1. lub koob yees duab tsev qauv
Yees tsev network saib hom ntawm lub network yuav raug muab faib ua tes hauj lwm cheeb tsam zos, cov cheeb tsam tsam tes hauj lwm, tes hauj lwm cheeb tsam dav peb; kab ntawv hom yuav muab faib ua ob tug loj pawg wired thiab wireless. Hais MPEG-4/H.264 CIF duab compression hom xav xwb li 200 K bandwidth after kis real-time, video. Cov neeg nyob hauv kev xaiv tus IP koob yees duab raws li koj xav tau cov koob yees duab tau pes tsawg tus simultaneous tej thaj chaw deb xyuas, video, integrated xam network raws bandwidth. Hauv lub LAN, yeej yuav tsis xam bandwidth sib, koj tsuas tau rau switching throughput, xaiv tus tes hloov qhov backplane bandwidth yuav tsis txaus. Tsam chaw network, ntiaj teb no npog qhov muag xws li telecommunications, telecommunications tuam tsev tsaws txaus bandwidth kab. Teeb meem biggest ntws los bandwidth rau cov teeb meem Wan, Suav teb tam sim no yuav muab ADSL bandwidth ntws los yog tam sim no tsuas 512K, thiaj them yog ib tug hauv cov neeg siv yuav tsum noj rau hauv koj tus account.
Ntsis: xaiv ib hom network raws li ib puag ncig daim ntawv thov.
2. lub koob yees duab HD nyob nrog
Yuav tau cov kev pab cuam, hla mus rau tus thawj Harbor lab HD, tiam sis nws xav kom koj khiav lawv qab kawg thiab lub siab Harbor sim ntawd tus software txhawb lub chaw tsim tshuaj paus loj. Tau ib co manufacturers blindly HD pixels, ntuav txhob txwm tshaj tawm andquot; highandquot; andquot; codeandquot siab; rau andquot; scareandquot; rov qab neeg. Uas coj ncaj qha rau cov lag hauv lub lag luam continuingly siab txhais tiag lub dag lub zog ntawm tus manufacturers yuav nrhiav tsis tau tau, tau txais kev pab hauv lub purchase ntawm siab txhais khoom tseg.
3. caution tej nuj nqi ruaj
Peb donand #39; t haib haib tsis tus ntawm cov koob yees duab, cia saib webcams indicators as ntau tseem ceeb thiab yam yees siv li cas. Xws li koob yees duab CCD siv dab tsi yog ib tug tseem ceeb qhia tau. Tsis tas li, peb yuav tsum tau mus soj ntsuam cov koob yees duab network nrog zaub mov OSD, General, yog lub koob yees duab OSD tshuab raj ua ib nqe loj, tiam sis nws yuav yog ntau feature nplua nuj. Tab sis, nyob zoo tib yam scenes saib cases, peb xaiv ruaj ntseg yoos koob yees duab, feem ntau tsis muaj zaub mov OSD, xaiv yuav pheej yig khoom.
4. yuav DVR cov koob yees duab nab txuam yuav tsum nco ntsoov cov ntsiab lus nram qab no:
Diversification ntawm lub cev zoo thiab nyob ruaj
Khoom NVR no mas faib ua ob pawg: ib tug yog le SOC sib embedded tshuab khoom raws li kho vajtse, OS rau qhov Linux hais txog. Lwm yog xyuas los ntawm lub computer muaj tshuab khoom, OS WINCE, yuav muaj ib LINUX kev xaiv. Twg zoo le CPU hloov ceev, luv voj kev loj hlob, thiab hnov rau txoj kev loj hlob ntawm cov kev cai no tsis kub, txhawb ntau hom ntawv video compression. Disadvantage yog tias stability thiab kev cia siab rau tshaj cov SOC ntawm tus NVR yuav luag, vim yog txoj kev uas no NVR yog ib tug ruanjieya, ces kuv yuav tsis yug coob tus cov kev siv real-time.
5. hwj huam-dhau-Ethernet (POE)
POE nyob hauv xyoo tsis ntev los no kev loj hlob sai heev thiab ib daim ntawv thov wider lub network technology. POE (PowerOverEthernet) hais txog cov chav Ethernet Cat.5, cabling infrastructure hauv unchanged, tsuas yog ib txhia tus IP raws le terminals (xws li cov xov tooj IP, tus IP koob yees duab, thiab lwm yam) tau cov ntaub ntawv tseg rau lawv xwb, xws li yuav tau muab tshuab mus ncaj chaw. Ua li no, network koob yees duab tsis tau kis tau lwm yam hwj huam mov mus rau lub hwj huam mov. Los ntawm cov pooling ntawm ib ce (hwjchim uninterruptible mov) Saib kuas uas cov cuab yeej siv yam zuj zus lub sij hawm (txiav raws txoj cai nyob koj ib ce) mus dhia uninterrupted, thiab simplifies los xyuas dua. IEEE802.3af POE fais fab mov lawv ntawm tus txheej txheem tshiab raws li tus txheej txheem Ethernet, cov txuj no yuav tsum siv cov POE powered hwj huam ntaus ntawv noj tsis pub tshaj 12.95W.
6. wired/wireless ntawv xaiv
Txawm tias feem ntau ntawm cov vaj tse nruab nrog wired tes hauj lwm, thiab ntawm wired network yees txuas nrog lub network, tiam sis qhov wireless saib network dlaws txo complexity thiab txo nqi, tiam sis muaj ib qho hais. Piv txwv, uas yuav tau hauj lwm thiab pauv cov koob yees duab txoj hauj lwm, tiam sis doesnand #39; t xav rewire lub ntees (xws li supermarkets), los yog lub thaiv ua rau tus sab hauv architecture thiab tej chaw zoo nkauj, mus saib wireless network dlaws tau chaw nyob txoj kev sib tw no tau yooj yim.
7. xav txog kev teem security
Network yees muaj peb hom nta ruaj ntseg. Ua ntej, cov neeg siv ruaj ntseg kev txhawj xeeb, xws li cov neeg rau npe, tso cai tswj, thiab lwm yam; qhov thib ob, yog tus IP/MAC chaw nyob ruaj, tshuab hlwb hlau tsuas pub ruaj chaw tus IP/MAC; ib feem peb yog xyuas los ntawm kev ruaj ntseg lawm, siv khaub network ruaj ntseg technology.
