Kev muaj ntawm DVR nyob rau hauv cov khw muag khoom nws pom zoo. Xaiv cov ntawv sau npe tus kheej tsis txhais tau tias yuav yuav ib qho kim tshaj plaws. Feem ntau, nws tsis tshua muaj qhov sib txawv ntawm kev ua haujlwm. Yog li ntawd, nws tseem ceeb npaum li cas ntxiv kom tau txais cov txheej txheem muaj txiaj ntsig thiab sim ua tib zoo xav txog txhua lub ntsiab lus uas yuav yog qhov tseem ceeb. Tom qab txhua tus, leej twg paub dab tsi xyov koj DVR tuaj yeem sau tseg ntawm qee lub sijhawm thiab nws yuav pab tau koj lossis lwm tus neeg npaum li cas.
Koj puas xav tau sau, ua si, khaws qee yam thiab muab lub peev xwm los hloov cov ntaub ntawv mus rau video keb soj ntsuam cov ntaub ntawv?
Txhua yam no tuaj yeem ua tiav siv ib tus kheej ywj pheej - lub tshuab kaw lus. Nws yog lub sij hawm ib txhij ntawm ntau ntawm ntau cov haujlwm uas ua rau cov ntaub ntawv kaw ua ib qho ntawm cov khoom siv nrov tshaj plaws los ntawm kev saib xyuas video.
Ntau cov yam ntxwv thiab cov yam ntxwv ua rau nws niaj hnub no kom paub qhov sib txawv ntawm ntau hom DVR nrog lawv qhov zoo ntawm ib tus neeg qhov.
Kev ua haujlwm thiab cov xwm txheej ntawm kev ua haujlwm tom qab - qhov no yog dab tsi underlies cov kev xaiv ntawm lub cuab yeej xav tau. Nws tsis yog qhov xav tsis thoob tias ua ntej ua kev yuav khoom, nws yog qhov yuav tsum tau kawm kom paub meej txhua qhov kev lees paub ntawm cov khoom xav tau.
Cov Lus Qhia ntawm DVRs
Rau qhov yooj yim ntawm kev txheeb xyuas, txhua qhov DVR yuav muab faib ua ob qhov kev qhia:
- Sawv Ib Leeg DVR
- PC-raws DVR
Thawj hom DVR yog qhov txawv los ntawm qhov muaj txiaj ntsig zoo, lawv yooj yim siv, txhim khu kev qha thiab txaij. Ua ntej ua ib qho kev xaiv ntawm ib qho lossis lwm lub cuab yeej, ua tib zoo nyeem cov lus thiab cov yam ntxwv, lub ntsiab ntawm cov khoom nkag yog video:
- rau 32 raws;
- rau 16 raws;
- rau 8 raws;
- 4 raws.
Txhua yam nws yog nyob ntawm seb muaj pes tsawg lub koob yees duab koj npaj mus txuas.
Qhov kev taw qhia thib ob ntawm lub tshuab kaw lus yog daim npav khaws cia, uas tau nruab rau lub khoos phis tawj ntawm tus kheej nrog tus tsav tsheb uas tsim nyog. Qhov zoo ntawm cov khoom no:
- yooj yim ntawm teeb;
- muaj peev xwm ua kom nplai.
Raws li tus txheeb ze tsis zoo, qee qhov kev nyuaj hauv lub installation yuav tau sau tseg. Tsuas yog ib tus neeg kawm tiav tuaj yeem tiv thaiv nws tus kheej. Muaj lwm txoj kev xaiv - koj tuaj yeem yuav ib txwm siv cov khoom siv tau npaj hauv kev yees duab.
Tseem ceeb: thaum xaiv lub cuab yeej, koj yuav tsum coj mus rau hauv tus tswv yim twg cov tswv yim audio yuav raug siv txhawm rau kom ntseeg tau tias cov suab sib txuas ua ke thiab cov qauv duab, nrog rau saib xyuas uas koj yuav saib tau cov duab yav tom ntej.
Main video tawm tswv yim txhawb los ntawm DVRs: MJPEG, Wavelet, JPEG-2000, MG-4PE, H.264.
Txhawm rau cov duab zoo tshaj plaws, koj yuav tsum coj mus rau hauv tus account daim duab daws teeb meem: 720x574; 528x382; 360x286; 360x284.
Qhov zoo ntawm daim duab nyob ntawm tus naj npawb ntawm kev daws teeb meem: qhov ntau qhov ntsuas no, ua kom zoo dua.
Qhov tseem ceeb ntsuas yog qhov ntsuas ceev nrawm dua, uas yog taw qhia los ntawm FPS npav thiab txiav txim siab tus naj npawb ntawm cov thav duab uas tuaj yeem sau cia hauv ib ob. Cov European ntau tus qauv yog 25fps.
Ntxiv nta thaum xaiv DVR
Ua ntej ntawm tag nrho cov, qhov no yog qhov muaj: ntu chaw nres nkoj uas tso cai rau koj kom txuas tau ntau yam khoom siv ntxiv, USB chaw nres nkoj, network peev xwm, hom DDV tsav.
Cov kev txiav txim siab uas txiav txim siab qhov yooj yim thiab yooj yim ntawm kev siv ntawm DVR yog lub peev xwm voj sau, hnub tim thiab sijhawm ntawm video, cov duab tso tawm, thiab muaj peev xwm saib cov vis dis aus.
Los xaiv qhov DVR uas yog, koj yuav tau txais qhov zoo uas tsis tsim nyog, xws li:
- Cov peev xwm sau cia siv ntau hom qauv.
- Tau txais cov duab zoo heev zoo.
- Muaj peev xwm rov qab mus rau ib qho ntaub ntawv tshem tawm lossis mus rau cov chaw taws teeb servers hauv Is Taws Nem.
- Lub peev xwm hloov cov ntaub ntawv tsim nyog rau tub ceev xwm thiab lwm tus tub ceev xwm siv tus qauv yooj yim.
- Koj tuaj yeem xa tawm ntawm cov khauj khaum ntawm koj qhov DVR cov kab xev vis dis aus ntawm lub vev xaib hauv Is Taws Nem lossis Is Taws Nem.
Ua tib zoo kawm txhua tus yam ntxwv nyob hauv cov nyom, piv nrog tus nqi, ntsuas koj cov peev nyiaj txiag thiab yuav cov khoom siv xav tau ntau dua.
