01 ngo 05
Inyaniso malunga neeprojekithi zevidiyo ze-4K
Ukususela ekuqalisweni kwabo ngo-2012, impumelelo ye-4K Ultra HD TV ayinakukhutshwa. Ukuchasana nokuxeliswa kwe-3DTV, abathengi baye bavakalisa kwi-bandwagon ye-4K ngenxa yesigqibo sayo sokwandiswa , i- HDR , kunye nebala elibanzi lombala. Zonke eziye zaphakamisa amava okubukela iTV.
Nangona ii-HD ze-HD zeDVD zihamba ezinqabeni zesitoreji, uninzi lweeprojekti zevidyo zevidiyo ezikhoyo zihlala zingama- 1080p endaweni engama-4K. Iyiphi isizathu esiyintloko? Ngokuqinisekileyo, ukufaka i-4K kwiprojekti yevidiyo kuninzi kakhulu kunexabiso leTV, kodwa akusiyo ibali elipheleleyo.
02 we 05
Kukho konke malunga nePixels
Ngaphambi kokungena kwi-4K ekuphunyezweni kwi-TVs vs video projectors, kufuneka sibe nenqaku lokubhekisela ekusebenzeni kuyo. Le ngongoma yi pixel.
I-pixel ichazwa njengomfanekiso wesithombe. I-pixel ngayinye iqulethe imbala ebomvu, eluhlaza, nangombala obomvu (ebizwa ngokuba yi-pixels). Ukuze ukhiqize umfanekiso opheleleyo kwiTV okanye i-screen projection screen, kufuneka inani elikhulu leepekseli. Inombolo okanye iipekseli ezingaboniswa zikhetha isigqibo sekrini.
I-4K Iphunyezwa njani KwiiTV
Kwiimabonwakude, kukho inkulu kwesikrini apho "ukupakisha" kwinani leepekseli ezifunekayo ukubonisa isisombululo esithile.
Kungakhathaliseki ukuba ubukhulu besikrini bee-TV ze-1080p, kukho iipekseli ezi-1,920 zihlala zihamba ngaphesheya kwesikrini (umqolo ngamnye) kunye neeplayseli eziyi-1,080 zikhuphuka kwaye zihla phantsi kwesikrini (ngekholamu nganye). Ukugqiba inani leepekseli ezigubungela yonke indawo yeskrini, ukwandisa inani leepekseli ezingezantsi kunye nenani lamaphikseli angama-vertical. Kwii-TV ze-1080p ezizalisa malunga nee-pixels ezigidi ezi-2.1. Kwii-TV ze-4K ze-HD ezi-4K, kukho ii-pixel ezi-3,480 eziphambili kunye neepikseli ezi-2,160 eziphambili, ezibangele inani eli-8.3 yezigidi zeepekseli ezigcwalisa isikrini.
Ngokuqinisekileyo zininzi zamaphikseli, kodwa ngeeskrini zeTV eziqhelekileyo ezingama-40, 55, 65, okanye ii-intshi ezingama-75, abavelisi banendawo enkulu (ngokuthetha) ukusebenzisana nabo.
Nangona kunjalo, kwiiprojekti zevidiyo ze- DLP kunye ne- LCD , nangona imifanekiso ifakwe kwisikrini esikhulu - kufuneka idlule-okanye idlulise i-chips ngaphakathi kwiprojekithi encinci kunomgca weLCD okanye i-OLED TV .
Ngamanye amagama, inani elifunekayo leepekseli kufuneka libe lincinci ukwenzela ukuba liqhutywe kwi-chip kunye nomhlaba onxantathu onokuthi ube ngu-1-intshi square. Oku kufuna imveliso eninzi kunye nokulawula umgangatho okwandisa kakhulu indleko yomenzi kunye nomthengi.
Ngenxa yoko, ukuphunyezwa kwesisombululo se-4K kwiiprojekti zevidiyo akukona ngqo njengoko kuTV.
03 we 05
Indlela Yokunyaniseka: Ukukhawula iindleko
Ekubeni ukucima zonke iipekseli ezifunekayo kwi-4K kwi-chip (s) ezincinci zibiza, i-JVC, i-Epson, kunye ne-Texas Instruments ziye zenye enye into yokuba abangobudala bavelisa umboniso ofanayo kunye neendleko eziphantsi. Indlela yabo ibizwa ngokuba yiPixel Shifting. I-JVC ibhekisela kwinkqubo yabo njenge-eShift, i-Epson ibhekisela kubo njenge-4K Ukuphuculwa (4Ke), kunye neTexas Instruments zibhekiselele kubo ngokwasemthethweni njengeTI UHD.
I-Epson kunye neJVC Indlela yeeprojekti ze-LCD
Nangona kukho ulwahlulo oluncinane phakathi kweenkqubo ze-Epson kunye neeJVC, nantsi zizinto ezibalulekileyo zendlela iindlela zabo ezimbini ezisebenza ngayo.
Esikhundleni sokuqala ngentambo ebiza kakhulu equlethe zonke iipekseli eziyi-8.3 yezigidi, i-Epson ne-JVC iqalisa nge-1080p (2.1 million pixels). Ngamanye amazwi, kwi-core yabo, i-Epson kunye ne-JVC baseseprojekti yevidiyo ye-1080p.
I-eShift okanye i-4Ko inkqubo isebenze, xa i-signal ye-4K ye-input signal ifunyenwe (njenge- Ultra HD Blu-ray kwaye ukhethe iinkonzo zokusasaza ), ikwahlukana kwimifanekiso ye-1080p (ngasinye sinesiqingatha se-image engama-4K). Iprojeksi ihamba ngokukhawuleza nganye iipikseli ngokuphindaphindiweyo-nangaphandle ngokubanzi ububanzi beepixel kunye neeprojekthi ezibangelwa kwisikrini. Ishukumo sokutshintsha sikhawuleza, siyiziphukuphuku umbukeli ukuba aqonde umphumo njengoko sisondele kwindlela yokujonga isicatshulwa se-4K.
Nangona kunjalo, ekubeni i-pixel shift ishafu yesi-pixel, nangona isiphumo esibubonayo sinokufana no-4K kune-1080p, ngokwezobugcisa, ayikho iipekseli ezininzi eziboniswe kwisikrini. Enyanisweni, inkqubo yokuguqulwa kwepikseli ephunyezwa yi-Epson neJVC kuphela iziphumo ekuboniseni iipekseli ezibonakalayo ezi-4.1 yezigidi, okanye kabini kwinani njenge-1080p.
Imithombo ye-1080p kunye nesisombululo esisezantsi, kwiinkqubo ze-Epson kunye neeJVC, i-pixel yokuguqula iteknoloji iphakamisa umfanekiso (ngamanye amazwi, i-DVD yakho kunye neqoqo ye-Blu-ray Disc iya kufumana ukukhutshwa kweenkcukacha ngaphezu kwiprojekti eyi-1080p eqhelekileyo).
Kufuneka kwakhona kuboniswe ukuba xa iteknoloji yePixel Shift isebenze, ayisebenzeli ukubukela kwe-3D. Ukuba isalathisi se-3D singenayo okanye i-Motion Interpolation iyasebenza, iShift okanye 4K Ukuphuculwa ngokuzenzekelayo, kwaye umfanekiso obonisiweyo uza kuba ngu-1080p.
Imizekelo yeEpson 4Ke Projectors .
Imizekelo ye-JVC eShift Projectors.
Iindlela zeTexas zeNdlela zoProjekti zeDLP
I-Epson kunye neJVC ziyi-platforms zeprojekti ezisebenzisa iteknoloji ye-LCD, kodwa ukutshintsha kwiphikiseli yokutshintshwa kuye kwaphuhliswa kwiplani yeprojekthi yeprojekthi ye-Texas Instruments DLP.
Esikhundleni sokusebenzisa i-chip ye-1080p ye-DLP, i-Texas Instruments inika i-chip eqala nge-2716x1528 (4.15 yezigidi) zamaphikseli (ephindwe kabini kwinombolo ye-Epson ne-JVC).
Oko kuthetha okokuba xa inkqubo yePixel Shift kunye nokuqhutyelwa kwevidiyo eyongezelelweyo kuphunyezwa kwiprojekitha isebenzisa inkqubo ye-TI, endaweni ye-pixels engama-4 yezigidi, iphrojekitha ithumela iipirkisi ze-8.3 yezigidi "ezibonakalayo" kwesikrini - kabini kangangoko I-eShift ne-Epson 4Ke ye-JVC. Nangona le nkqubo ayifani ngokufanayo ne-Sony's native 4K, ekubeni ingaqala ngeipikseli eziziimiliyoni eziyi-8.3, kuza ngokubonakalayo kukufutshane, ngeendleko ezifana neenkqubo ezisetyenziswe ngu-Epson ne-JVC.
Njengokuba kunye neenkqubo ze-Epson kunye neeJVC, iimpawu zevidiyo ezingenayo zixhaswa okanye zicutshungulwe ngokufanelekileyo kwaye, xa ubona umxholo we-3D, inkqubo yePixel Shifting ikhutshaziwe.
U-Optoma ngowokuqala ukuphumeza inkqubo ye-TI UHD, eya kulandelwa ngu-Acer, Benq, i-SIM2, i-Casio, ne-Vivitek (hlala ulungele ukuhlaziywa).
04 we 05
Indlela yoMthonyama: u-Sony uya Kuphela
U-Sony unomdla wokuhamba ngendlela yakhe (khumbula i-BETAMAX, i-miniDisc, i-SACD, kunye nekhasethi ze-DAT zomsindo?) Kwaye benza njalo kwi-4K video projection. Esikhundleni seendlela ezithintekayo zokuguquka kwePixel, ukususela ekuqaleni u-Sony uye "Uhlobo lwamaKhaya angama-4K", kwaye luye lwavakalisa kakhulu.
Oko kuthetha indlela yokuzalwa kuthetha ukuba zonke iipekseli eziyimfuneko ezifunekayo ukulungiselela umfanekiso wesisombululo esingu-4K zifakwe kwi-chip (okanye empeleni iichips ezintathu - enye ngombala oyintloko).
Kubalulekile ukuba uqaphele ukuba inani lepikseli kwii-chips ze-4K ze-Sony zingama-pixel eziyi-8,8 (i-4096 x 2160), enomgangatho ofanayo osetyenziswa kwi-cinema ye-4K. Oku kuthetha ukuba wonke umxholo we-4K umxhasi (i-Ultra HD Blu-ray, njl ...) ufumana ukunyuka okunye ku-500 000 yeephikseli.
Nangona kunjalo, i-Sony ayisebenzisi iindlela zokuguqula iipikseli ukulungiselela iifayile ezine-4K ezinjengekrini. Kwakhona, i-1080p (kuquka i-3D) kunye nemithombo yokucwangcisa ephantsi iphakanyisiwe "kwi-4K-like" quality quality.
Inzuzo yendlela ye-Sony, eqinisweni, kukuba umthengi uthengisa iprojekti yevidiyo apho inani lamaphikseli ngokwenyama okwenene ngaphezu kwe-4K Ultra HD TV.
Iingxaki zeprojekthi ze-Sony 4K kukuba zibiza kakhulu, ngexabiso lokuqala malunga ne-$ 8,000 (ngo-2017). Yongeza intengo yesikrini esifanelekileyo, kwaye isisombululo siya kuba kubi kakhulu kunokuthenga i-screen enkulu ye-4K Ultra HD TV-kodwa ukuba ukhangele umfanekiso wesentimitha ezingama-85 okanye ikhulu, kwaye ufuna ukuqiniseka ukuba uyenzeka u-4K, i-Sony indlela efanelekileyo kuyinqwenelekayo.
Imizekelo yeeprojekti zevidiyo ze-Sony 4K
05 we 05
Ngaphantsi
Ziziphi zonke iipilisi ezingentla zingaphezulu kwezi zixazululo ze-4K, ngaphandle kweendlela ezisemhlabeni ezisetyenziswe ngu-Sony, iphunyezwe ngokuhlukileyo kwiiprojekti ezininzi zevidiyo kunokuba ziTV. Ngenxa yoko, nangona kungenakudingeka ukwazi zonke iinkcukacha zobugcisa, xa uthengela iprojekti yevidiyo ye "4K", abathengi kufuneka baqaphele iilebula ezifana neNative, e-Shift, Ukuphuculwa kwe-4K (4Ke), kunye ne-TI DLP UHD.
Kukhona impikiswano eqhubekayo, kunye neentetho kumacala omabini, malunga nokufaneleka kwepikelli ekutshintshiseni njengokuba endaweni ye-4K yangomthonyama - uya kuva imiqathango "4K" "Faux-K", "Pseudo 4K", "4K Lite", iphoswe ukujikeleza njengoko usebenzise ukuhlolwa kweprojekti yevidiyo kunye nevenkile kumthengisi wakho wasekuhlaleni.
Emva kokubona imifanekiso ekhethiweyo usebenzisa enye yeendlela ezingenhla ngaphezu kwe-Sony, Epson, JVC, kunye ne-Optoma, kungekudala, kunzima ukuchazela umahluko phakathi kwendlela nganye, ngaphandle kokuba usondele kakhulu kwisikrini, ukhangele kwindawo yokuvavanya elawulwayo apho ubona uhlangothi oluxhomekeke kwicala ngalinye kwiprojekti enamanye amacandelo (umbala, ulwahlulo, umbane okhanyayo).
Umntu ongu-4K unokujonga ngathi "uyabetha" ngokuxhomekeke kwisayizi yesikrini (hlola izikrini eziyi-120 intshi kunye naphezulu), kunye nomgama ohleliyo ukusuka kwisikrini - Nangona kunjalo, ukubeka ngokucacileyo, amehlo akho anokukwazi ukulungisa kuphela iinkcukacha ezininzi - ngakumbi kwimifanekiso ehambayo. Yongeza into yokuba kukho ukuhluka kweendlela ngamnye esizibona ngayo, akukho bukhulu beskrini okanye umgama wokubukela oya kubakho ukuvelisa ukuhlukana okufanayo kombukeli ngamnye.
Ngomlinganiselo weendleko phakathi koomthonyama (apho amaxabiso aqala malunga ne-$ 8,000) kunye nokuguqulwa kwepikelli (apho amaxabiso aqala ngaphantsi kwee-3,000 zamaRandi), ngokuqinisekileyo into enokuyiqwalasela, ngakumbi xa ufumanisa ukuba amava okubonakalayo afaniswa.
Ukongezelela, gcina ingqalelo ukuba isisombululo, nangona kubalulekile, sinye nje into ekufumaneni umgangatho omhle womfanekiso - kwakhona uthathe indlela yokukhanya, ukuvelisa okukhanyayo kunye nokukhanya okukhanyayo , kwaye ungakulibala ukuba ufuna into enhle isikrini .
Kubalulekile ukwenza ukujonga kwakho ukufumanisa ukuba isisombululo sibonakala siphumelele kuwe, kwaye yiyiphi impawu / uphawu oluthile oluhambelanayo nebhajethi yakho.