M'munda wa chitetezo kanema anaziika, analogi ndi digito, komanso maukonde limodzi ndi mzake.Makamera oyambirira otetezera ndi analogi (Analog), otchedwa analogi, amatanthauza kuti amatsanzira kuchuluka kwa thupi komwe kumayimira phokoso, chidziwitso cha zithunzi, chizindikiro chowala cha cholinga chomwe chikujambulidwa chimasinthidwa kukhala chizindikiro chamagetsi, mawonekedwe a mawonekedwe a analogi. chizindikiro chimatengera kusintha kwa chidziwitso.Kuwala kosiyana kwa chinthu chomwe chikujambulidwa chikufanana ndi zowala zosiyanasiyana, zomwe zili mu chubu chamagetsi cha kamera zidzasintha moyenerera.Chizindikiro cha analogi ndikugwiritsa ntchito kusinthaku pakali pano kuyimira kapena kutsanzira chithunzi chomwe chagwidwa, kujambula mawonekedwe awo owoneka, ndiyeno kudzera mukusintha ndi kutsitsa, chizindikirocho chidzaperekedwa kwa wolandila, kuwonetsedwa pazenera, kubwezeretsedwanso ku chithunzi choyambirira. .
Makamera wamba analogi akhoza kugawidwa mu analogi SD makamera ndi analogi HD makamera malinga ndi kusamvana kwawo.Makamera a analogi nthawi zambiri amagwiritsa ntchito zolumikizira za BNC monga cholumikizira mavidiyo.
CVBS Kamera
Kamera ya Analog SD imadziwikanso kuti kamera ya CVBS, yotchedwa CVBS imatanthawuza Chizindikiro cha Composite Video Broadcast Signal, ndiko kuti, chizindikiro chophatikizika chowulutsa makanema.Imatumiza deta mu mawonekedwe a analogi.Kanema wamaguluwo ali ndi chidziwitso cha chromatic aberration (hue ndi machulukidwe) ndi chidziwitso (kuwala) ndikuchigwirizanitsa ndi kugunda kwamphamvu, kufalikira ndi chizindikiro chomwecho.
Makamera a CVBS amagwiritsa ntchito TVLine (wailesi yakanema, mzere wa TV) kuyeza kuthekera kothana ndi zithunzi.Makamera oyambilira a CVBS atha kupezeka kudzera pa chowunikira chamutu cha BNC chowonetsa mwachindunji zithunzi zamakanema, ndipo kuthwa kwa chithunzichi pawunivesite ya analogiyi kwenikweni ndi kuchuluka kwatsatanetsatane wamizere yopingasa yakuda ndi yoyera.Chifukwa chake kumveka bwino kwa kamera ya analogi ya gawo loyezera kumatchedwanso TV Line, yomwe imadziwikanso kuti TV Line (ndiko kuti, TVLine), nthawi zina imatchedwanso kumveka bwino kwa chisankho.Kusintha kwa kamera ya analogi nthawi zambiri kumayesedwa ndi ISO12233 Chart Card (Tchati), komanso mothandizidwa ndi zida zachitatu, monga ImaTest, HYRes, iSeetest ndi mapulogalamu ena kuti muwerenge mtengo weniweni.Mwachitsanzo, mizere 650 ikutanthauza kuti kamera iyi imatha kusiyanitsa mpaka mizere yolembedwa pa khadi yoyeserera pafupi ndi mtengo wa 650.
Mapulogalamu a kamera a CVBS ndi ambiri, pachimake pulogalamu iliyonse ndi DSP ndi sensa magawo awiri.Pulogalamu yoyambirira ya DSP makamaka ya Sony's SS-1 (2163), SS-11 (3141/2), SS-11X (4103), SS-HQ1 (3172), SS-2, Effio-E (SS4), Effio-P, Effio-A, Effio-V, etc.. Panasonic kuti D5 makamaka D4, D5 MN673276, Korea Samsung, NEXTCHIP purosesa, Taiwan a A-NOVA ADP mndandanda, etc.. Ndipo sesnor komanso makamaka kwa Sony, Panasonic, Samsung makamaka.Ma DSP osiyanasiyana omwe ali pamwambapa ndi ma sensor atha kupangidwira mayankho osiyanasiyana a kamera.
Mndandanda wa Effio ukhala Sony munthawi ya kamera yowunika ya analogi SD nyimbo yomaliza."Effio" ndi "Zowonjezera Zowonjezera ndi Purosesa Yabwino Yazithunzi" (Zowonjezera Zowonjezera ndi Purosesa Yazithunzi Zabwino).Kusamvana kwakukulu kwa mndandanda wa Effio kuli pafupi ndi mizere 750 - mizere 800.Ichi ndiye chigamulo chapamwamba kwambiri chomwe chinapangidwa ndi kamera ya analogi ya SD.Kamera yamtundu wa Effio imakhala ndi ma pixel owoneka bwino a 976 (yopingasa) x 582 (moyima), motero imadziwikanso kuti kamera ya 960H (ma pixel opambana kuposa 960 munjira yopingasa).
Mndandanda wa Effio unayambika kuzungulira 2009, ndipo yankho la Effio-P linayambika mu 2012. Pambuyo pake Sony idzayang'ana kwambiri pa kafukufuku ndi ntchito zachitukuko pa CMOS, makamera a SD analogi nawonso amatha pang'onopang'ono.
Kamera ya analogi ya HD
Sony anasiyidwa CCD, cholinga chachikulu adzakhala anasamutsidwa kwa CMOS ndi chifukwa zinthu zofanana kusamvana, mtengo wa CMOS ndi wotsika kwambiri, ndi apamwamba kusamvana, ndi waukulu kusiyana mtengo, kutanthauza kuti CCD si oyenera mkulu-kusamvana. makamera achitetezo.Makamera achitetezo ku HD, chinthu choyamba chomwe chiyenera kuchotsedwa ndi sensa ya CCD.
Tags:CCTV Kamera, CCTV Lens
Nthawi yotumiza: Mar-15-2023
