signal encrypt system 中文意思是什麼
signal encrypt system
解釋
信號加密系統-
The catv charge and control system is mainly composed of the management software 、 the header data modulator and the terminal charge and control equipment. i am responsible for design catv charge and control equipment and test system. the header data modulator is used to encrypt the control single from computer and transmit it into the appointed frequency. the terminal charge and control equipment demodulate out the control single from data modulator and transmit it to the addressing control part, where the demodulated fsk single is received and well - handled by the cpu unit, decode the unauthorized signals and deliver it to the shut point, shut point make use of capability of wideband anf characteristic of shut, then the signal of illegal customer will be turn off and vice versa, the legal customer can receive the normal signal
前端數據調制器完成對計算機輸出的控制信號加密處理，將指令碼載送到一指定頻率點。終端收費控制器解調出控制信號，送至單片機尋址控制部分。單片機尋址控制部分接收經fsk數據解調器送來的信號，送入cpu單元后，解出不授權信號，然後向關斷部分送入信號，關斷部分利用pin二極體的寬帶工作能力以及關斷特性，實現對非授權用戶或者非法用戶的信號關斷，使之不能正常收視，繳費用戶進行開通正常收視，達到控制用戶通道的管理。 -
The algorithm have the good one - way property, high sensitivity to initial values and good security due to the intrinsic characteristic of chaotic system and rijndael algorithm. the simulation experiment demonstrates the convenience and good hash performance ; 3 ) a new scheme of digital voice secure communication was proposed based on chaotic modulation without additional synchronization. the modulation sequence generated by chaotic logical mapping was used to encrypt the digital voice signal
混沌系統和rijndael演算法的固有特點使該演算法具有較好的安全性、對初值有高度的敏感性以及較好的單向性能，並且易於實現，是一種有效的單向hash函數； 3 ）研究了一種無需同步的基於混沌調制的數字語音保密通信系統的方案，利用邏輯映射產生混沌調制序列，以該序列作為密碼對數字語音進行加密處理，為了更好的隱匿信號特徵，混沌調制在小波分解的基礎上，對不同的通道使用不同的參數進行，並借鑒混沌掩蓋對信息信號進行了限幅處理，使密文完全隨機化。 -
In this article, two projects - " sqy - 15 encrypt subsystem of hospitalization insurance system " and " general image compress flatform " are combined to get a resolvent scheme to realize data encrypt and image compress based on digital signal processor ( dsp ) and application specific integrated circuits ( asic ). this article includes three key technologies in designing and realizing the data encrypt card and the image compress flatform. they are : ( 1 ) design of dsp application system ; ( 2 ) epld designing technology using vhdl language ; ( 3 ) pci interface technology
本文結合「 sqy - 15醫療保險信息系統加密子系統」和「通用圖像壓縮平臺」兩項目，提出了基於數字信號處理器（ dsp ）和可編程專用集成電路（ asic ）實現數據加密卡和圖像壓縮平臺的解決方案，重點介紹了基於dsp的數據加解密卡和圖像壓縮平臺設計與實現中的三個關鍵技術： （ 1 ） dsp應用系統設計； （ 2 ） vhdl語言設計epld技術； （ 3 ） pci介面技術。 -
The research in software radio is not more than ten years, but has made a great many fruits, but it is too little to set up an integrated theory system, and software radio includes many areas such as modern communication system ( which includes modem source / channel encoding and decoding, equalization, encrypt and decrypt and so on ), wideband antenna theory, digital signal process, microelectronics, computer and so on. this thesis mainly does research for modem in modem communication
軟體無線電經過不到10年的研究，盡管取得了很多成果，但是對于建立一套完整的理論體系來說，還遠遠不夠，況且軟體無線電涉及的領域多、面廣、發展快，如現代通信理論（含調制解調、信源通道編解碼、均衡、加密解密等） 、寬帶天線理論、數字信號處理、微電子、計算機等。 -
The paper emphasizes on the discussion of the problems in implementation of network speech communication system of pc to pc in lan and the schema of secure network speech communication. the aes algorithm, the chaotic sequence and the method of chaos modulation was adopted to encrypt the voice signal and the srp protocol was used for identity authentication, so as to strengthen security. and some pivotal problems is discussed and settled, such as the compressing, restraining of reverberation and the obliteration of voice signal dither
著重考慮了局域網環境下的pc到pc的網路語音通信系統的實現的相關問題；探討並設計了網路語音傳輸中的保密解決方案，採用aes演算法、混沌序列密碼加密方法和混沌調制方法對語音武漢理工大學碩士學位論文信號進行加密處理，選用srp協議用於身份認證，以提高網路語音通信的保密性能;並針對網路語音傳輸中的幾個關鍵問題，包括語音信號的壓縮、網路語音信號的靜音抑止和網路語音的去抖動處理等問題進行了分析。
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