硬盤(pan)錄像機(ji)：嵌(qian)入式(shi)硬盤(pan)錄像機(ji)是計算機(ji)技(ji)術(shu)(shu)(shu)、網絡技(ji)術(shu)(shu)(shu)、數字視頻(pin)技(ji)術(shu)(shu)(shu)和傳統(tong)視頻(pin)、安防(fang)技(ji)術(shu)(shu)(shu)相(xiang)結合的高科(ke)技(ji)產品，具(ju)有極高的技(ji)術(shu)(shu)(shu)含量，是DVD、磁帶式(shi)錄像機(ji)的換代產品，可應(ying)用于電力遠(yuan)程監控(kong)、銀行保安監控(kong)、樓宇智能化(hua)、家(jia)庭防(fang)盜監控(kong)等領(ling)域(yu)，具(ju)有廣闊的市場(chang)前景。
硬盤錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)基本功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)是(shi)將模(mo)擬的(de)(de)(de)(de)(de)(de)(de)音(yin)視(shi)(shi)頻信號轉變為(wei)(wei)MPEG數字信號存(cun)(cun)儲在硬盤（HDD）上(shang)，并提(ti)供與錄制(zhi)、播放(fang)和(he)(he)管理(li)節(jie)目相對(dui)應(ying)的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)。相對(dui)于(yu)(yu)(yu)(yu)傳(chuan)(chuan)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)模(mo)擬視(shi)(shi)頻錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)，采(cai)(cai)用(yong)(yong)硬盤錄像(xiang)(xiang)(xiang)，故常(chang)常(chang)被(bei)稱(cheng)為(wei)(wei)硬盤錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)，也(ye)被(bei)稱(cheng)為(wei)(wei)DVR。它(ta)(ta)是(shi)一(yi)套進(jin)(jin)行(xing)圖(tu)像(xiang)(xiang)(xiang)存(cun)(cun)儲處理(li)的(de)(de)(de)(de)(de)(de)(de)計算機(ji)(ji)(ji)(ji)系(xi)(xi)(xi)統(tong)(tong)(tong)，具有(you)(you)(you)對(dui)圖(tu)像(xiang)(xiang)(xiang)/語音(yin)進(jin)(jin)行(xing)長(chang)時(shi)(shi)(shi)間錄像(xiang)(xiang)(xiang)、錄音(yin)、遠(yuan)程監視(shi)(shi)和(he)(he)控(kong)(kong)(kong)制(zhi)的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)，DVR集合(he)了(le)(le)錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)、畫面(mian)分割器(qi)、云臺鏡頭控(kong)(kong)(kong)制(zhi)、報(bao)警(jing)控(kong)(kong)(kong)制(zhi)、網(wang)(wang)絡(luo)傳(chuan)(chuan)輸(shu)等五種(zhong)(zhong)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)于(yu)(yu)(yu)(yu)一(yi)身，用(yong)(yong)一(yi)臺設備就(jiu)能(neng)(neng)(neng)(neng)(neng)(neng)取代模(mo)擬監控(kong)(kong)(kong)系(xi)(xi)(xi)統(tong)(tong)(tong)一(yi)大堆設備的(de)(de)(de)(de)(de)(de)(de)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)，而且在價(jia)格上(shang)也(ye)逐漸(jian)占有(you)(you)(you)優勢。DVR采(cai)(cai)用(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)是(shi)數字記(ji)錄技(ji)術(shu)，在圖(tu)像(xiang)(xiang)(xiang)處理(li)、圖(tu)像(xiang)(xiang)(xiang)儲存(cun)(cun)、檢索(suo)、備份(fen)、以及(ji)網(wang)(wang)絡(luo)傳(chuan)(chuan)遞、遠(yuan)程控(kong)(kong)(kong)制(zhi)等方(fang)面(mian)也(ye)遠(yuan)遠(yuan)優于(yu)(yu)(yu)(yu)模(mo)擬監控(kong)(kong)(kong)設備，DVR代表(biao)了(le)(le)監控(kong)(kong)(kong)系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)發展方(fang)向，是(shi)目前市(shi)面(mian)上(shang)監控(kong)(kong)(kong)系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)首選產(chan)品。總的(de)(de)(de)(de)(de)(de)(de)來說，按系(xi)(xi)(xi)統(tong)(tong)(tong)結構可以分為(wei)(wei)兩(liang)大類(lei)：基于(yu)(yu)(yu)(yu)PC架構的(de)(de)(de)(de)(de)(de)(de)PC式(shi)(shi)(shi)(shi)(shi)DVR和(he)(he)脫離PC架構的(de)(de)(de)(de)(de)(de)(de)嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)DVR。PC式(shi)(shi)(shi)(shi)(shi)硬盤錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)（DVR）：這(zhe)種(zhong)(zhong)架構的(de)(de)(de)(de)(de)(de)(de)DVR以傳(chuan)(chuan)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)PC機(ji)(ji)(ji)(ji)為(wei)(wei)基本硬件(jian)(jian)(jian)，以Win98、Win2000、WinXP、Vista、Linux為(wei)(wei)基本軟(ruan)(ruan)件(jian)(jian)(jian)，配(pei)備圖(tu)像(xiang)(xiang)(xiang)采(cai)(cai)集或圖(tu)像(xiang)(xiang)(xiang)采(cai)(cai)集壓(ya)(ya)縮卡(ka)(ka)(ka)，編制(zhi)軟(ruan)(ruan)件(jian)(jian)(jian)成為(wei)(wei)一(yi)套完整(zheng)的(de)(de)(de)(de)(de)(de)(de)系(xi)(xi)(xi)統(tong)(tong)(tong)。PCDVR各種(zhong)(zhong)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)的(de)(de)(de)(de)(de)(de)(de)實現都依靠(kao)各種(zhong)(zhong)板卡(ka)(ka)(ka)來完成，比如(ru)視(shi)(shi)音(yin)頻壓(ya)(ya)縮卡(ka)(ka)(ka)、網(wang)(wang)卡(ka)(ka)(ka)、聲卡(ka)(ka)(ka)、顯卡(ka)(ka)(ka)等，這(zhe)種(zhong)(zhong)插卡(ka)(ka)(ka)式(shi)(shi)(shi)(shi)(shi)的(de)(de)(de)(de)(de)(de)(de)系(xi)(xi)(xi)統(tong)(tong)(tong)在系(xi)(xi)(xi)統(tong)(tong)(tong)裝配(pei)、維修、運輸(shu)中很容易出現不可靠(kao)的(de)(de)(de)(de)(de)(de)(de)問題，不能(neng)(neng)(neng)(neng)(neng)(neng)用(yong)(yong)于(yu)(yu)(yu)(yu)工(gong)業控(kong)(kong)(kong)制(zhi)領域，只適(shi)合(he)于(yu)(yu)(yu)(yu)對(dui)可靠(kao)性要(yao)求(qiu)不高的(de)(de)(de)(de)(de)(de)(de)商(shang)用(yong)(yong)辦公(gong)環境。 嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)硬盤錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)（EM-DVR）：嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)系(xi)(xi)(xi)統(tong)(tong)(tong)一(yi)般(ban)指(zhi)非PC系(xi)(xi)(xi)統(tong)(tong)(tong)，有(you)(you)(you)計算機(ji)(ji)(ji)(ji)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)但又不稱(cheng)為(wei)(wei)計算機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)設備或器(qi)材。它(ta)(ta)是(shi)以應(ying)用(yong)(yong)為(wei)(wei)中心，軟(ruan)(ruan)硬件(jian)(jian)(jian)可裁減的(de)(de)(de)(de)(de)(de)(de)，對(dui)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、可靠(kao)性、成本、體(ti)積(ji)、功(gong)(gong)(gong)耗等嚴格要(yao)求(qiu)的(de)(de)(de)(de)(de)(de)(de)微型專用(yong)(yong)計算機(ji)(ji)(ji)(ji)系(xi)(xi)(xi)統(tong)(tong)(tong)。簡單(dan)地說，嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)系(xi)(xi)(xi)統(tong)(tong)(tong)集系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)應(ying)用(yong)(yong)軟(ruan)(ruan)件(jian)(jian)(jian)與硬件(jian)(jian)(jian)融(rong)于(yu)(yu)(yu)(yu)一(yi)體(ti)，類(lei)似于(yu)(yu)(yu)(yu)PC中BIOS的(de)(de)(de)(de)(de)(de)(de)工(gong)作(zuo)(zuo)方(fang)式(shi)(shi)(shi)(shi)(shi)，具有(you)(you)(you)軟(ruan)(ruan)件(jian)(jian)(jian)代碼小、高度(du)(du)自動化(hua)、響應(ying)速度(du)(du)快(kuai)等特點，特別適(shi)合(he)于(yu)(yu)(yu)(yu)要(yao)求(qiu)實時(shi)(shi)(shi)和(he)(he)多任務的(de)(de)(de)(de)(de)(de)(de)應(ying)用(yong)(yong)。嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)DVR就(jiu)是(shi)基于(yu)(yu)(yu)(yu)嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)處理(li)器(qi)和(he)(he)嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)實時(shi)(shi)(shi)操(cao)作(zuo)(zuo)系(xi)(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)系(xi)(xi)(xi)統(tong)(tong)(tong)，它(ta)(ta)采(cai)(cai)用(yong)(yong)專用(yong)(yong)芯(xin)片對(dui)圖(tu)像(xiang)(xiang)(xiang)進(jin)(jin)行(xing)壓(ya)(ya)縮及(ji)解壓(ya)(ya)回放(fang)，嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)操(cao)作(zuo)(zuo)系(xi)(xi)(xi)統(tong)(tong)(tong)主要(yao)是(shi)完成整(zheng)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)控(kong)(kong)(kong)制(zhi)及(ji)管理(li)。此類(lei)產(chan)品沒有(you)(you)(you)PCDVR那么(me)多的(de)(de)(de)(de)(de)(de)(de)模(mo)塊(kuai)和(he)(he)多余的(de)(de)(de)(de)(de)(de)(de)軟(ruan)(ruan)件(jian)(jian)(jian)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)，在設計制(zhi)造時(shi)(shi)(shi)對(dui)軟(ruan)(ruan)、硬件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)穩(wen)定(ding)性進(jin)(jin)行(xing)了(le)(le)針對(dui)性的(de)(de)(de)(de)(de)(de)(de)規劃(hua)，因(yin)此此類(lei)產(chan)品品質穩(wen)定(ding)，不會有(you)(you)(you)死機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)問題產(chan)生，而且在視(shi)(shi)音(yin)頻壓(ya)(ya)縮碼流的(de)(de)(de)(de)(de)(de)(de)儲存(cun)(cun)速度(du)(du)、分辨率及(ji)畫質上(shang)都有(you)(you)(you)較大的(de)(de)(de)(de)(de)(de)(de)改善，就(jiu)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)來說絲毫不比PCDVR遜色。嵌(qian)(qian)(qian)入(ru)式(shi)(shi)(shi)(shi)(shi)DVR系(xi)(xi)(xi)統(tong)(tong)(tong)建(jian)立(li)在一(yi)體(ti)化(hua)的(de)(de)(de)(de)(de)(de)(de)硬件(jian)(jian)(jian)結構上(shang)，整(zheng)個視(shi)(shi)音(yin)頻的(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)縮、顯示、網(wang)(wang)絡(luo)等功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)全(quan)部(bu)可以通過一(yi)塊(kuai)單(dan)板來實現，大大提(ti)高了(le)(le)整(zheng)個系(xi)(xi)(xi)統(tong)(tong)(tong)硬件(jian)(jian)(jian)的(de)(de)(de)(de)(de)(de)(de)可靠(kao)性和(he)(he)穩(wen)定(ding)性。硬盤錄像(xiang)(xiang)(xiang)機(ji)(ji)(ji)(ji)的(de)(de)(de)(de)(de)(de)(de)主要(yao)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)包括：監視(shi)(shi)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、錄像(xiang)(xiang)(xiang)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、回放(fang)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、報(bao)警(jing)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、控(kong)(kong)(kong)制(zhi)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、網(wang)(wang)絡(luo)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)、密碼授權功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)和(he)(he)工(gong)作(zuo)(zuo)時(shi)(shi)(shi)間表(biao)功(gong)(gong)(gong)能(neng)(neng)(neng)(neng)(neng)(neng)等。
|
