ） 。 -
2. applying manchester coding theory to meet the end of collision detection and codes judgment effectively. 3. using pulse position modulation ( ppm ) coding theory that is invented especially for optical communication in the air to ameliorate the system ' s performance by improving the system ' s character of pe. 4. taking good advantages of the fledged lan communication protocols and technologies to achieve a new method that has a high rate of capability to cost in building a wireless lan
論文研究中主要的創新性工作如下： 1 、提出利用光散射通信技術組建無線局域網，方便地實現了廉價而高速的局域網內微機的光互連； 2 、採用曼徹斯特編碼技術解決了光無線通信中代碼判決和碰撞檢測的技術難題； 3 、針對空氣通道的特點，利用ppm編碼技術降低通道誤碼率、改善系統性能； 4 、在光無線局域網中利用現有的成熟有線局域網協議和技術，從而保證了系統的實用性及改善了系統的性價比。 -
E - commerce technologies such as article numbering, bar coding edi
貨品編碼條碼編碼及電子數據聯通等電子貿易技術 -
It is accounted to the important signal technology in the ngn. sip is an application - layer control ( signaling ) protocol proposed by ietf for creating, modify and terminating session. the structure of the voip system and the relative technologies including audio coding / decoding and signal control technologies are discussed in this article
現有的ip電話信令控制協議h . 323協議由於自身的限制無法很好的滿足這種新要求，而sip協議以其所具有的結構簡潔、易於擴展和適于internet接入等良好的特性使它可以有效的控制媒體網關，控制pc呼叫，從而使其在ngn的控制協議中具有重要的地位。 -
With the widely applied of web technology in catering, the information management system of restaurant based on internet is developing fast 。 based on the local area network, this subject researches and completes the foregrounding of restaurant achieved on the electronic business platform by using java and network database technologies 。 by combining all of these, this paper researches the foregrounding of restaurant, and brings forward the scheme of completing system based on b / s mode 。 all research and work including the process of development of enterprise information nowadays ; the research on net application of java ; the design of developing platform ; the research and design of system frame and function ; the research and realization of the database design ; the design and realization of the room information 、 client information 、 sell information and the adding menu of the management system of manager 。 among these i mainly research the following key technologies : the design of data flow diagram and entity - relationship diagram ; the modeling of virtual floor using java applet and java gui ; the linking realization between jsp and sql sever 2000 ; the design of room - query 、 reserving - room and the judgment of reserving again ; the design of coding and ordering fishes list ; the design of checking - out of the system ; the design of the cancel of the order 、 statistics of the consumption and the inputting of data of the manager 。 this system completes the restaurant booking - room 、 ordering - dishes 、 checking - out and helping based on local area network, and completes the information query and adding data of the manager 。 at last, by testing, the system shows that the system is feasible and the good effect expected can be acquired, and it greatly enhances the restaurant information 。
主要研究工作包括:國內外企業信息化的發展歷程; java的網路應用研究;系統的開發平臺設計;系統體系結構和功能模塊的設計;數據庫設計的研究和實現;管理員管理系統的包間信息、客戶信息、銷售信息和菜譜添加的設計與實現。其中重點實現了如下關鍵技術:數據流圖和e - r圖設計; javaapplet和javagui相結合的虛擬樓層建模; jsp網頁與sqlsever2000數據庫的連接實現;訂包間系統的包間查詢、訂包間和重復訂包間判斷設計;點菜系統的編碼設計和點菜單設計;結賬系統的賬單計算;管理員管理系統的訂單取消、消費統計和數據輸入等設計。本課題研製的餐館前臺信息管理系統實現了餐館的局域網前臺訂包間、點菜、結賬和幫助功能;同時實現了管理員管理系統的信息查詢和添加數據等功能。 -
It ' s reviewed for the coefficient classification of existing wavelet image encoding technologies. wavelet coefficient is clustered with gray structuring elements dilation and outputted in the form of fractional bit plane according to the different significance. zero tree structure is used to employ cross - subband dependency to promote the coding effort
在對現有的小波編碼器對系數的分類方法的分析下，通過灰度結構元的形態學膨脹運算對小波系數進行更細的聚類分析，按照重要性的不同以分數比特平面的形式輸出系數，通過零樹結構開發帶間相關性。 -
First, in chapter 2 block - based stereo video coding technologies are researched. based on the analyzing of the constraints of disparity distribution and corrections among disparity vectors as well as corrections between motion vectors and disparity vectors, fast algorithms for disparity estimation are proposed. experimental results show the proposed algorithms are efficient
首先在第二章研究了基於塊的立體視頻編碼技術，重點分析了立體視頻中視差的特點及其分佈特性，研究了視差矢量和運動矢量之間的相關性，在此基礎上給出了視差估計的快速演算法，進行了實驗測試，實驗結果顯示快速演算法有很強的實用性，這是本文的一個創新點。 -
Some critical coding and modulation techniques in uav communication have been discussed in this thesis, including differential phase keying ( dpsk ), modulation multiple symbol detection ( msd ), adaptive trellis coded modulation ( atcm ), and space - time coding. this work was supported by the national defense 973 project. uav communication has many sophisticated technologies
本論文在國防973項目「無人機信息傳輸理論與方法研究」的資助下，結合現代數字通信領域的新技術，根據無人機通信的特點和需求，對其中的幾項關鍵技術做了深入研究。 -
The compression coding technologies and comparison of mpeg standards
的視頻壓縮編碼技術及其比較 -
After the historical background of video compression technology being introduced, some key compression algorithms are then proposed. then, kinds of error control technologies such as resilient coding, error concealment, and feedback - based error control methods are introduced. also our settle method is given
首先，本文視頻壓縮技術的發展歷程，介紹了一些關鍵的視頻壓縮技術；然後重點介紹了各種錯誤控制技術，包括基於編碼端的，解碼端的以及基於反饋的錯誤控制技術，並且提出了自己的一些方法；然後介紹了一個基於手持設備的視頻系統，並給出了採用的錯誤控制方法，做了數據模擬和分析。 -
Drm is a technology aims to improve sound quality of am transmission below 30 mhz and to reduce interference common in medium wave environment. new compression technologies known as mpeg4 advanced audio coding ( aac ) and spectral band replication ( sbr ) are employed to offer sound quality comparable to that of fm transmission
它是針對30mhz以下的調幅（ am ）廣播而設計，大大提高了音質，並改善了中波廣播較易受干擾的情況；系統採用最新的壓縮技術mpeg4advancedaudiocoding （ aac ）和spectralbandreplication （ sbr ） ，音質足可與fm廣播媲美。 -
Drm is a technology aims to improve sound quality of am transmission below 30 mhz and to reduce interference common in medium wave environment. new compression technologies known as mpeg4 advanced audio coding and spectral band replication are employed to offer sound quality comparable to that of fm transmission
它是針對30mhz以下的調幅am廣播而設計，大大提高了音質，並改善了中波廣播較易受干擾的情況系統採用最新的壓縮技術mpeg4 advanced audio coding aac和spectral band replication sbr ，音質足可與fm廣播媲美。 -
Vorbis coding algorithm can provide high quality audio compression with advanced perceptual coding and transform coding technologies ; and because of its completely open and non - patent, vobis has attracted more and more attentions by music industrial and audio users
Vorbis編解碼演算法利用先進的感知編碼和變換編碼等技術提供高質量的音樂壓縮，同時因為其完全開源和無專利版權費用的特點而逐漸受到音樂工業和用戶的重視。 -
To meet the needs of the third mobile communication system for higher speech quality and greater system capacity, the cdma systems employ variable rate speech coding technologies, which select the encode rate dynamically according to the signal energy and background noise. this method insures the speech quality as well as reduces, the average encode rate, so the system capacity is increased
為了滿足第三代移動通信系統對高質量語音和大容量系統的需要，在cdma系統中普遍採用了變速率語音編碼技術，根據話音的信號能量和背景噪聲動態地決定編碼速率，這種方法既保證了話音的質量，又降低了平均編碼速率，從而增加了系統容量。 -
Low - density parity - check codes come to be one of the best coding technologies because of their low - complicity iterative decoding algorithm and capacity approaching performance, and they attract more and more researchers " eyes in recent years
低密度校驗碼以其低復雜度的迭代譯碼演算法和可逼近通道容量限而成為目前最佳的編碼技術之一，越來越受到眾多編碼研究學者的關注。 -
Digital high definition television ( hdtv ) utilizes several most advanced practical technologies in the world, such as advanced compression coding technologies and audio & video technologies
數字化高清晰度電視（ hdtv ： uighdefinitiontelevision ）是先進的壓縮編碼技術和音視頻技術的結合，是第三代電視的標志，具有劃時代的意義。 -
Digital high definition television ( hdtv ) utilizes several most advanced practical technologies in the world, such as advanced compression coding technologies and audio & video technologies. it is representative of the third generation television, and will have an important influence on the lives of people in the future
數字高清晰度電視（ digitalhdtv ）作為第三代電視標準，已成為當今世界高技術競爭的焦點，對世界的政治、經濟和文化將產生巨大而深遠的影響。
分享友人