01 ya 05
Zoona Zowonjezera Ma Project Video 4K
Kuchokera kumayambiriro awo mu 2012, kupambana kwa 4K Ultra HD TV sikungatheke. Kusiyanitsa kwa debacle yomwe inali 3DTV, ogula adakwera pa 4K bandwagon chifukwa cha kuwonjezereka kwake , HDR , ndi mtundu waukulu wa gamut. Zonse zomwe zakhala zikukweza zowonera TV.
Ngakhale ma TV a Ultra HD akuuluka pamasitolo a sitolo, ambiri a nyumba zowonetsera kanema zowonongeka zilipo 1080p osati 4K. Chifukwa chachikulu ndi chiyani? Zoonadi, kuphatikizapo 4K mu kanema wa kanema ndi okwera mtengo kwambiri kusiyana ndi TV, koma si nkhani yonse.
02 ya 05
Ndizo Zonse Zonse za Pixels
Musanalowemo momwe 4K ikugwiritsidwira ntchito mu ma TV ndi video pulojekiti, tifunika kukhala ndi mfundo yoti tigwiritse ntchito. Mfundo imeneyo ndi pixel.
Pixel imatanthauzidwa ngati chinthu chojambula. Pikisili iliyonse imakhala ndi mauthenga ofiira, ofiira, ndi a buluu (omwe amatchedwa pixels). Kuti mupange chithunzi chonse pa TV kapena kanema kujambula pulogalamu yaikulu pixel akufunika. Chiwerengero kapena pixels zomwe zingathe kuwonetsedwa zimatsimikizira kusankhidwa kwasalu.
Momwe 4K Imayendetsedwa Mu Ma TV
Mu ma TV, pali chinsalu chachikulu chomwe mungachite kuti "mutenge" mu chiwerengero cha pixel kuti chiwonetsedwe.
Zosasamala zawindo zenizeni za ma TV 1080p, nthawizonse pamaphikseli 1,920 akuthamanga pazenera (pamzere uliwonse) ndi ma pixel 1,080 akukwera ndi pansi pazenera. Kuti mudziwe chiwerengero cha pixelisi chophimba pazenera lonse, mumachulukitsa chiwerengero cha pixel zowonongeka ndi chiwerengero cha ma pixelisi ofunika. Kwa ma TV 1080p omwe amawerengera pafupifupi pixels 2.1 million. Kwa ma TV 4K Ultra HD, pali pixelisi zokwana 3,480 zowonongeka ndi pixeloni 2,160 zowonongeka, zomwe zimachititsa kuti mapepala angapo 8.3 miliyoni akwaniritse chinsalu.
Izi ndizambiri zamaphikiselini ambiri, koma ndi makina a TV omwe ali ndi 40, 55, 65, kapena 75 mainchesi, opanga amakhala ndi malo akuluakulu (mwachidule) ogwira nawo ntchito.
Komabe, kwa DLP ndi LCD mafilimu, ngakhale zithunzi zikuwonetsedwa pawindo lalikulu - amayenera kudutsa kapena kusonyeza chips mkati mwa projector omwe ali ang'ono kwambiri kuposa LCD kapena OLED TV panel.
Mwa kuyankhula kwina, chiwerengero chofunikira cha pixelisi chiyenera kukhala chaching'ono kuti chiphatikizidwe mu chipangizo chokhala ndi makina ozungulira omwe angakhale pafupi masentimita awiri. Izi zimafuna kupanga bwino kwambiri ndi kulamulira kwapamwamba komwe kumawonjezera mtengo wa wopanga ndi wogula.
Chifukwa chake, kukhazikitsidwa kwa chisankho cha 4K pazithunzi zowonetsera sizowoneka molunjika monga momwe ziliri pa TV.
03 a 05
Njira Yabwino: Kudula Mitengo
Popeza kufinya ma pixel onse ofunika ku 4K pazitsulo zing'onozing'ono, JVC, Epson, ndi Texas Instruments abwera ndi njira ina yomwe amati amadzitengera zofanana zomwe zimawoneka pamtengo wotsika. Njira yawo imatchedwa Pixel Shifting. JVC imatanthawuza ku machitidwe awo monga eShift, Epson imatanthawuza awo ngati Kuwonjezeka kwa 4K (4Ke), ndipo Texas Instruments amaimira awo mwachindunji monga TI UHD.
Epson ndi JVC Njira ya Project LCD Projectors
Ngakhale pali kusiyana pakati pa machitidwe a Epson ndi JVC, izi ndizofunikira momwe njira zawo ziwiri zimagwirira ntchito.
M'malo moyamba ndi chipangizo chokwera mtengo chomwe chili ndi pixelisi 8.3 miliyoni, Epson ndi JVC amayamba ndi zipilala za 1080p (2.1 pixels). Mwa kuyankhula kwina, pachimake, Epson ndi JVC adakali opanga mavidiyo 1080p.
Ndi eShift kapena 4Ke yowonjezeredwa, pamene chizindikiro chowunikira mavidiyo 4K chikupezeka (monga Ultra HD Blu-ray ndikusankha maulendo othamanga ), imagawidwa muzithunzi 2 1080p (iliyonse ndi theka la chithunzi cha 4K). Pulojekitiyo imatha kusintha mofulumira pixel iliyonse mozungulira-ndi-kunja ndi upakati wa hafu ya pixel ndipo imapanga zotsatira pamsalu. Kusunthirako kuli mofulumira kwambiri, kumapusitsa wopenya kuti azindikire zotsatirapo ngati momwe zikuwonetsera maonekedwe a 4K.
Komabe, popeza kusintha kwa pixel ndi theka la pixel, ngakhale kuti zotsatirazi zikhoza kukhala ngati 4K kuposa 1080p, mwachinsinsi, palibe pixels ambiri omwe akuwonetsedwa pawindo. Ndipotu, ndondomeko ya kusintha kwa pixel yomwe ikugwiridwa ndi Epson ndi JVC imangowonjezera pa mapikseli ofunika "4.1", kapena kawiri chiwerengero cha 1080p.
Kwa 1080p ndi m'munsimu zosungirako zowonjezera, muzitsulo za Epson ndi JVC, teknoloji yosunthira pixel imapanga chithunzichi (mwachidule, DVD yanu ndi Collection Blu-ray Disc zidzakuthandizirani mwatsatanetsatane pa pulojekiti ya 1080p).
Tiyeneranso kuwonetsanso kuti pamene Pixel Shift yolojekiti yatsegulidwa, sizigwira ntchito kuwonetsera 3D. Ngati chizindikiro cha 3D chikubwera chikadziwika kapena Kutsekedwa kwa Mapulogalamu kutsegulidwa, eShift kapena Kukula kwa 4K kumatsekedwa, ndipo chithunzi chowonetsedwa chidzakhala 1080p.
Zitsanzo za JVC eShift Projectors.
Njira ya Texas Instruments kwa Project Project DLP
Epson ndi JVC ndi mapulatifomu opanga ntchito omwe amagwiritsa ntchito luso la LCD, koma kusintha kwa pixel kusinthana kwakhazikitsidwa pa nsanja ya Project Instrument DLP ya Texas Instruments.
Mmalo mogwiritsa chipangizo cha 1080p DLP, Texas Instruments ikupereka chip chiyambi ndi 2716x1528 (4.15 miliyoni) pixel (yomwe ndi kawiri nambala yomwe Eps ndi JVC chips zimayambira).
Izi zikutanthawuza kuti pamene Pixel Shift kukonza ndi zina zowonjezera kanema zikugwiritsidwa ntchito pulojekiti pogwiritsa ntchito njira ya TI, mmalo mwa mapikseli pafupifupi 4 miliyoni, pulojekiti imatulutsa pixels "8.6 miliyoni" pawindo - kawiri kuposa Sphift ya JVC ndi 4Ke Epson. Ngakhale kuti dongosolo lino silili chimodzimodzi ndi a Sony Native 4K, chifukwa sichiyambira ndi pixeliti 8,3 miliyoni, zimabwera moyandikira kwambiri, pamtengo wofanana ndi wa Epson ndi JVC.
Monga momwe zilili ndi machitidwe a Epson ndi JVC, zojambula zowonetsera zamakono zimasinthidwa kapena zimasinthidwa moyenera ndipo, pakuwona zinthu za 3D, ndondomeko ya Pixel Shifting imaletsedwa.
Optoma ndiye woyamba kugwiritsa ntchito dongosolo la TI UHD, kuti lizitsatiridwa ndi Acer, Benq, SIM2, Casio, ndi Vivitek (onetsetsani kuti mukukonzekera).
04 ya 05
Njira Yachikhalidwe: Sony Imachita Zokha
Sony akuzoloŵera kuyenda njira yake (kumbukirani BETAMAX, miniDisc, SACD, ndi DAT audio cassettes?) Ndipo akuchitanso momwe akuwonera mavidiyo 4K. M'malo mwa njira yowonjezera yogwira ntchito ya Pixel, kuyambira pachiyambi Sony wapita "Wachibadwidwe 4K", ndipo wakhala akumva mawu ake.
Chimene chikhalidwecho chimatanthauza kuti mapepala onse oyenerera amayenera kupanga chithunzi cha 4K chophatikizidwa amaloledwa mu chip (kapena kwenikweni zipilala zitatu - chimodzi pa mtundu uliwonse).
Ndikofunikira kudziwa kuti kuwerengera kwa pixel pamapiko a 4K a Sony kwenikweni ndi pixel 8,8 miliyoni (4096 x 2160), yomwe ndi yofanana yomwe imagwiritsidwa ntchito pa zamalonda 4K. Izi zikutanthauza kuti zonse zomwe zimagwiritsidwa ntchito ndi 4K (Ultra HD Blu-ray, etc ...) zimapititsa patsogolo pang'ono kuwerengeka kwa pixel 500,000.
Komabe, Sony sagwiritsa ntchito njira zamasuntha zosinthira kupanga mapangidwe ofanana ndi 4K pawindo. Komanso, 1080p (kuphatikizapo 3D) ndi zowonongeka zowonjezereka zimakwezedwa ku "khalidwe la 4K-ngati" lazithunzi.
Kupindula kwa njira ya Sony, ndithudi, ndi kuti ogula akugula kanema kanema komwe nambala ya pixel weniweniyo imakhala yochepa kuposa ya 4K Ultra HD TV.
Zopweteka za opanga majekiti 4K a Sony ndikuti ndi okwera mtengo kwambiri, ndi kuyamba mitengo pafupifupi $ 8,000 (kuyambira mu 2017). Onjezerani mtengo wa pulogalamu yoyenera, ndipo njirayi imakhala yotsika mtengo kuposa kugula lalikulu screen 4K Ultra HD TV - koma ngati mukuyang'ana chithunzi masentimita 85 kapena zazikulu, ndipo mukufuna kutsimikiza kuti muli 4K, Sony Kufikira ndithudi ndi chinthu chofunikira.
Zitsanzo za Ojekera Mavidiyo a Sony 4K
05 ya 05
Mfundo Yofunika Kwambiri
Zomwe zili pamwambazi zikuwongolera kuti chidziwitso cha 4K, kupatulapo chikhalidwe chogwiritsiridwa ntchito ndi Sony, chikugwiritsidwa ntchito mosiyana pa mafilimu ambiri omwe ali pa TV kuposa pa TV. Chotsatira chake, ngakhale kuti sikofunikira kudziŵa zonse zamakono, pamene mukugula masewera a "4K", ogula amafunikira kudziwa malemba monga Achibadwa, e-Shift, 4K Kuonjezera (4Ke), ndi dongosolo la TI DLP UHD.
Pali mpikisano wokhazikika, ndi omenyera mbali zonse, ponena za kuyenerera kwa pixel kusuntha monga mmalo mwa mbadwa 4K - mudzamva mawu akuti "4K" "Faux-K", "Pseudo 4K", "4K Lite", akutayidwa kuzungulira pamene mumagwiritsa ntchito mafilimu owonetsera kanema ndi masitolo kwa wogulitsa kwanu.
Pambuyo poona zithunzi zojambula pogwiritsa ntchito zomwe mwasankha pamwamba pa Sony, Epson, JVC, ndi posachedwa Optoma, nthawi zambiri zimakhala zovuta kudziwa kusiyana pakati pa njira iliyonse, kupatula ngati mutayandikira pafupi ndi chinsalu, mukuwona malo oyesedwa omwe mumayesa momwe mukuwonera mbali imodzi ndi mbali kufanana kwa mtundu uliwonse wa pulojekiti yomwe imathandizidwanso pazinthu zina (mtundu, kusiyana, kuwala).
Wachibadwa 4K angawoneke ngati "wolimba" malingana ndi kukula kwazithunzi (yang'anani zojambula masentimita 120 ndi apo), ndi malo enieni omwe amakhala pamsankhulo - Komabe, kuti muwone mosavuta, maso anu angathetsere zambiri - makamaka ndi mafano osuntha. Onjezerani kuti pali kusiyana pakati pa momwe aliyense wa ife akuwonera, palibe kukula kwazenera pazenera kapena kuyang'ana mtunda umene ungapangitse kuti pakhale kusiyana kofanana kwa wowona aliyense.
Kusiyana kwa mtengo pakati pa mbadwa (komwe mitengo imayambira pafupifupi $ 8,000) ndi pixel kusuntha (kumene mitengo imayambira zosachepera $ 3,000), ichi ndichinthu choyenera kuganizira, makamaka ngati mutapeza kuti zochitikazo zikufanana.
Kuwonjezera apo, kumbukirani kuti kuthetsa, ngakhale kuti n'kofunika, ndi chinthu chimodzi chokha chopezera khalidwe lalikulu lachifanizo - komanso tengani njira yowunikira njira , kuwala kowala , ndi kuwala kowala kuganiziridwa, ndipo musaiwale kuchititsa kufunikira kwa ubwino chithunzi .
Ndikofunika kuti muzichita zomwe mwawonazo kuti mudziwe njira yomwe ikuwoneka bwino kwa inu, ndipo ndi mtundu wanji womwe umaphatikizapo bajeti yanu.