【正文】 , the user does not need to install any hardware device, with the browser can only watch. Embedded video Web server monitoring system and other surveillance system has the following characteristics: a parison of embedded video area is vast, have been supervised Web server monitoring system of Web server directly connected network, no cable length and attenuation, and the limit of the concept of network is no distance, pletely abandoned regional concept, expand have been supervised areas. B, the system has almost unlimited seamless expansion ability all equipment is mark, with IP address increased equipment just means that IP address the expansion. C, can form a very plicated monitoring network based on embedded Web server is the core of the monitoring system in network mode, with traditional analog monitor and based on PC platforms screening method has greatly different, because Web server output has pleted analog to digital conversion and pression, adopt uniform agreement on the network transmission, support across the router across the gateway, remote video transmission. D, stable and reliable performance, without staff management embedded Web server based on embedded puter technology, actually using embedded realtime multitasking operating system, and video pression and Web function due to focus on a small size, within the device directly concatenation LAN or wan, namely that look, system insert realtime, stability, reliability greatly improved, also need not specially assigned management, which is very suitable for unattended conditions. E, when the monitoring center needs to watch a video camera image, more network bandwidth will have certain requirements. The development of video monitoring system 1, video monitoring system development direction Video digitizing, front integration, network, system integration is monitoring the development of video monitoring system, and recognized the direction is the premise of digital network, network and system integration of video monitor based, so, the biggest two characteristics is the digital and network. 2, digital Digital is the 21st century features, is the information technology as the core, the necessity of the development of electronic technology, digital is toward growth pass, along with the time development, our environment will bee more and more digital. Video surveillance system is the system of digital first should flow in video, audio, (including from analog state control, etc.) state, which to digital pletely break classic cable TV system based on camera imaging technology as the center structure, fundamentally changing video monitoring system from information acquisition, data processing, transmission and system control of the mode and structural form. The flow of information digitization, coding pression, open video monitoring system, make agreements with the security system in other between each subsystem realize seamless connection, and the unified operation platform to realize the management and control system integration, this also is the meaning. 3 and network Video monitoring system of the structure of the network will mean system by lumped type to distribution type system transition. Distribution type system USES the multilayer hierarchical structure form and the realtime kernel technology with micro multitask, multiuser, distributed operating system to achieve beat task scheduling algorithm fast response. Distributing type monitoring system of the hardware and software using the standardization, the modularization and the serialization of design, system equipment configuration has the versatility, openness, system configuration flexible, control the perfect function, data processing convenient, friendly manmachine interface and system installation, missioning and maintenance simplify the operation of the system, are hot backup, faulttolerant reliable, etc. System in some degree of networked broke on regional and equipment have been supervised extended geographical and quantity limits. System network will make the whole network system hardware and software resources sharing and mission and load of sharing, this also is an important concept of the system integration. From the above can see video technology, the development of video, roughly experienced analog video, network video PC in three phases, and depending on the technology of the network, munication and transmission platform.外文翻譯視頻監(jiān)控系統(tǒng)是安全防范系統(tǒng)的重要組成部分，是一種防范能力較強(qiáng)的綜合系統(tǒng)。視頻監(jiān)控以其直觀、方便、信息內(nèi)容豐富而廣泛應(yīng)用于許多場合。近年來，隨著現(xiàn)代科學(xué)技術(shù)的不斷發(fā)展特別是網(wǎng)絡(luò)帶寬、計(jì)算機(jī)處理能力和存儲容量的迅速提高以及各種實(shí)用視頻信息處理技術(shù)的出現(xiàn)，視頻監(jiān)控技術(shù)也有長足的發(fā)展，視頻監(jiān)控進(jìn)入了全數(shù)字化的網(wǎng)絡(luò)時(shí)代，日益受到人們的重視和關(guān)注。視頻監(jiān)控系統(tǒng)的發(fā)展基本上是從早期的模擬閉路電視監(jiān)控系統(tǒng)向數(shù)模結(jié)合的視頻監(jiān)控系統(tǒng)和現(xiàn)在的數(shù)字視頻監(jiān)控系統(tǒng)演變的過程，而現(xiàn)在的數(shù)字視頻監(jiān)控系統(tǒng)根據(jù)技術(shù)的發(fā)展又分為三個(gè)階段：數(shù)字監(jiān)控的多媒體階段、數(shù)字監(jiān)控的DVR階段和數(shù)字監(jiān)控的網(wǎng)絡(luò)階段。 模擬視頻監(jiān)控系統(tǒng) 模擬視頻監(jiān)控系統(tǒng)分為基于微處理器的視頻切換控制加PC機(jī)的多媒體管理和基于PC機(jī)實(shí)現(xiàn)對矩陣主機(jī)的切換控制及對系統(tǒng)的多媒體管理兩種類型。模擬閉路電視監(jiān)控系統(tǒng)實(shí)際上就是許多模擬監(jiān)控設(shè)備的組合，系統(tǒng)主要由“前端設(shè)備”和“終端控制設(shè)備”以及“信號傳輸介質(zhì)”三個(gè)部分組成，其中：前端設(shè)備主要有攝像機(jī)、云臺、解碼器等，控制設(shè)備主要有切換矩陣、畫面分割器、監(jiān)視器、控制鍵盤、錄像機(jī)等。傳輸介質(zhì)包括電纜、控制線等。隨著微處理器、微機(jī)的功能、性能的增強(qiáng)和提高，多媒體技術(shù)的應(yīng)用，系統(tǒng)在功能、性能、可靠性、結(jié)構(gòu)方式等方面都發(fā)生了很大的變化，視頻監(jiān)控系統(tǒng)的構(gòu)成更加方便靈活、與其它技術(shù)系統(tǒng)的接口趨于規(guī)范，人機(jī)交互界面更為友好。但由于視頻監(jiān)控系統(tǒng)中信息流的形態(tài)沒有變，仍為模擬的視頻信號，系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu)主要是一種單功能、單向、集總方式的信息采集網(wǎng)絡(luò)，因此系統(tǒng)盡管已發(fā)展到很高的水平，已無太多潛力可挖，其局限性依然存在，要滿足更高的要求，數(shù)字化是必由之路。模擬監(jiān)控系統(tǒng)的主要缺點(diǎn)有：a、通常只適合于小范圍的區(qū)域監(jiān)控，模擬視頻信號的傳輸工具主要是同軸電纜，而同軸電纜傳輸模擬視頻信號的距離不大于1Km，雙絞線的距離更短，這就決定了模擬監(jiān)控只適合于單個(gè)大樓、小的居民區(qū)以及其它小范圍的場所。b、系統(tǒng)的擴(kuò)展能力差 對于已經(jīng)建好的系統(tǒng)，如要增加新的監(jiān)控點(diǎn)，往往是牽一發(fā)而動(dòng)全身，新的設(shè)備也很難添加到原有的系統(tǒng)之中。c、無法形成有效的報(bào)警聯(lián)動(dòng)，由于各部分獨(dú)立運(yùn)作，相互之間的控制協(xié)議很難互通，聯(lián)動(dòng)只能在有限的范圍內(nèi)進(jìn)行。 數(shù)字視頻監(jiān)控系統(tǒng) 隨著多媒體技術(shù)、視頻壓縮編碼技術(shù)、網(wǎng)絡(luò)通訊技術(shù)的發(fā)展、數(shù)字視頻監(jiān)控系統(tǒng)迅速崛起，現(xiàn)今市場上有兩種數(shù)字視頻監(jiān)控系統(tǒng)類型，一種是以數(shù)字錄像設(shè)備為核心的視頻監(jiān)控系統(tǒng)，另一種是以嵌入式視頻Web服務(wù)器為核心的視頻監(jiān)控系統(tǒng)。 數(shù)字視頻壓縮編碼技術(shù)日益成熟，計(jì)算機(jī)的普及化，為基于PC機(jī)的多媒體監(jiān)控創(chuàng)造了條件。這種新型視頻監(jiān)控系統(tǒng)的迅速崛起，部分地取代了以視頻矩陣圖像分割器、錄像機(jī)為核心，輔以其它傳送器的模擬視頻監(jiān)控模式，其優(yōu)越性主要表現(xiàn)在：a、PC機(jī)的多媒體監(jiān)控主機(jī)綜合了視頻矩陣、圖像分割器、錄像機(jī)等的眾多功能，使系統(tǒng)結(jié)構(gòu)大為簡化。b、由于采用計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)，數(shù)字多媒體遠(yuǎn)程網(wǎng)絡(luò)監(jiān)控不受距離限制。c、由于采用大容量磁盤陣列存盤器或光盤存儲器，可以節(jié)省大量的磁帶介質(zhì)，同時(shí)有利于系統(tǒng)實(shí)現(xiàn)多媒體信息查詢。 但隨著基于PC機(jī)的視頻監(jiān)控錄像系統(tǒng)的發(fā)展，在實(shí)際工程使用過程中，也暴露出一些不足，主要是系統(tǒng)工作的不穩(wěn)定性?；赑C的視頻監(jiān)控錄像系統(tǒng)的組成結(jié)構(gòu)為：兼容/工控PC機(jī)+視頻采集卡+普通/較可靠的操作平臺+應(yīng)用軟件。從系統(tǒng)的組成結(jié)構(gòu)來分析：a、PC機(jī)用于24小時(shí)不間斷工作時(shí)，其性能是不很穩(wěn)定的，工控PC機(jī)相對兼容PC機(jī)的穩(wěn)定性有一個(gè)檔次上的提高，適用于較復(fù)雜的工作環(huán)境。b、操作系統(tǒng)：以Window