Yeka ukuthi u-720p no-1080i bafana kanjani futhi bahlukile
I-720p ne-1080i kokubili amafomethi wokuxazulula ividiyo ephezulu, kodwa lapho ukuphela kufinyelela khona. Kukhona umehluko omkhulu phakathi kokubili okungathinta i-TV oyithengayo kanye nesipiliyoni sakho sokubuka i-TV.
- I-720p ingamaphikseli angu- 1,280 aboniswe kwesikrini ngokuzungezile namaphikseli angu-720 aboniswe phansi kwesikrini ngokuqondile. Lokhu kuveza imigqa engama-720 enezingqimba noma imigqa ye-pixel ethunyelwe ku-TV noma enye idivayisi yokubonisa kancane kancane , noma umugqa ngamunye uthunyelwe ngokulandela enye (yilapho i "p" ivela khona). Isithombe sonke (imigqa engu-720 noma imigqa ye-pixel) ithunyelwa njalo nge-60 yesibili (noma kabili njalo ngemva kwe-30 yesibili). Inombolo ephelele yamaphikseli aboniswe kukho konke ukukhanya kwesikrini se-720p ngu-921 600 (okungaphansi kwe-megapixel engama-1 kumigomo yekhamera yedijithali).
- I-1080i imelela amaphikseli angu-1,920 ahlelwe ngokuqondile futhi amaphikseli angu-1,080 ahlelwe ngokuqondile. Lokhu kuveza imigqa eyi-1,080 enezingqimba (imigqa yamaphikseli), ithunyelwe ku-TV ngokuhlukile (okubizwa ngokuthi isignali ephakathi). Ngamanye amazwi, yonke imigqa engavamile noma imigqa yephikseli ithunyelwa ku-TV kuqala, ilandelwa yizo zonke imigqa noma imigqa yepikseli.Lokhu kusho ukuthi u-1080i, njengoba usuke ephakathi, uthumela kuphela imigqa engu-540 (noma ingxenye yenkcazelo) njalo ngamashumi ama-60 okwesibili, nazo zonke imininingwane ezithunyelwe njalo nge-30 yesibili. Phezulu, i-1080i ikhiqiza imininingwane engaphezulu kuka-720p, kodwa njengoba imininingwane eyengeziwe ithunyelwa njalo ku-1/30 kweyesibili, esikhundleni se-1/60 yesibili, izinto ezihamba ngokusheshisa zizobonisa izinto ezincane zokuphambana - okungabonakala kubonakale njengemiphetho ejijiwe noma umphumela owenziwe kancane.
- Inombolo ephelele yamaphikseli aqukethe isignali ephelele ye-1080i, uma imigqa ephakathi noma imigqa ihlangene, ihlanganisa 2,073,600. Nokho, khumbula ukuthi amaphikseli angu-1,036,800 kuphela athunyelwa njalo nge-60 yesibili.
Nakuba inani lamaphikseli we-720p noma i-1080i yokubukwa kwesikrini lihlala lihambisana njalo nosayizi weskrini, ubukhulu besibuko sinquma inani lamaphikseli ngamasentimitha .
720p, 1080i, ne-TV yakho
Ukusakazwa kwe-HDTV kusuka esiteshini sakho se-TV, ikhebula noma isevisi yesathelayithi kungu-1080i (njenge-CBS, NBC, WB) noma 720p (njenge-FOX, ABC, ESPN).
Noma kunjalo, nakuba i-720p ne-1080i yizilinganiso ezimbili ezisemqoka zokusakaza izimpawu ze-HDTV, lokho akusho ukuthi ubona lezo zigqibo kusikrini sakho se-HDTV.
Kubalulekile ukuqaphela ukuthi imigqa engu- 1080p (imigqa engu-1920 x 1080 noma imigqa yephikseli ishintshwe kancane kancane) ayisetshenziswanga ukusakazwa kwe-TV, kodwa isetshenziswe ngabanikezeli bekhebula / i-satellite, izinsizakalo zokusakaza okuqukethwe kwe-intanethi, futhi-ke, i-1080p yinxenye izinga lefomethi ye- Blu-ray Disc .
Futhi, kufanele kuboniswe ukuthi iningi lamabhayisikobho abhalwe njengezingqikithi ze-720p empeleni inezixazululo ze-pixel yangokwezifiso ezingu-1366x768, okuyisisekelo esingu-768p. Noma kunjalo, zivame ukukhangiswa njengezingu-720p ze-TV. Ungalokothi udidekile, lawa maqoqo azokwamukela izimpawu ezingu-720p no-1080i. Okushiwo yi-TV yinkqubo ( isilinganiso ) noma yisiphi isinqumo esingenayo kwisinqumo sayo sokubonisa ukuphakanyiswa kwepikseli ka-1366x768.
Enye into ebalulekile ukuveza ukuthi kusukela i- LCD , i- OLED , i- Plasma , ne- DLP TV ( ama- Plasma ne-DLP TV asusiwe, kodwa amaningi asetshenziswa) angabonisa kuphela izithombe ezithwetshulwa, azikwazi ukubonisa isignali ye-1080i.
Kulezo zimo, uma isignali engu-1080i ithola ukuthi i-TV kufanele isule isithombe esingu-1080i ku-720p noma ku-768p (uma kuyi-720p noma i-TV ye-768p), i- 1080p (uma i-TV ye-1080p) , noma i- 4K (uma i-4K Ultra HD TV) .
Ngenxa yalokho, ikhwalithi yesithombe oyibona esibukweni kuxhomeke ekusebenzeni kahle kweprosesa yevidiyo ye-TV - amanye ama-TV enza kangcono kunabanye. Uma ngabe iprosesa ye-TV yenza umsebenzi omuhle, isithombe sizobonisa amaphethelo abushelelezi futhi azikho izinto ezibonakalayo zomthombo wombili we-720p no-1080i.
Kodwa-ke, isibonakaliso esiningi kakhulu sokuthi umseshi akenzi umsebenzi omuhle ukubuka noma yimiphi imiphetho enamathele ezintweni ezisesithombeni. Lokhu kuzobonakala nakakhulu kumasignali angu-1080i angenayo njengoba inqubo ye-TV idingida ukuxazulula isinqumo kuze kufike ku-1080p noma phansi ku-720p (noma u-768p), kodwa futhi kufanele wenze umsebenzi obizwa ngokuthi "deinterlacing".
Ukukhipha i-Deinterlacing kudinga ukuthi i-processor ye-TV ihlanganise imigqa engavamile ngisho nemigqa noma i-pixel yesithombe esingaphakathi esivela phakathi kuka-1080i ibe isithombe esisodwa esithuthukayo ukuze siboniswe njalo nge-60 yesibili. Abanye abacubungula benza lokhu kahle, kanti abanye abenzi.
Okubalulekile
Yiziphi lezi zinombolo nezinqubo okusho kuwe ukuthi akuyona into enjalo njenge-LCD, i-OLED, i-Plasma, noma i-DLP TV ye-1080i. Uma i-flat panel ye-TV ikhangiswa njenge-TV "1080i", kusho ukuthi ngenkathi ingafaka isignali engu-1080i - kufanele isilinganise isithombe esingu-1080i ku-720p ukuze sibonise isikrini. Ama-TV angu-1080p, ngakolunye uhlangothi, amemezelwe njenge-1080p noma i-HD TV ephelele nanoma yiziphi izimpawu ezingenayo ezingu-720p noma ezingu-1080i zifinyelelwe ku-1080p ukuze kuboniswe isikrini.
Kungakhathaliseki ukuthi ufaka isignali engu-1080i ku- 720p noma i-TV ye-1080p , lokho okuphelela ekuboneni esikrinini kuwumphumela wezici eziningi ngaphezu kokuxazulula, kufaka phakathi izinga lokuvuselela isikrini / ukunyakaza kokunyakaza , ukucubungula umbala, ukuphambene, ukukhanya, umsindo wevidiyo wangemuva izinto zokufakelwa , nokukhuliswa kwevidiyo nokucubungula.
Ngaphezu kwalokho, ngokuhambisana nokwethulwa kwe-4K Ultra HD TV, ukutholakala kwama-TV angu-1080p no-720p emakethe kuye kwehla. Ngaphandle kwezimbalwa ezimbalwa, ama-TV angu-720p ahanjiswe ekubukeni ubukhulu bezinkinobho ngamasentimitha angama-32 futhi amancane - empeleni, ngeke nje uthole inombolo ekhulayo yama-TV angu-1080p kuleso sikrini noma encane, kodwa ne-4K Ultra HD TV ukuthola okungabizi kakhulu, inani lama-TV angu-1080p kuma-inch angu-40-intshi namakhulu amakhulu weskrini nawo ayencane kakhulu.