Ukukhetha i-TV yomndeni kuwumsebenzi onzima, ngoba uthola isikhathi eside. Ngaphandle kwezinto ezingenakunyakaziswa emakethe yetheknoloji yethelevishini, kunezinkampani eziningana ezahlukene ezihlinzeka ngezindlela ezihlukahlukene. Namuhla i-4k TV, eyayiqala emhlabeni jikelele yenkampani yaseJapane i-NHK ngo-2004, iya ngokuya ithandwa.
Yiziphi i-TV ezisekela i-4k?
Abaningi bethu, bakhetha ukuthenga i-TV entsha, bafuna ukuthenga idivayisi eliphezulu kakhulu. Muva nje, isikrini esihle kunazo zonke i-HD ephelele nge-resolution ye-1920x1080 yamaphikseli. Ekuqaleni kwekhulu lama-21, ubuchwepheshe obusunguliwe be-4k noma i-Ultra buvele, njengoba bubizwa futhi. Manje, ukubuka okuqukethwe kwekhaya kulokhu, udinga ama-TV angu-4K, akhiqizwa ngabakhiqizi bezwe abanjengo:
- I-Samsung;
- I-LG;
- I-Sony;
- I-Panasonic;
- Philips.
Ama-4k TV - okungcono?
Kulabo abakhetha ukukhetha i-4k TV, kufanele uhlole izinzuzo zalezi zithombe. Isithombe, esiboniswa kusikrini se-Ultra HD, sinemininingwane ecacile futhi sicacile, futhi imibala igcwele futhi ijule kakhulu ngokufaniswa ne-Full HD, okusiza ukudala umphumela omkhulu wokuba khona kombukeli. Ukuguqulwa okuncane komthunzi owodwa kwesinye esikrinini se-TV yama-4k yesimanje kuvumela umbukeli ukuba acabangele imibala ehlukahlukene. Amamodeli aphezulu kakhulu kunawo wonke ayaziwa ngamazwe omhlaba.
Ama-Matrix 4k TVs
Emakethe yamanje yamatekisi angu-4k, izinhlobo ezimbili zamatrices zilawula: i-VA ne-IPS, enezinzuzo ezilandelayo:
- I-VA (i-Vertical Alignment) i-matrix iqondanisa isithombe ngokuqondile. Ama-crystals ayo ahlanzekile, atholakala ngokuqondile engxenyeni yesikrini se-TV, ahlinzeke ngemibala egcwele. Ama-crystals ahamba ngamahhala abangela ukuthi isithombe asiphikisiwe uma shintsha i-angle yokubuka. Ama-TV anamatrikhi anjalo ahle kakhulu emakamelweni ane-lighting light.
- I-IPS (In-Plane Switching) matrix - kuwo wonke ama-crystals ajikeleza ngesikhathi esifanayo futhi esezindiza efanayo ehambisana nesibuko. Inikeza i-angle enkulu yokubuka, incazelo ephezulu nokukhanya, ama-shadow shades. Kodwa-ke, i-TV enezinqumo ezine-4k, ene-matrix enjalo, iyabiza kakhulu kunamanye amamodeli.
Ukulungiswa kwesikrini se-TV 4k
Ukunquma ukuthenga i-4k TV, udinga ukwazi ukuthi isinqumo (inombolo yamaphikseli noma amaphikseli akha isithombe) kusuka kumodeli oyikhethile. Amadivayisi we-TV wesitulo esisha esingu-4k anesandiso sesikrini esingu-3840x2160, esinezikhathi ezine eziphakeme kunamamodeli aphelele e-FullHD. Njengoba amaphikseli kulesi sikrini angaphezulu kakhulu, futhi ubukhulu bawo buncane kakhulu, sibona isithombe esicacile futhi esicacile esinemifanekiso ecacile yazo zonke izinto.
I-TV enesinqumo esingu-4k inenani eliphansi lesikrini se-16: 9. Kukholelwa ukuthi ukwedlula isinqumo, ngcono iTV. Nokho, lokhu akusiyo njalo indaba. Uma isibonakaliso esibuthakathaka sitholwa kwi-TV ephezulu yokuxazulula, isibonelo, emoyeni we-TV, ngakho-ke kudinga ukucubungula okukhethekile okuyinkimbinkimbi, futhi isithombe esikrinini singase sibe sibi. Ngakho-ke, uma uthenga i-TV ye-4k, qiniseka ukuthi uhlola ikhwalithi yokuthola isitolo yesignali.
Linganisa ama-4k ama-TV
Uma ufuna ukuthola ukuthi iyiphi i-4k TV ongayikhetha, ungayenza ngokutadisha ukulinganisa kwamamodeli avela kubakhiqizi abahlukene:
- I-LG 43UH603V - inguqulo yesabelomali kakhulu, eneskrini sekhwalithi engu-43 intshi kanye nesistimu ye-Smart TV . Kuhle ngokudlala amafayela wevidiyo anzima.
- I-Samsung - UE50KU6000K - I-TV engabizi nge-diagonal enkulu, enokukhanya okufanayo kwesikrini sonke nokulungiswa kokukhanya okuzenzakalelayo.
- I-LG OLED55C6V - lo ochwepheshe bezithombe balingisa omunye owakuthandwa kakhulu kulabo abasebenzisa ubuchwepheshe be-HDR. Isikrini esiphenduliwe sale TV sandisa umphumela wokuba khona.
- I-Philips 49PUS7150 - isibonelo esihle sekhaya lasekhaya nge-3D ephezulu yezokubonisa.
- I-SONY KD-65ZD9BU TV - ibonisa ngokuphelele ekamelweni elikhanyayo, ngenkathi enekhwalithi yesithombe esiphezulu.
Kukude kangakanani ukubuka ama-4k TV?
Ukuze unqume ukuthi yikuphi ibanga lokubuka i-4k TV, udinga ukunquma ukuthi uwubeka kuphi nokuthi izilaleli zizohlala kuphi. Kuye ngalolu banga futhi ungakhetha i-diagonal efanele ye-TV, ezobe ikhululekile futhi iphephile ukubuka ukusakaza. Ngesikhathi esifanayo, ochwepheshe bathi inkulu isikrini, ibanga elide ukusuka kulo kuya kumbukeli. Ukubukwa ngokuqondile kwe-TV ene-81 cm ebangeni elingu-1.27 m kucatshangelwa. Uma uhlala phansi, ngeke ubone imininingwane encane, futhi usondelane - isithombe sizobe sesidla.
Ukusetha i-4k TV
Noma iyiphi i-TV entsha kudingeka ihlelwe. Ukuze wenze lokhu, udinga ukusebenzisa ibhuku lokufundisa eliza nale model. Ama-TV amaningi ane-4k ukwesekwa anezimiso eziningana zokuhlela okulungiselelwe, ezingasetshenziswa:
- ukufudumala;
- ipholile;
- ukulinganisa;
- enamandla.
Noma kunjalo, imodi yokugcina ayinconywa ukuyisebenzisa, ngoba inqobe imibala ekulimazeni imininingwane. Uhlu lwezilungiselelo lubandakanya izinkomba ezinjalo:
- Ukungafani yizinga elidingekayo lombala omhlophe. Kungcono ukulungisa umehluko wesithombe sefu: okokuqala usibeke esiphezulu, bese wehlisa izinga ukuze ufeze okudingekayo.
- Ukukhanya kungumuthi omnyama okufanele ube ngu-50%. Kulula ukulungisa ukukhanya kunoma yisiphi isithombe esimnyama.
- Umbala - efakwe esithombeni nge-palette ekhanyayo. Bese uye esihlalweni ngobuso bomuntu bese uthola umbala wemvelo ngokwengeziwe.
- Ubukhali - akufanele kube ngaphezu kuka-30%. Ukuze uyivumelanise, khetha isithombe ngezingqamuzana ezibushelelezi futhi ukwandise leli xabiso kuze kube i-halo iqala nxazonke.
Ihlola i-4k TV
Lapho uthenga i-4k TV, udinga ukuyihlola:
- Amaphakheji nokusetha okuphelele - ukutholakala kwezintambo, iphaneli yokulawula, amafilimu okuzivikela, imibhalo.
- Hlola amaphikseli aphukile we-TV 4k enziwe kanje: siqala ukulanda izithombe zokuhlola kwi-flash flash drive, ukuxhuma ku-TV futhi ufunde ngokucophelela isithombe esiphelele. Amaphikseli aphukile angatholakala ku-screen monophonic ngendlela yamaphuzu ahlukile.
- Ukuhlolwa kokufaniswa kwe-backlight - akumele kube khona ama-gradients avelayo kusikrini somzimba. Amaphuzu avelele emkhakheni weskrini ahlolwe egumbini elimnyama, futhi amathrekhi okungafani okubonakalayo - esizinda sangemuva.
- Ukuhlola i-TV ye-grayscale kwenziwa ngokuzenzekelayo ngesithombe se-gradient. Kulesi simo, ukuguqulwa kwe-shades akufanele kube bukhali kakhulu noma kufinyeleleke.