01 ka 05
Iqiniso Ngamaprosesa wevidiyo angu-4K
Kusukela ekusungulweni kwawo ngo-2012, impumelelo ye-4K Ultra HD TV ayinakuphikwa. Ukuqhathanisa okuvela ekukhohliseni okwakungu-3DTV, abathengi baye bavuka kwi-bandwagon ye-4K ngenxa yesinqumo saso sanda , i- HDR , nebala elibanzi lombala. Konke okuye kwaphakamisa nakanjani isipiliyoni sokubukwa kwe-TV.
Ngenkathi i-Ultra HD TV ihamba ezinqoleni zesitolo, iningi lamaprosesa asekhaya wevidiyo yaseshashalazini ayatholakala namanje angu- 1080p esikhundleni se-4K. Iyini isizathu esiyinhloko? Ngokuqinisekile, ukufaka i-4K kumprojekti wevidiyo kuyabiza kakhulu kunayo i-TV, kodwa akuyona indaba yonke.
02 ka 05
Konke Okuphathelene Namaphikseli
Ngaphambi kokungena ukuthi i-4K isetshenziswa kanjani kuma-TVs vs video projectors, kudingeka sibe nenkhomba yokusebenzela. Lelo phuzu yi-pixel.
I-pixel ichazwa njengesici sezithombe. I-pixel ngayinye iqukethe ulwazi lombala obomvu, oluluhlaza, noluluhlaza okwesibhakabhaka (olubizwa ngokuthi amaphikseli angaphansi). Ukuze udale isithombe esigcwele ku-TV noma isikrini sokubukwa kwevidiyo inamba enkulu yamaphikseli iyadingeka. Inombolo noma amaphikseli angaboniswa anquma isinqumo sesikrini.
I-4K Isetshenziswa kanjani kuma-TV
Emathelevishini, kukhona indawo enkulu yesikrini lapho kufanele "upake khona" inani lamaphikseli adingekayo ukubonisa isinqumo esithile.
Kungakhathaliseki ukuthi usayizi weskrini wangempela wama-TV angu-1080p, kunamaphikseli angu-1,920 njalo asebenza ngaphesheya kwesikrini (umugqa ngamunye) namaphikseli angu-1,080 aphezulu futhi ahla esibukweni ngokuqondile (ikholomu ngayinye). Ukuze unqume inani lamaphikseli elihlanganisa yonke indawo yeskrini, ukwandisa inani lamaphikseli angemuva nenombolo yamaphikseli aqondile. Ama-TV angu-1080p athola amaphikseli angu-2.1 million. Ku-4K Ultra HD TV, kunamaphikseli angu-3,480 angama-horizontal nama-pixel angu-2,160 aqondile, okwenza inani lamaphikseli ayizigidi ezingu-8.3 agcwalise isikrini.
Yilokho ngempela amaphikseli amaningi, kodwa ngamasayizi ombukiso we-TV angama-40, 55, 65, noma ama-intshi angu-75, abakhiqizi banendawo enkulu (okukhulunywa ngayo) ukusebenza nabo.
Noma kunjalo, kumaphrojekitha wevidiyo ye- DLP ne- LCD , nakuba izithombe zivezwa esikrinini esikhulu - kufanele zidlule noma zibonise izinkinobho ngaphakathi kwiprojekitha ezincane kakhulu kunephaneli le- LCD noma i-OLED TV .
Ngamanye amazwi, inombolo edingekayo yamaphikseli kufanele ibe yincinjana ukuze igxilwe kwi-chip nge-surface engxenyeni engama-square-inch square. Lokhu kudinga ngempela ukukhiqizwa okucacile nokulawulwa kwekhwalithi okukhulisa kakhulu izindleko zomenzi nomthengi.
Ngenxa yalokho, ukuqaliswa kwesinqumo se-4K kumavidiyo weprojekti akuyona into eqondile njengoba ku-TV.
03 ka 05
Indlela Yokunyathelisa: Ukunciphisa Izindleko
Njengoba ukucindezela wonke ama-pixel adingekayo ku-4K kuma-chip (ama) amancane abizayo, i-JVC, i-Epson, ne-Texas Instruments zivele ngenye indlela ukuthi zifaka umphumela ofanayo wokubukwa ngezindleko eziphansi. Indlela yabo ibizwa ngokuthi yiPixel Shifting. I-JVC ibhekisela kwisistimu yabo njengo-eShift, i-Epson ibhekisela kubo njenge-4K Ukuthuthukiswa (4Ke), ne-Texas Instruments ibhekisela kubo ngokwethukela njenge-TI UHD.
I-Epson ne-JVC Indlela yamaProjekthi ye-LCD
Yize kukhona umehluko omkhulu phakathi kwezinhlelo ze-Epson ne-JVC, nansi okubalulekile ukuthi izindlela zabo ezimbili zisebenza kanjani.
Esikhundleni sokuqala nge-chip ebiza kakhulu equkethe wonke ama-pixel ayizigidi ezingu-8.3, i-Epson ne-JVC iqalisa nge-standard 1080p (2.1 million pixels) amapipi. Ngamanye amazwi, ekhoneni labo, i-Epson ne-JVC namanje iphrojekthi yevidiyo ye-1080p.
Ngesistimu ye-eShift noma i-4K isebenze, uma isignali yokufaka ividiyo ye-4K itholakele (njenge- Ultra HD Blu-ray futhi ukhethe amasevisi wokusakaza ), ihlukaniswe ibe izithombe ezingu-2 1080p (ngayinye nengxenye yesithombe se-4K). Umshini weprojeksi uphinde ushintshe ngokushesha i-pixel ngayinye ngokuphindaphindiwe ngokuphindaphindiwe ngokuphakama kwesigamu se-pixel kanye namaphrojekthi umphumela esibukweni. Ukunyakaza okuguqukayo kuyashesha kakhulu, kuphutha umbukeli ukuba aqonde umphumela njengokubukeka kwesithombe sesinqumo se-4K.
Kodwa-ke, njengoba ukushintsha kwephikelli kungumyingcele wephikelli kuphela, nakuba umphumela obonakalayo ungafana no-4K kunama-1080p, ngokweqiniso, awekho amaphikseli amaningi aboniswa esikrinini. Eqinisweni, inqubo yokuguqula i-pixel eqaliswa yi-Epson ne-JVC imiphumela kuphela ekuboniseni amaphikseli angama-4.1 wezigidi "ezibukwayo," noma kabili inombolo njenge-1080p.
Ukuze uthole imithombo yokuqukethwe yesisombululo esingu-1080p nesezansi, kuzo zonke izinhlelo ze-Epson ne-JVC, ubuchwepheshe bokushintshashintsha kwe-pixel buphakamisa isithombe (ngamanye amazwi, i-DVD yakho neqoqo le-Blu-ray Disc uzothola ukuthuthukiswa kwemininingwane ngaphezu kweprojekthi ejwayelekile ye-1080p).
Kumele futhi kuboniswe ukuthi uma ubuchwepheshe bePixel Shift buvuliwe, akusebenzi kubuka i-3D. Uma isignali ye-3D engenayo itholakele noma i-Motion Interpolation ivuliwe, iShift noma ukuthuthukiswa kwe-4K kuvaliwe, futhi isithombe esibonisiwe sizoba ngu-1080p.
Izibonelo ze-Epson 4Izimpendulo .
Izibonelo ze-JVC eShift Projectors.
I-Texas Instruments Approach For Projectors DLP
I-Epson ne-JVC yizipulatifomu zeprojekti ezisebenzisa ubuchwepheshe be-LCD, kodwa ukushintshashintsha kwe-pixel shifting kwenzelwe i-platform ye-Texas Instruments DLP iphrojekthi yeprojekthi.
Esikhundleni sokusebenzisa uhlelo lwe-1080p DLP, i-Texas Instruments ihlinzeka nge-chip eqala ngamaphikseli angu-2716x1528 (4.15 million) (okuyinto ephindwe kabili inombolo ye-Epson ne-JVC chips).
Lokho kusho ukuthi lapho inqubo yePixel Shift nokucubungula kwevidiyo okwenziwe kusetshenziswe kwiprojekitha esebenzisa uhlelo lwe-TI, esikhundleni sezingxikedi zamaphikseli angaba yizigidi ezingu-4, iphrojekitha ithumela amaphikseli angu-8.3 wezigidi "ezibukwayo" esikrinini - kabili ngaphezulu I-JVC sika-eShift ne-Epson's 4Ke. Nakuba le nqubo ayifani ncamashi ne-Sony's native 4K, ngoba ayiqali ngamaphikseli angama million ayizigidi ezingu-8.3, ifika ngokubonakalayo esiseduze, ngezindleko ezifaniswa nesistimu esetshenziswa yi-Epson ne-JVC.
Njengoba nje ngezinhlelo ze-Epson ne-JVC, izimpawu ezingenayo zevidiyo ziphakanyisiwe noma zihanjiswe ngokufanele futhi, uma ubuka okuqukethwe kwe-3D, inqubo yePixel Shifting ikhutshaziwe.
I-Optoma yiyokuqala ukusebenzisa uhlelo lwe-TI UHD, olulandelwe ngu-Acer, Benq, i-SIM2, iCasio, ne-Vivitek (hlala ubukele izibuyekezo).
04 ka 05
Indlela Yomdabu: I-Sony Ihamba Yodwa
U-Sony unomkhuba wokuhamba ngendlela yakhe (khumbula i-BETAMAX, i-miniDisc, i-SACD, ne-DAT yamakhasethi alalelwayo?) Futhi benza njalo ekubukeni kwevidiyo engu-4K. Esikhundleni sokusebenzisa indlela yokuguqula i-pixel esebenza kahle, kusukela ekuqaleni u-Sony uye "u-4K wesintu", futhi ubelokhu ekhuluma kakhulu ngakho.
Lokho indlela yokuzalwa isho ukuthi wonke amaphikseli adingekayo ukukhipha isinqumo sesithombe esingu-4K afakwe ku-chip (noma empeleni ama-chips amathathu - owodwa kumbala ngamunye oyinhloko).
Kubalulekile ukuthi uqaphele ukuthi inani le-pixel libalwa kuma-chips a-4K wakwa-Sony empeleni amaphikseli ayizigidi ezingu-8.8 (4096 x 2160), okuyizinga elifanayo elisetshenziswe ku-movie 4K. Lokhu kusho ukuthi konke okuqukethwe komthengi okusekelwe ku-4K (i-Ultra HD Blu-ray, njll ...) uthola ukukhushulwa okuncane kuleyo namba engaphezu kuka-500,000 yamaphikseli.
Noma kunjalo, i-Sony ayisebenzisi amasu wokuguqula amaphikseli ukuphrinta izithombe ezinjenge-4K esibukweni. Kanti futhi, i-1080p (kufaka phakathi i-3D) nemithombo yokuxazulula izixazululo eziphansi iphakanyisiwe "kumkhwalithi wesithombe" we-4K-like.
Inzuzo yendlela ka-Sony, yebo, ukuthi umthengi uthenga iprojekti yevidiyo lapho inani lamaphikseli angokwenyama empeleni kuncane ngaphezu kwe-4K Ultra HD TV.
Ukungahambi kahle kwamaphrojekti ka-4K we-Sony ukuthi kukhona kubiza kakhulu, ngokuqala amanani cishe ngo-R7,8000 (ngo-2017). Engeza intengo yesikrini esifanele, futhi leso sxazululo sibiza kakhulu kunokuthenga isikrini esikhulu 4K Ultra HD TV - kodwa uma ubheka isithombe esingu-85 amasentimitha noma ngaphezulu, futhi ufuna ukuqinisekisa ukuthi uthola i-4K yeqiniso, i-Sony indlela yokufinyelela ngokuqinisekile iyinqumo efiselekayo.
Izibonelo zamaphrojekthi wevidiyo we-Sony 4K
05 ka 05
Okubalulekile
Yiziphi zonke amathumba angenhla ezansi kwaleyo ngqungquthela engu-4K, ngaphandle kohlobo lwendabuko elisetshenziswe ngu-Sony, lusetshenziswe ngokuhlukile kumavidiyo amaningi kunabanye i-TV. Ngenxa yalokho, nakuba kungadingeki ukwazi yonke imininingwane yezobuchwepheshe, lapho uthengisa iprojekti yevidiyo "4K", abathengi badinga ukuqaphela amalebula afana nabomdabu, ama-e-Shift, ukuthuthukiswa okungu-4K (4Ke), kanye nesistimu ye-TI DLP UHD.
Kukhona impikiswano eqhubekayo, enezinselelo zombili zombili, ngokuphathelene nokufaneleka kwephikelli okuguquguqukayo njengengxenye ye-4K yomdabu - uzozwa amagama "4K" "Faux-K", "Pseudo 4K", "4K Lite", ajikijwe nxazonke uma usebenzise ukubuyekezwa kwevidiyo yevidiyo futhi uthenge kumthengisi wakho wendawo.
Ngemva kokubona izithombe ezifakiwe usebenzisa konke okukhethwa kukho ngenhla ngaphezu kweminyaka esuka ku-Sony, Epson, JVC, futhi kamuva nje i-Optoma, ezikhathini eziningi kunzima ukutshela umehluko phakathi kwendlela ngayinye, ngaphandle uma usondela kakhulu esikrinini, zibuka esimweni sokuhlola esilawulwayo lapho ubheka ukuqhathanisa ohlangothini olulodwa lwehlobo ngalunye lweprojekthi ephrintiwe nezinye izici (umbala, umehluko, ukukhishwa okukhanyayo).
U-4K wesintu angase abukeke kancane "ashaya" kuye ngokuthi usayizi weskrini (hlola izikrini amasentimitha angu-120 phezulu), kanye nebanga langempela lokuhlala esibukweni - Noma kunjalo, ukubeka kalula, amehlo akho angakwazi ukuxazulula imininingwane eminingi kuphela - ikakhulukazi ngemifanekiso ehambayo. Engeza iqiniso lokuthi kukhona ukuhlukahluka kokuthi ngamunye wethu ubona kahle kangakanani, ayikho usayizi weskrini ohleliwe noma ibanga lokubuka elizokwenza ukuthi kube khona umehluko ofanayo wokubuka kumbukeli ngamunye.
Ngokwehluka kwezindleko phakathi komdabu (lapho amanani aqala cishe ngo-R7,8000) kanye nokushintshwa kwamaphikseli (lapho amanani aqala khona angaphansi kuka-$ 3,000), futhi nakanjani into okufanele uyihlolisise, ikakhulukazi uma uthola ukuthi okuhlangenwe nakho okubonakalayo kufaniswa.
Ngaphezu kwalokho, khumbula ukuthi ukuxazulula, nakuba kubalulekile, kuyisici esisodwa nje sokuthola ikhwalithi enkulu yesithombe - futhi uthathe indlela yokukhanya , ukukhishwa okukhanyayo , nokukhanya kombala ukucatshangelwa, futhi ungakhohlwa ukuba nesidingo esihle isikrini .
Kubalulekile ukwenza okubhekayo ukucacisa ukuthi yisiphi isixazululo esibonakala kuwe, futhi yikuphi umkhiqizo / imodeli ehambisana nesabelomali sakho.