數據傳輸差錯 的英文怎麼說
中文拼音 [shǔjùzhuànshūchācuò]
數據傳輸差錯
英文
data transmission error- 數 : 數副詞(屢次) frequently; repeatedly
- 據 : 據Ⅰ動詞1 (占據) occupy; seize 2 (憑借; 依靠) rely on; depend on Ⅱ介詞(按照; 依據) according...
- 傳 : 傳名詞1 (解釋經文的著作) commentaries on classics 2 (傳記) biography 3 (敘述歷史故事的作品)...
- 輸 : Ⅰ動詞1 (運輸; 運送) transport; convey 2 [書面語] (捐獻) contribute money; donate 3 (失敗) l...
- 差 : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
- 錯 : Ⅰ形容詞1 (錯誤; 不正確) wrong; mistaken; erroneous 2 (用於否定: 壞; 差) bad; poor 3 (交叉; ...
- 數據 : data; record; information
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However, video communication can tolerate some kind of data error or loss and different parts of video bitstream have unequal error sensitivities. so we need new error control methods designed especially for video communicaton
同時視頻數據能夠容忍一定的誤碼和丟失,並不需要絕對的無差錯傳輸,而且視頻數據流的不同部分對錯誤的敏感度也不同,因此有必要也有可能根據視頻通信的特點研究新的差錯控制方法。We analyse the causes of data error during data transmission, compare several error - controlling codes with each other, and point out error - controlling developing trend
摘要分析了數據傳輸差錯產生的原因,比較了幾種差錯控制編碼,最後指出了差錯控制未來的研究方向。Secondly, this paper analyses data - delivering method, data - transmitting format and fault - control technology, studies and picks out direct sequence spread spectrum, accessing point network topology and the ieee802. 11b network rule, on the basis of which the harbor wireless communication system model is established. each composing part of the system ' s model is given out. the choice of hardware equipments and the design of communication software are expounded
其次,本文對通信技術中的數據傳送方式、數據傳輸形式和差錯控制技術進行了分析,研究了港口無線通信系統中的傳輸方式、拓撲結構和網路標準等關鍵技術,選取直序擴頻傳輸方式、接入型拓撲結構和ieee802 . 11b網路標準作為港口無線通信系統的技術基礎,建立了港口無線通信系統模型,闡述了該模型的實現方法,包括硬體設備選擇和通信軟體設計。Loss of information during transmission of compressed video over error prone networks may lead to objectionable visual distortion in the decoded video, and such distortion can propagate to many frames because of the motion compensated prediction and the variable - length coding used
採用運動補償預測及可變長編碼的壓縮視頻數據,在極易發生干擾的網路環境中傳輸時,通道傳輸差錯對壓縮編碼圖像質量影響很大,有時甚至會導致整個視頻通信完全失效。In communication systems, there are mainly two methods for controlling transmission errors, one of which is forward - error - correction ( fec ) and the other is automatic - repeat - request ( arq )
數據傳輸系統中有兩種技術被用來控制傳輸錯誤:即前向差錯控制技術( fec )和自動要求重傳技術( arq ) 。Since this decoder has high error - correcting speed and regular structure, it may apply to data transmission and storage to decrease error rate
由於該譯碼器有較高的糾錯速率和規則的設計結構,使它可以方便地用於數據傳輸和存儲過程中進行差錯控制。In this thesis, the principle of polarized light wave transmit in optical fiber is researched, i. e. principle of ternary optical fiber communication is researched. based on the researches, the construction of ternary codes optical end machine and 3b2t optical end machine used in two - state fiber net are designed. the construction and component of circuits in 3b2t optical ( called sign converter circuit - scc ) are designed particularly, including : the clock synchronization module, the data synchronizing, code converting module, frame managing module and error exam and managing module
本文研究了線偏光波動理論以及在光纖中的傳輸原理,研究了三值光通信系統原理和器件原理;在此基礎上,設計了三值光端機和在現有兩值光纖網中實現三值光通信的3b2t三值光端機的組成結構,詳細設計了3b2t三值光端機的電路組成部分(稱為電信號變換電路scc ) ,包括:時鐘同步模塊、數據同步模塊、碼元變換模塊、幀處理模塊及差錯檢測和處理模塊;而且在三值光纖通信基礎上,提出了四值光通信的原理和偏分復用的實用化方法。Arq ( auto repeat on request ) is used in data communication to garauntee error - free transmission, but it is not suitable for video communication because video communication has stringent delay requirement and limitless retransmission is not allowed
傳統的數據通信通過出錯重傳的方法保證數據的無差錯傳輸,但是這種方法不適合實時視頻通信。因為視頻通信對延遲有嚴格的要求,不可能使用無限制的重傳。As to the error control and data correction, the parity check and hamming code check solutions are provided also to guarantee the reliability of data transmission and improve the anti - jamming capability of the system
在差錯控制和數據糾錯方式上,也提供了奇偶校驗和漢明碼校驗的解決辦法,以保證數據傳輸的可靠性,提高系統的抗干擾能力。The main research contents are as follovvs : after the analyzing of the process of making train diagram, according with its character, and take into account the trend of innovation, chooses the total solution based on the b / s architecture, 3 - tier operation distributed and 2 - tier data distributed to separate the data from operation and simplify the development and maintenance ; the e - r data model that is accord with the 3nf criterion is designed after analyzing the data structure of the train diagram system. emphasis on the permission security of the distributed system, take the view schema, coupled with the login authentication and permissions validation, to ensure the data accessing domination, and take the synchronization, error control, and restore capability to advance the data security ; on the basis of b / s solution architecture, after comparing the existing transportation technologies, b - isdn and adsl is selected as the major solution architecture based on the package - svvitched networks. furthermore, error control, firewall, and encryption techniques are introduced to prevent the hacker attack and ensure the networks safety
論文的主要研究內容包括:對目前我國列車運行圖管理體制和編制流程進行詳細分析,根據其「幾上幾下」的特點,並結合未來「網運分離」體制改革的變化預測,選擇採用與之相適應的基於b s體系架構、三層業務分佈、二層數據分佈的整體方案,實現業務與數據的分離,降低開發與應用過程的復雜度和總體成本;對列車運行圖系統的數據信息進行分析,設計符合3nf規范的數據e - r關系模型,並著重研究處于分散式系統中的列車運行圖數據信息的訪問權限和數據安全問題,提出以視圖模式結合用戶識別權限審定實現數據權限劃分,以並發處理、容錯技術、恢復技術提高系統的數據安全性;在基於b s架構的系統整體方案基礎上,對當前多種數據傳輸技術進行分析比較,採用b - isdn為主幹網、 adsl為接入端的基於公用數據網路分組交換技術的系統網路體系結構,並針對網路自身安全性和黑客攻擊與侵入問題,詳細討論綜合採用差錯控制、防火墻、數據加密解密等技術手段提高系統的網路安全性能。The error - control system can increase the transmission reliability of communication system, and reduce the emission power and the capacity of the communication apparatus, so it is extensively applied in digital transmission system, for example, satellite communication system, mobile communication system, data storage and so on. coding gain is an important index for the error control system
差錯控制系統對于提高通信系統的傳輸可靠性,降低通信設備的發射功率和減小體積具有重要意義,因此廣泛應用於數傳系統,如衛星通信系統、移動通信系統、數據存儲等方面,而對於一個差錯控制系統的衡量指標就是編碼增益。This thesis discusses detailedly the flow process of ip multicast, error discovery method and error recovery method, and also proposes a new error control method to implement reliable multicast in computer supported cooperative design system : serial integrates with timer are used to discover error, arq mechanism based on nak feedback is modified to correct error, " sliding window " mechanism is imported to make up the drawbacks of traditional nak, and " slotting and damping " technique is used to resolve the question of " feedback implosion " which results from multicast reliability control
詳細研究了ip多播傳輸的流程、數據傳輸的差錯檢測方法及差錯恢復方法,提出在協同設計系統中實現可靠多播的控制方法:利用序列號和計時器相結合的方法進行傳輸數據的差錯檢測,改進了基於nak反饋信息的arq重傳機制來實現差錯恢復,並引入了滑動窗口機制來解決傳統nak方法的不足,採用「時間分槽?抑制」技術來解決由於進行多播可靠控制而產生的「反饋內陷」問題。It does n ' t require pre - analysis and multi - pass coding, and can achieve a constant video quality. thirdly, in video communication system, transmission errors and packet losses are inevitable due to channels noise and network congestion
最後,在視頻通信系統中,由於傳輸通道中噪聲或網路中擁塞影響,傳輸差錯和數據包丟失是不可避免的。In contrast with data communications, which are not usually subject to strict delay constraints and can therefore be handled using network protocols that uses retransmission to ensure error - free delivery, real - time video is delay sensitive and cannot easily make use of retransmission
與普通的數據傳輸不同,視頻通信受嚴格的延時限制,不能通過重傳機制保證無差錯的傳輸。預測和可變長編碼的使用也使得碼流對誤碼或數據包丟失更加敏感。分享友人