I-4K Ultra HD ilapha: Yintoni kunye noko kuthetha ukuthini ukubukela iTV
I-4K ibhekisela kwisinye sezigqibo ezibini ezicacileyo eziphezulu: ii-pixels ezingama-3840 x 2160 okanye iipekseli ezingama-4096 x 2160. 4K izihlandlo ezine ze-pixel isisombululo, okanye isisombululo sesibini (2160p), sama- pixels ka- 1080p (1920 x 1080) . Ezinye izisombululo eziphezulu ezicacileyo ezisetyenziswayo zi- 720p kunye ne-1080i .
Isisombululo se-4K sisetyenzisiwe kwi-digital digital cinema usebenzisa i-4096 x 2160, apho iifrimu ezininzi zitshuntshiswa okanye zixutywe kwi-4K ngokunyuka kwi-2K (1998 x 1080 kumlinganiselo we-1.85: 1 okanye u-2048 x 858 kumlinganiselo we-2.35: 1) .
Ngaphantsi kwamabhalana alo asemthethweni abathengi, i-Ultra HD kunye ne-UHD, i-4K iqulunqwe kakuhle kwi-theater yasekhaya, usebenzisa i-pixel ye-3840 x 2160 ye-pixel, ngokubakho kwinani elikhulayo labamkeli bemidlalo yasesekhaya abane-4K ye-pass-through amandla, kunye neeTV, iiprojekti zevidiyo , kunye nezixhobo zendalo, njengabashicileli bemidiya, abadlali be-Blu-ray abadlali be-Ultra HD kunye nabadlali be-Blu-ray Disc abaqeshisa i-4K upscaling.
Ukongeza kwi-Ultra HD okanye i-UHD, i-4K iphinde ibhekiswe kwisetyenziselwano sobuchwepheshe njengo-4K x 2K, iNkcazo ephezulu ye-Ultra, i-4K Ultra High Definition, i-Quad High Definition, i-Quad Resolution, i-Quad ephakamileyo Inkcazo, i-QFHD, iD, i-2160p
Kutheni 4K?
Yintoni eyenza i-4K ephawulekayo kukuba kusetyenziswa ubukhulu beeskrini ze-TV kunye neeprojekti zevidiyo, inikeza imifanekiso eninzi eneenkcukacha ezisezantsi kunye nee-pixel ezingaphantsi kwe-1080p. I-1080p ibonakala iphezulu ukuya kuma-intshi angama-65, kwaye iyakwazi ukujonga kakuhle kwiiskrini ezinkulu ezinkrini, kodwa i-4K ingakwazi ukunikela umfanekiso okhangeleka kangcono njengoko ubukhulu bezkrini buqhubeka nokwandisa.
I-4K iphunyezwa njani
Kukho ezininzi ze-4K Ultra HD TV ezikhoyo , kunye nenani elincinci le- 4K ne-4K-video-enhanced projectors .
Umxholo we-4K ufumaneka kwimithombo emininzi yokuhambisa, njenge-Netflix, i-Vudu, ne-Amazon, kwakunye nefomathi ye - Ultra HD Blu-ray ne- abadlali . Kubalulekile ukuba uqaphele ukuba nangona kuninzi abadlali be-Blu-ray disc ephakamileyo ye-1080p Blu-ray disc ukuya kwi-4K, kuphela i-Ultra HD ye-Blu-ray Disc player idlala iidiski eziqukethe isisombululo se-4K.
Kwi-cable / satellite yesahluko se-equation, i- DirecTV inako ukuhambisa kokubili kokubhaliweyo kwaye iphile nge-4K ngomxholo kubathengi bayo (ukuba ngaba bobabini ibhokisi le-satellite elihambelanayo kwaye babhalisele kwisicwangciso esifanelekileyo). Kulo cala, izinto ziyimisebenzi, kodwa akukho nto ikhoyo.
Nangona kunjalo, ukusasazwa kweTV kwi-intanethi yilapho izinto zigqithisekile. Ukuhanjiswa kwe-TV ye-4K kusasaweni ehlolwayo kunye neSouth Korea ekhokela phambili, elandelwa yi-US Nangona kunjalo, esinye isithintelo esikhulu kukuba iziseko zesekhompyutheni ezifunekayo ayihambelani ne-HDTV yokusasaza inkqubo.
Ukufumana iinkcukacha ezingakumbi malunga nenkqubela phambili yokusasazwa kwe-TV ye-4K, jonga kwinqaku lethu: ATSC 3.0 - Isinyathelo esilandelayo Kwi-TV yokusasazwa .
Yiyiphi i-4K Eyona nto ibhekisela kubathengi
Ukufumaneka okwandayo kwe-4K kunika abathengi indlela yokubonisa imifanekiso ebonakalayo yevidiyo kwiinkqubo ezinkulu zekrini, kwaye kunokunciphisa kakhulu ababukeli ukuba babone nayiphi na isakhiwo se pixel ebonakalayo kwiskrini ngaphandle kokuba uzibeke uqobo kakhulu. Oku kuthetha nemida elula kunye nobunzulu. Xa kudibaniswa neqondo lokuvuselela i-screen, i-4K inokukwazi ukuhambisa ubunzulu obuninzi njenge-3D - ngaphandle kwesidingo seglasi.
Ukuphunyezwa kwe-Ultra HD akenzi i- 720p okanye i- TV ye- 1080p engapheliyo (nangona, njenge-4K Ultra TV yokuthengiswa kweentengiso kunye namaxabiso athile, ngaphantsi kwee-TV ze-720p kunye ne-1080p), kwaye i-infrastructure ye-HDTV yokusasazwa kweziko ayiyi kushiywa nayiphi na ixesha kungekudala, njengoko i-ATSC 3.0 iqalisa ukufumaneka ukusetyenziswa kokudluliselwa komxholo.
Enyanisweni, njengokuba kuguquliwe kwi-DTV ka-2009, kunokufika umhla kunye nexesha elithile apho i-4K ingaba ngumgangatho ochanekileyo wokusasazwa kweTV, kodwa oko kuthetha ukuba kuninzi izibonelelo zeziseko ezifunekayo.
Funda kabanzi malunga nokuphunyezwa kwe-4K kwi-disc, ukusasaza, kunye nokusasazwa kwinqonga kwiqabane lethu: Into enyayo Ukujonga isigqibo se-4K kwi-Ultra Ultra HD TV
Ukuba uvakalelwa ukuba ulungele ukungena kwi-4K, khangela uluhlu lwethu lwee-Best 4K Ultra HD TV .
Ngaphandle kwe-4K ne-Ultra HD
Yintoni ehleli ngaphezu kwe 4K? 8K? I-8K izihlandlo ezili-16 kwisigqibo se-1080p . Iimpawu zee-8K zeTV ziboniswe kwiminyaka emininzi edluleyo kwaye kukho iindlebe ezi-8K ezisetyenzisiweyo kwizicelo zobungcali, kodwa ukhetho olunokuthenga abathengi lusekho iindlela ezikude-mhlawumbi kwi-2020 ukuya ku-2025.
Isixazululo seVideo vs Megapixels
Nantsi indlela yokuthelekisa isisombululo esingu-1080p, 4K kunye no-8K kwisisombululo sepikelel ye-digital ncam
- I-1080p (1920x1080) yi-2.1 megapixels.
- 4K (3840 x 2160 okanye 4096 x 2160) malunga ne-8.5 megapixels.
- Kuphela nge-8K (7680 x 4320 iipekseli - 4320p) ungena kwi-resolution ye-pixel yesisombululo se-digital digital professional still cameras - 33.2 megapixels. Unokuthi uthabathe iifoto ezinesisombululo esiphezulu kunokuba ungabonwa kwiskrini sakho seTV xa ufika kumxholo wevidiyo.
Umbala, Uluhlu, kunye Naphezulu
Ngokuqinisekileyo, konke oku ngasentla kuthiwa, nguwe omele ukwaneliswe oko ubona kwiskrini sakho seTV - isisombululo sinye inxalenye, kodwa izinto ezifana nokucutshungulwa kwevidiyo kunye nokuphakanyiswa kwekhwalithi, ukulungelelanisa umbala, impendulo yamanqanaba omnyama, Ngokwahlukileyo, ubungakanani bekrini, kunye nokuba umboniso weTV ukhangeleka njani kwigumbi lakho konke kufuneka kuthathelwe ingqalelo.
Ukujonga ngokucacileyo indlela ulwahlulo kunye nombala ophuculweyo ngayo, kunye nesisombululo se-4K, khangela iincwadana zamanye amazwe: HDR: i-Dolby Vision, i-HDR10, i-HLG - Kuthetha ukuthini ababukeli beTV kunye ne- Perception Perception kunye ne-TV yakho .