I-Ultra HD: Yintoni kwaye kutheni ungayisebenzisi?

ngo kim Ukuhlaziywa: Julayi 9, 2022

I-Ultra HD, eyaziwa ngokuba 4K, ngowona mgangatho wesisombululo omtsha koomabonakude, iikhamera, kunye nezinye izixhobo.

Ngokuphindwe kane inani leepikseli kunesombululo seHD yemveli, i-Ultra HD ibonelela ngomfanekiso obukhali kakhulu, onombala ophuculweyo kunye nomahluko.

Oku kwenza i-Ultra HD ibe sisisombululo esifanelekileyo sokudlala imidlalo, ukubukela iimuvi, kunye nokubukela iifoto kunye neevidiyo.

Kweli nqaku, siza kuxubusha iingenelo kunye nokungalunganga kwe-Ultra HD, kunye nendlela enokuphucula ngayo amava akho okubukela.

Inkcazo ye-Ultra HD

I-Ultra High Definition, okanye i-UHD emfutshane, luphuhliso lwamva nje kwisisombululo semifanekiso kamabonwakude kunye nomgangatho. I-UHD ibamba ukuya kuthi ga kane ukusonjululwa kwe-HD esemgangathweni, okukhokelela kwimifanekiso ebukhali evela kwisikrini ngokucaca okuphezulu kunye nokuqina. I-UHD ikwabonelela ngombala obanzi we-gamut kunesiqhelo HD okanye iifomathi zeNgcaciso eMgangatho (SD) kunye nesantya esiphezulu sesakhelo sokudlala okuhamba kakuhle. Iinkcukacha ezongeziweyo ziya kutsala ababukeli ngeendlela ezingazange zibonwe ngaphambili, zenza amava okubukela amakhulu kunobomi.

Kwisisombululo sayo esipheleleyo, i-UHD isebenzisa i-3840 x 2160pixels. Oko kuqikelelwa ngokuphindwe kabini ukuthe tyaba (iiphikseli ezili-1024) kunye nokuthe nkqo (iiphikseli ezingama-768) zeHD esebenzisa i-1920 x 1080 pixels. Oku kukhokelela kumfanekiso we-4K kuba ineepikseli ezi-4x ngaphezulu kune-HD eqhelekileyo. Xa kuthelekiswa ne-HD, i-Ultra High Definition ngokucacileyo inobutyebi bomfanekiso obugqwesileyo kunye nokucaca kunye namandla ombala obanzi we-gamut ukwenza imibala ejonge ngakumbi yendalo kwiscreen ngaphandle kwe-pixelation ephawulekayo okanye imfiliba ngexesha lentshukumo.

Ultra HD Resolution

I-Ultra HD (UHD) sisisombululo se-3840 x 2160 pixels, esiphindwe kane ngaphezu kwesisombululo se-Full HD ye-1920 x 1080 pixels. IiTV ze-UHD ziye zanda kakhulu kule minyaka imbalwa idlulileyo, njengoko zibonelela ngomgangatho obukhali wemifanekiso xa kuthelekiswa neeTV zeHD ezigcweleyo. Eli nqaku liza kugubungela iingenelo zesisombululo se-Ultra HD kwaye ujonge into ekufuneka uyazi xa uthenga i-UHD TV.

4K Resolution

Isisombululo se-4K, esikwabizwa ngokuba yi-UHD okanye i-Ultra HD, yifomathi yevidiyo enikezela ngokuphindwe kane iinkcukacha ze-1080p Full HD. Eli nqanaba leenkcukacha livumela umbukeli ukuba agxininise kwiinkcukacha ezincinci ezibonakalayo ngokucaca okukhulu kunye nokubukhali.

Isisombululo se-Ultra HD sibonelela nge-3840 x 2160 pixels kwiscreen xa kuthelekiswa ne-1920 x 1080 yomfanekiso we-Full HD. Ukucaca komfanekiso we-4K ngokuqhelekileyo kufumaneka kwiiTV ezinkulu kunye neziboniso kunye neefomathi eziphezulu zedijithali zedijithali ezifana neekhamera ze-4K, ii-smartphones kunye neenkonzo zokusasaza ezifana ne-Netflix kunye ne-YouTube. Ngokwamkelwa kwemithombo yeendaba ye-4K isanda kakhulu kwimigca yemveliso ye-elektroniki yabathengi kunye nababoneleli bomxholo wedijithali, le fomati yesisombululo esongeziweyo idala amava okubukela okuntywilayo kubasebenzisi bayo abanemifanekiso eqaqambileyo kunye nemibala eqaqambileyo.

8K Resolution

Isisombululo se-Ultra HD (UHD), ekwaziwa njengesisombululo se-8K, sinikezela ngeepikseli eziphindwe kane kunesisombululo se-4K UHD. Isisombululo se-8K sineepikseli ezili-16 ngaphezulu kwe-Full HD isisombululo, okukhokelela kubukhali obungenakulinganiswa kunye nokucaca kwemifanekiso. Ukusetyenziswa kweteknoloji ye-8K kwandisa amava okubukela ngokubonelela ngeenkcukacha ezingenakulinganiswa kunye nokucaca kwemifanekiso. Ngesisombululo se-8K, ababukeli banokonwabela umfanekiso obukhali ngakumbi kwaye ocacileyo kwiisayizi ezinkulu zesikrini ezinobunzulu obukhulu kunye nokuthungwa xa kuthelekiswa ne-4K okanye i-Full HD izikrini.

Ukuze ufumane elona nqanaba liphezulu lomgangatho wemifanekiso yomfanekiso we-Ultra HD, ababukeli baya kufuna isiboniso esinesisombululo se-8K kunye nesantya sohlaziyo esifana ne-LG OLED 65” Iklasi ye-E7 Series 4K HDR Smart TV – OLED65E7P okanye i-Sony BRAVIA XBR75X850D 75″ iklasi (74.5) ″ idayigi). Ezi ziboniso zinenkumbulo eyaneleyo yokubonisa iipikseli ezizizigidi ezisibhozo kumphezulu wazo wonke ukuya kuthi ga kumashumi amathandathu efps (iifreyimu ngesekhondi). Kubathandi bemidlalo abanqwenela ukonwabela izihloko zabo abazithandayo kwizikrini ezinkulu ezinokwenzeka ngaphandle kokubeka esichengeni ukusebenza kunye nokubonwayo, i-8K yindlela yokuhamba!

Ultra HD Technology

I-Ultra HD, eyaziwa ngokuba yi-UHD okanye i-4K, ngumgangatho omtsha wesisombululo sevidiyo esiphindwe kabini inani leepikseli njengesisombululo se-HD se-1080p. I-Ultra HD yifomati yevidiyo yedijithali enesisombululo se-3840 nge-2160 pixels, kwaye inika amava okujonga okubukhali ngenxa yenani elikhulu leepikseli. Esi sihloko siya kungena nzulu kwi-teknoloji emva kwe-Ultra HD kunye neenzuzo zokujonga umxholo kwesi sigqibo.

Uluhlu oluphezulu lweDynamic (HDR)

Uluhlu oluPhezulu lweDynamic (HDR) bubuchwephesha obufumaneka kwiithelevishini ze-Ultra HD ezibonelela ngoluhlu olubanzi lokuchasa kunye namanqanaba ombala kunosasazo lwe-UHD oluqhelekileyo, olukhokelela kwimifanekiso efana nobomi kunye neenkcukacha ezinkulu. I-HDR ivumela iiTV ukuba zivelise abamhlophe abamhlophe, kunye namanqanaba amnyama anzulu, ukudala inkangeleko yendalo. Ukukhanya okwandisiweyo kukwathetha ukuba imibala ibonakala icace ngakumbi, iphucula nawuphi na umfanekiso okanye ividiyo eveliswe kwisibonisi.

IHDR yenziwa yenzeka ngokusetyenziswa kwezinto ezimbini—iTV ngokwayo kunye nomxholo obukelweyo. Ii-TV ezenziwe nge-HDR kufuneka zikwazi ukwamkela kwaye ziqhube idatha evela kwisignali yevidiyo ye-HDR ngaphambi kokuba iboniswe ngokuchanekileyo kwisikrini. Ukongeza ekubeni neseti ehambelana ne-HDR, ababukeli kufuneka baqinisekise ukuba banokufikelela kumxholo we-UHD oxhasa i-High Dynamic Range (HDR). Oku kunokuba ziinkonzo zokusasaza ezifana neNetflix okanye iAmazon Prime Video; imidiya ebonakalayo efana ne-UHD Blu-rays okanye iiDVD; okanye usasazo lwesiqulatho esivela kubaboneleli beTV abafana nentambo okanye itshaneli zesathelayithi.

IGamu yoMbala oBanzi (WCG)

I-Ultra HD (eyaziwa ngokuba yi-4K okanye i-UHD) iteknoloji inikeza umgangatho omtsha womgangatho womfanekiso, obandakanya ukulungiswa okuphuculweyo kunye nombala wombala. Ngokukodwa, i-Ultra HD yandisa uluhlu lwemibala enokuthi isetyenziswe kumfanekiso ngamnye ukuvelisa amava okujonga okukumgangatho ophezulu. Oku kwenziwa ngeteknoloji eyaziwa ngokuba yiWide Color Gamut (WCG).

I-WCG isebenzisa iziboniso zale mihla ezinomthamo owandisiweyo woluhlu lwemibala. Ivumela uluhlu olubanzi lwemibala ukuba lufumaneke kumalungu abaphulaphuli ukuba basebenzise kwindawo yokubonisa idijithali. I-gamut yombala wesiphelo esisezantsi osetyenziswa kwiNgcaciso ePhakamileyo kunye neeTV zeNkcazo ePhezulu zikhawulelwe ngokugquma kwebhanti yabo ebomvu, eluhlaza, eluhlaza okwesibhakabhaka (RGB). Ngoncedo lwe-WCG, i-Ultra HD iyakwazi ukuvelisa ngaphezulu kwesigidi esinye sendibaniselwano ngexabiso ngalinye elisisiseko le-RGB kwaye iyakwazi ukuvelisa imibala eqaqambe kakhulu kunangaphambili.

Ngokuphucula ukusebenza kombala ngokubanzi, iinkqubo zosasazo ziya kujongeka zidlamkile kwaye zintywiliselwe kwi-Ultra HD TV kunenkcazo eqhelekileyo okanye inkcazo ephezulu yeTV ukuba zixhasa ubuchwephesha obuncinci - uninzi lweeTV ze-UHD eziphezulu ziya kuzifaka ngokuzenzekelayo kwii-TV zabo. uluhlu lweenkcukacha. Ukongeza, iintlobo ezahlukeneyo zomxholo onje ngemidlalo yevidiyo kunye neemuvi ziya kubonakala ziqaqambile kwaye zibambisekile ngenxa yobuninzi bazo obutsha bemibala ekhoyo nanini na iWide Color Gamut ifumaneka kwiscreen.

Ireyithi ephezulu yeSakhelo (HFR)

Umgangatho weSakhelo esiPhakamileyo (HFR) yinxalenye ephambili ye-Ultra HDTV yokujonga amava. I-HFR ivumela imifanekiso egudileyo enciphisa ukufiphala kwentshukumo kunye nokuhambisa imifanekiso ecacileyo yekristale. Xa kudityaniswe nesisombululo esongeziweyo kunye neteknoloji yombala ephucukileyo, oku kubonelela ngamava okubukela angazange abonwe ngaphambili.

Amazinga e-HFR aqhele ukusuka kwi-30 ukuya kwi-120 izakhelo ngesekhondi (fps). Oku kunokukhokelela kupopayi olutyibilikayo kunye nemifanekiso efana nobomi bosasazo lwezemidlalo xa kuthelekiswa nosasazo lwesiqhelo lwe-30 fps yeTV. Umgangatho ophezulu wefreyimu yeTV ibonelela ngeenkcukacha ezithe kratya, ukuncipha kwexesha lokulinda intshukumo, kunye nokungacaci kwentshukumo ekhokelela kukuphuculwa komgangatho wokubonwayo. Xa ujonga umxholo we-Ultra HD ngesixhobo esihambelanayo njengesidlali se-Blu-ray okanye inkonzo yokusasaza, i-HFR inceda ukuqinisekisa ukuba ufumana okuninzi kwiscreen sakho se-Ultra HDTV.

Izibonelelo ze-Ultra HD

I-Ultra HD, okanye i-4K, ikhawuleza ibe ngumgangatho kwividiyo ephezulu. Ibonelela ngomfanekiso obukhali, oneenkcukacha ngakumbi kune-HD eqhelekileyo kwaye yinto ekufuneka ubenayo kubadali bomxholo onzulu. Eli nqaku liza kuphonononga iingenelo ezahlukeneyo ze-Ultra HD, ezifana nokuchaneka kombala ophuculweyo, isisombululo esiphuculweyo, kunye nokwahluka okuphuculweyo. Makhe sijonge ezinye zeenzuzo ze-Ultra HD.

Ukuphuculwa koMgangatho Wemifanekiso

I-Ultra HD, ekwabizwa ngokuba yi-4K okanye i-UHD, ibonelela ngeyona mifanekiso ibukhali negqwesileyo ekhoyo namhlanje. Inesisombululo esiphindwe kane sikamabonwakude we-HD oqhelekileyo, ebonelela ngeenkcukacha ezithe kratya kunye nemifanekiso efana nobomi bendalo. Oku kuthetha ukuba iimuvi kunye nemiboniso bhanyabhanya efakwe kwi-Ultra HD ibonakala icace ngakumbi kwaye idlamkile ngakumbi koomabonakude be-Ultra HD xa ithelekiswa nomxholo oqhelekileyo weHD. Ngoluhlu olubanzi lwesisombululo sombala kuneyona mibala iqhelekileyo yeTV, oomabonakude be-Ultra HD babonelela ngokuhlelwa ngcono kwimithunzi yombala eneengile zokujonga ezibanzi-ukuphucula kakhulu amava okubukela kuwo nawuphi na umboniso weTV okanye imuvi. Ngokuqinisekileyo, konke oku kuguqulela kumava angcono okubukela kunye neenkcukacha ezibukhali kunye nomgangatho womfanekiso ophuculweyo xa kuthelekiswa nezinye iiTV.

Ukuntywiliselwa okwandisiweyo

I-Ultra HD (eyaziwa ngokuba yi-UHD okanye i-4K) luphuculo olungaphezulu kwefomathi yenkcazo ephezulu. Inika ngokuphindwe kane izisombululo zeHD eqhelekileyo, inika amanqanaba amangalisayo eenkcukacha ezikuvumela ukuba ubone ngokucacileyo. Imibala engqingqwa, iinkcukacha ezintsonkothileyo, kunye nokucaca okuphuculweyo kwi-Ultra HD inokufikelela kwinqanaba eliphezulu lokwenyani kwaye wenze amava akho okubukela antywiliselwe ngakumbi.

Itekhnoloji ye-Ultra HD ixhasa izisombululo ukuya kuthi ga kwi-4096 x 2160 pixels, ibonelela ngesisombululo esingcono kakhulu kune-Full HD eqhelekileyo kwiipikseli ze-1920 x 1080. Ngoluhlu olubanzi lwemibala enokwenzeka, ibonelela ngenkqubo yombala wendalo enomtsalane ngokwaneleyo ukuba ibizwe ngokuba "ngumbala wokwenyani". Ngenxa yokuba umabonwakude unokubonisa imifanekiso emininzi ngaxeshanye, i-UHD ikunika umfanekiso obonakala usondele kakhulu kwinto yokwenyani-ingakumbi apho imiboniso bhanyabhanya yezemidlalo nentshukumo ichaphazelekayo.

Ngaphandle kwesisombululo esikhulu, i-Ultra High Definition TV ikwabonelela ngamazinga okuhlaziya ukuya kuthi ga kwi-120 Hz xa kuthelekiswa ne-60 Hz eqhelekileyo enceda xa ubukele iifilimu ezinemifanekiso eshukumayo njengoko kukho inguqu egudileyo phakathi kweefreyimu ezinciphisa ukufiphala okubonwayo kunye nemiphetho ejijekileyo. Ukongeza, iiTV ezine-Ultra HD zibonelela ngee-engile zokujonga ezibanzi kubabukeli abaninzi ukuze wonke umntu ajonge umfanekiso ocacileyo nokuba uhlala phi ngokunxulumene neseti kamabonwakude ngokwayo.

Umgangatho ongcono weaudio

I-Ultra HD ibonelela ngokwenziwa komsindo okuphuculweyo xa kuthelekiswa neHD eqhelekileyo. Isebenza ngokusabalalisa i-audio kwinani elikhulu lamatshaneli, inika isandi esicacileyo esintywilayo kunye neenkcukacha. Oku kwandiswa kwentetho yomsindo kuvumela iinkcukacha ezingaphezulu kumculo kunye nencoko yababini, ukubonelela ngamava angcono kakhulu. I-Ultra HD yenza kube lula ukubeka izinto kunye nabalinganiswa kwiindawo ezithile kwi-soundscape, kunye nokubonelela ngokuchaneka okungcono kokudlala kwamajelo amaninzi. Zonke ezi mpawu zinegalelo kumava okonwabisa ngakumbi xa ubukele iimuvi okanye udlala imidlalo yevidiyo.

isiphelo

Ukuqukumbela, i-Ultra HD sisiboniso esivela ngokukhawuleza kunye netekhnoloji yabathengi emiselwe ukuhambisa izisombululo eziphuculweyo kunye nemifanekiso kunye neevidiyo ezibonakala zifana nobomi. Ngelixa kukho iintlobo ezininzi ezahlukeneyo ze-UHD kwimarike, zonke zibonelela ngophuculo ngaphezulu kosombululo lwabo olusezantsi, okuvumela abathengi ukuba bafumane isisombululo esiphezulu esifana ngokusondeleyo noko kubonwa ngamehlo ethu kubomi bemihla ngemihla. Ingaba ujonge ukuphucula umabonwakude wakho okanye ubeke iliso, okanye ucinga ngezixhobo zokusasaza umxholo wedijithali ezifana nezo zibonelelwe yiNetflix, isixhobo se-Ultra HD sinokukunika amava antywilayo.

Molo, ndinguKim, umama kunye nomthandi we-stop-motion onemvelaphi kwindalo yemidiya kunye nophuhliso lwewebhu. Ndinothando olukhulu lokuzoba kunye noopopayi, kwaye ngoku ndintywila kuqala kwihlabathi le-stop-motion. Ngebhlog yam, ndabelana nawe ngokufunda kwam.