Cishe cishe wonke umuntu uye wasuka ezinkampanini ze-analog ze-standard definition ngokuqondene namathelevishini aphezulu aphezulu kakhulu. Banobubanzi obuyi-16: 9, obufana nokubukeka kwesikrini se-movie yaseshashalazini, futhi zitholakala ngezikrini eziningi zokuxazulula izixazululo, ezihlaba umxhwele ngokucacile, umbala, nemininingwane yazo. Isixazululo akungabazeki ukuthi i-HDTV iyinhloko enkulu yokuthengisa.
Uyini umehluko Ezinqumweni?
Ngokuvamile, ukuphakanyiswa kwe-TV kunesiphakamiso, kungcono isithombe nokuphakamisa umthamo wamanani. Ngakho-ke, uma uthengisa i-TV, kufanele wazi ukuthi isinqumo sisho ukuthini nokuthi yini oyitholayo ngemali yakho.
Izinqumo ze-HDTV ezingabizi ziyi-720p, i-1080i ne-1080p-inombolo imelela inani lemigqa eyenza isithombe, futhi le ncwadi ichaza uhlobo lokuskena olusetshenziswa yi-TV ukubonisa isithombe: okuqhubekayo noma okuhamba phambili. Izixazululo zendaba ngoba imigqa eminingi isho isithombe esingcono. Lona umqondo ofanayo nezithombe zedijithali nokuthi kanjani i-dpi inquma ikhwalithi yokuphrinta.
- I-720p ine-resolution yesithombe yama-pixel angu-1280 ngamayelana angu-720. I-720p yayiyisinqumo sokuqala se-HDTV esitholakalayo. Isatholakali kepha ayiyona ethandwa njengakuqala ukuthi manje amanani wehla kuma-TV angu-1080. Ngokuqhathanisa, i-TV ye-720p inezixazululo kabili zesithombe se-analog TV.
- I-1080i inezixazululo zamaphikseli angu-1920 ngo-1080 imigqa enezingqimba. Kodwa-ke, i-interlaced ngakho imigqa idwetshwe esikrinini emidlalweni emibili yemigqa engu-540 ngayinye. Ikhwalithi yesithombe inhle ngokuqukethwe okuhamba kancane kodwa hhayi njengokufiselekayo ezintweni ezihamba ngokushesha. I-1080i yayisiyinto ejwayelekile kuma-HDTV kodwa ayikho. Ikhwalithi yayo ayikho kangcono kakhulu kunezingxoxo ze-720p.
- I-1080p inesinqumo se-1920 ngamaphikseli angu-1080, futhi i-scan eqhubekela phambili, engaxhunywanga, ngakho inikeza isithombe ngamaphikseli ayizigidi ezingu-2.07 million. Lokhu okwamanje kuyisimo esihle se-TV esithengisa futhi sinikeza isithombe esihle kakhulu samanothi amathathu ashiwo lapha.
Iyiphi Ifomethi ye-HDTV Engcono-720p, 1080i noma i-1080p?
Ukucabanga ukuthi zonke lezi zakhiwo ze-TV ezintathu zisezingeni lakho lamanani, i- TV ye-1080p iyona ekhethiwe kakhulu . I-720p ne-1080i yikhokhnoloji endala ehambisa kancane kancane amathelevishini okuxazulula okuphezulu. Ihlinzeka ngesinqumo esihle kakhulu nokubukwa okuhlangenwe nakho, futhi kukhona okuqukethwe okungaphezulu kuka-1080p ngaphandle lapho. Noma kunjalo, uma uthenga i-TV enamasentimitha angu-32 noma amancane, ngeke ubone umehluko omkhulu phakathi kwezithombe kuma-TV angu-1080p no-720p.
Ikusasa lamaThrikhithi aphezulu
Ubuchwepheshe abuyimi, ngakho uzobona amanye ama-TV aphezulu ekuxazululeni emakethe. Ama-TV angu-4K aphumayo manje, futhi ngeke kube yisikhathi ngaphambi kokuthi amasethi angu-8K atholakale. Ngaphandle kokubekwa eceleni kwetheknoloji kubalulekile kuwe-futhi unayo isabelomali esivulekile-UHD (izincazelo eziphezulu kakhulu) amasethingi akuzona ukuthenga okungcono kakhulu ngalesi sikhathi ngoba akukho okuqukethwe okuningi okukhona okuzuzisa ukuphakama kwabo phezulu izinqumo.
- 4K UHD : Kukhona amathelevishini angu- 4K ngaphandle manje, kodwa ayabiza. Lezi zithelevishini zinesinqumo sama-pixels angu-3840 ngemigqa engu-2160.
- 8K UHD : Ukulandela ngqo ezithende ze-4K, 8K UHD kufanele kutholakale maduzane. Ayikho okuqukethwe okwamanje etholakalayo kuma-TV angu-8K. Ama-TV angu-8K anikeza amaphikseli angu-7680 anamangalisa ngemigqa engu-4320.
Mayelana ne-Wide-Screen Advantage
Okunye ukuthuthukiswa kwama- HDTV ngaphezu kwama-TV analobubububububanzi obubanzi kunesikrini esibukweni. Isithombe esikhulu-skrini sihle ngamehlo ethu-sibona izithombe ezibububanzi obuphezulu bekrini kuncono kunesakhiwo esidala sesithombe se-analog TV. Amehlo ethu abukeka kangcono ukusuka kwesobunxele kuya kwesokudla kunokuba kusuka phezulu kuze kube phansi. Isikrini esiphezulu sibonisa okuningi kwesenzo esikrinini, esikuhle kakhulu kwezemidlalo nama-movie. Wonke ama-HDTV anesilinganiso sobubanzi beskrini, ngakho-ke lokhu kuthuthukiswa akusho ukuthi iyiphi i-TV engcono kakhulu.