I-4K Ultra HD ilapha: Kuyini nokuthi kusho ukuthini ukubuka kwakho kwe-TV
I-4K ibhekisela kwesinye sezinqumo ezimbili eziphezulu zokucacisa: amaphikseli angu-3840 x 2160 noma amaphikseli angu-4096 x 2160. I-4K ixazululwe ngokuphindaphindiwe kwe-pixel, noma kabili ukulungiswa komugqa (2160p), wama- pixels angu-1080p (1920 x 1080) . Ezinye izinqumo eziphezulu zezincazelo ezisetshenziswayo ziyi- 720p no-1080i .
Isixazululo se-4K sisetshenziselwa ukukhangisa nge-digital digital cinema usebenzisa inketho ye-4096 x 2160, lapho amafilimu amaningi adutshulwa khona noma ahlelwe ku-4K ngokuphakama kusuka ku-2K (1998 x 1080 ye- ratio ye-1.85: 1 noma i-2048 x 858 ye-2.35: 1 ububanzi bezinga) .
Ngaphansi kwamalebula alo asemthethweni abathengi, i-Ultra HD ne-UHD, i-4K isungulwe kahle ekwakheni yaseshashalazini, usebenzisa inketho ye-pixel ka-3840 x 2160, ngezo zombili izinombolo ezikhulayo zamukeli bemidlalo yaseshashalazini ezine-4K ukudlula kanye / noma i-4K video upscaling amandla, kanye nama-TV, ama- video projectors , namadivaysi omthombo, njengabashicileli bezindaba, abadlali be-Blu-ray abadlali be-Ultra HD, nabadlali be-Blu-ray Disc abasebenzisa ukuphakama kwe-4K.
Ngaphezu kwe-Ultra HD noma i-UHD, i-4K iphinde ikhonjiswe kuzilungiselelo zobuchwepheshe njengo-4K x 2K, incazelo ephakeme ye-Ultra, i-4K Ultra High Definition, i-Quad High Definition, i-Quad Resolution, i-Quad Full High Definition, i-QFHD, i-UD, i-2160p
Kungani 4K?
Okwenza 4K okuphawulekayo ukuthi ngokusetshenziswa kwamasayizi ombukiso we-TV amakhulu nakakhulu namaphrojekti wevidiyo, inikeza izithombe eziningi ezicacile futhi ezincane kakhulu ezibonakalayo kunezingu-1080p. I-1080p ibheka okuhle kufikela kumasentimitha angaba ngu-65, futhi ingahle ibheke okuhle kumasayizi we-screen amakhulu, kodwa i-4K ingakwazi ukuletha isithombe esibheke kangcono njengoba ubukhulu beskrini buqhubeka nokwanda.
I-4K isetshenziswa kanjani
Kunezintambo eziningi ze-4K Ultra HD TV etholakalayo , kanye nenani elincane lamaphrosesa wevidiyo ayenziwe nge- 4K no-4K .
Okuqukethwe okungu-4K kuyatholakala emithonjeni eminingi yokusakaza, njenge-Netflix, i-Vudu, ne-Amazon, kanye nefomethi ye - Ultra HD Blu-ray Disc nabadlali . Kubalulekile ukuqaphela ukuthi nakuba kunezinhlayiya eziningi ze-Blu-ray disc ukuthi i-upscale i-1080p Blu-ray disc ejwayelekile ye-4K, isidlali se-Ultra HD Blu-ray kuphela singadlala ama-disc aqukethe isinqumo se-4K.
Kuyingxenye yekhebula / satellite ye-equation, i- DirecTV ikwazi ukuletha kokubili okuqukethwe okubhalwe ngaphambilini bese kuphila nge-satellite kubasebenzisi bayo (uma nje bobabili ibhokisi lesathelaythi elihambisanayo bese bhalisela uhlelo olufanele). Ehlangothini lwekhebula, izinto zikhona emisebenzini, kodwa akukho lutho olungakahle okwamanje.
Kodwa-ke, ukusakazwa kwe-TV ngaphezu kwe-yilapho izinto zihamba khona ngempela. Ukusakazwa kwe-4K kwe-TV kusasenkingeni ehlolwayo neNingizimu Korea ehola phambili, elandelwa yi-US Nokho, isithiyo esikhulu esikhulu ukuthi ingqalasizinda ye-electronic edingekayo ayihambisani nesistimu yokusakaza ye-HDTV yamanje.
Ukuze uthole imininingwane eyengeziwe ngokuqhubekayo kokusakazwa kwe-TV ye-4K, bheka ku-athikili yethu: I- ATSC 3.0 - Isinyathelo Esilandelayo Ekusakazweni kwe-TV .
Yiziphi ngempela 4K ezibhekisela kubathengi
Ukutholakala okukhulayo kwe-4K kuhlinzeka abathengi isithombe esihle sokubonisa isithombe sezinhlelo zokusebenza ezinkulu ze-screen, futhi kunganciphisa kakhulu ikhono lababukeli ukubona noma iyiphi isakhiwo se-pixel ebonakalayo esikrinini ngaphandle kokuthi uzibeke usondelene kakhulu. Lokhu kusho ngisho nemiphetho ejulile nokujula. Uma kuhlanganiswe namazinga okuvuselela okubukwa kwesikrini, i-4K inekhono lokuletha ukujula okuningi njenge-3D - ngaphandle kwesidingo sezibuko.
Ukuqaliswa kwe-Ultra HD akukwenzi kube ne- 720p noma i-1080p TV engasebenzi (nakuba, njengokuthengiswa kwe-4K Ultra HD TV nokuncipha kwamanye amazwe, kunconywa ama-TV angu-720p no-1080p), futhi ingqalasizinda ye-HDTV yokusakazwa kwe-TV izokwenziwa ungashiywa noma nini ngokushesha, njengoba nje i-ATSC 3.0 iqala ukutholakala ukusetshenziswa kokudluliselwa kokuqukethwe.
Yiqiniso, njengalokhu ngenguquko ye-DTV ka-2009, kungase kufike usuku nesikhathi lapho kukhona khona 4K engase ibe yizinga elizenzakalelayo lokusakaza i-TV, kodwa lokhu kusho ukuthi kuningi okudingeka kwenziwe ingqalasizinda.
Funda kabanzi mayelana nokuqaliswa kwe-4K kuwo wonke ama-disc, ukusakaza, nokusakaza amapulatifomu esihlokweni sethu somngane: Okudingayo Ukubona Isinqumo se-4K Ku-An Ultra HD TV
Uma uzizwa ukuthi usulungele ukwenza i-jump 4K, hlola uhlu lwethu olusebenzayo lwe-Best 4K Ultra HD TV .
Ngaphandle kwe-4K ne-Ultra HD
Yini elele ngaphezu kwe 4K? Kuthiwani ngo-8K? 8K izikhathi ezingu-16 isinqumo se-1080p . Ama-TV amaningana angu-8K aboniswe eminyakeni embalwa eyedlule futhi kukhona abahloli abangu-8K abasetshenziselwa izinhlelo zokusebenza zobuchwepheshe, kodwa izinketho ezingathengi kubathengi namanje ngezindlela ezikude - mhlawumbe phakathi kwesikhathi se-2020 kuya ku-2025.
Ukuxazulula kwevidiyo vs Megapixel
Nakhu ukuthi ungaqhathanisa kanjani isinqumo se-1080p, 4K no-8K kwisinqumo se-pixel ngisho nedijithali enenani lentengo yedijithali namanje amakhamera:
- I-1080p (1920x1080) yi-2.1 megapixels.
- I-4K (3840 x 2160 noma i-4096 x 2160) ingama-megapixel angu-8.5.
- Kuphela ngamaphikseli angu-8K (7680 x 4320 - 4320p) ungena ebangeni lokuxazulula i-pixel ye-professional digital digital namanje amakhamera - ama-megapixel angu-33.2. Kungenzeka ukuthi uthatha izithombe ngokuxazulula okuningi kunakho ongakubona kusikrini sakho se-TV uma kuziwa kokuqukethwe kwevidiyo.
Umbala, Ukungafani, nokuningi
Yiqiniso, konke okushiwo ngenhla kuthiwa, nguwe okudingeka ukwaneliswe ngalokho okubonayo esikrinini sakho se-TV - isinqumo yingxenye eyodwa, kodwa izici ezifana nokucubungulwa kwevidiyo nokuphakanyiswa kwekhwalithi, ukuhambisana kombala, impendulo yezinga elimnyama, ukuphambene, usayizi weskrini, ngisho nokuthi i-TV ibonakala kanjani egumbini lakho konke okudingeka kudingeke kuthathwe.
Ukuze ubuke ngokuningiliziwe ukuthi umehluko kanjani nombala okwenziwa ngcono, kanye nesinqumo se-4K, hlola izihloko zethu zomngane: i- HDR: i-Dolby Vision, i-HDR10, i-HLG - Okushiwo Ababukeli be-TV nombukiso weMbala ne-TV yakho .