I-720p kunye ne-1080i Yayifana njani na eyahlukileyo
I-720p ne-1080i zombini ifom ecacileyo yokucacisa iividiyo, kodwa ke apho ukufana kufuma. Kukho umahluko omkhulu phakathi kwezi zimbini ezinokuchaphazela i-TV oyithengayo kunye namava akho okubukela iTV.
- I-720p yimaphikseli angu-1,280 aboniswe kwinqanaba elisezantsi kunye neeplayseli ezingu-720 eziboniswe phantsi kwesikrini ngokuzenzekelayo. Oku kuvelisa imizila engama-720 ejikelezayo okanye imizila yepikseli ethunyelwe kwiTV okanye enye idivaysi yesiboniso ngokuqhubekayo , okanye umgca ngamnye uthumela ngokulandela enye (apho i "p" ivela khona). Umfanekiso wonke (imizila engama-720 okanye imigqa yepikseli) ithunyelwa rhoqo nge-60 yesibini (okanye kabini kwi-30 yesibini). Inani elipheleleyo leepekseli eziboniswe kwi-720p yeskrini yonqakwana ngu-921,600 (ngaphantsi kwe-1 megapixel kumagama ekhamera yedijithali).
- I-1080i ibonisa iipekseli eziyi-1,920 ezilungiselelwe ngokuzenzekelayo kunye neepekseli eziyi-1,080 zilungiselelwe. Oku kuvelisa imigca engama-1,080 engqamaniso (imigqa yepikelel), ithunyelwe kwiTV ngokuthe ngenye indlela (ebizwa ngokuba ngumqondiso ophakathi). Ngamanye amagama, yonke imigca engavaliyo okanye imigqa yepikseli ithunyelwa kwi-TV yokuqala, ilandelwa yiyo yonke imigca okanye imigqa yepikseli. Oku kuthetha ukuba i-1080i, ekubeni ihamba phakathi, ithumela imizila engama-540 (okanye isiqingatha kwenkcazelo) lwesibini, kunye nazo zonke iinkcukacha ezithunyelwa rhoqo nge-30 yesibini. Emhlabeni, i-1080i ivelisa iinkcukacha ezingaphezulu kwe-720p, kodwa ekubeni iinkcukacha ezongeziweyo zithunyelwa yonke i-1/30 yesibini, ngaphezu kweyoku-1/60 yesibini, izinto ezihamba ngokukhawuleza ziza kubonisa izinto ezincinane zokupakisha-ezinokubonakala zikhangeleke njengemiphetho ejikiweyo okanye impembelelo encinane.
- Inani elipheleleyo leepekseli eziqulethwe kwisigxina esipheleleyo esingu-1080i, xa zombini imigca okanye imigqa edibeneyo ihlanganisiwe, i-2,073,600. Nangona kunjalo, gcinani engqondweni ukuba ngama-pixels angama-1,036,800 kuphela athunyelwa rhoqo nge-60 yesibini.
Nangona inani leepekseli ze-720p okanye i-1080i yokubonisa isikrini lihlala lihlala lijongene nobukhulu beskrini, ubukhulu besikrini libeka inani lamaphikseli nge intshi .
720p, 1080i, kunye neTV yakho
Ukusasazwa kwe-HDTV kwisiteshi sakho seTV, ikhebula, okanye isevisi ye-satellites abayi-1080i (njenge-CBS, NBC, WB) okanye 720p (njengeFOX, ABC, ESPN).
Nangona kunjalo, nangona i-720p kunye ne-1080i yimiqathango ebalulekileyo yokusasaza i-HDTV, oko akuthethi ukuba usibona ezo zigqibo kwi-screen yakho ye-HDTV.
Kubalulekile ukuqaphela ukuba imigca ye- 1080p (i-1920 x 1080 imigca okanye iipikseli elandelwayo ngokuqhubekayo) isetyenziselwa ukusasazwa kweTV, kodwa isetyenziswe ngabanikezeli bekhebula / i-satellite, iinkonzo ze-intanethi yokusasazwa kwe-intanethi kwaye, ngokuqinisekileyo, i-1080p yinxalenye umgangatho wefayili ye-Blu-ray .
Kwakhona, kufuneka kubonakaliswe ukuba ezininzi iiTV ezibhalwa njenge-720p TV zineziphumo zokusombulula i-pixel ye-pixel ye-1366x768, eyiyo eyi-768p. Nangona kunjalo, zivame ukupapashwa njengee-TV ze-720p. Musa ukudideka, oku kusetyenziswa bonke baya kwamkela iimpawu ze-720p kunye ne-1080i. Oko iT TV enokuyenza yinkqubo ( isilinganisi ) nasiphi isisombululo esingenayo kwisigqibo sokubonisa isibonakaliso se-pixel esingu-1366x768.
Enye into ebalulekileyo ukubonisa ukuba i- LCD , i- OLED , i- Plasma kunye ne- DLP TV (i-Plasma kunye ne-DLP yeTV zikhutshiwe, kodwa ezininzi zisasetyenziswa) ziyakwazi ukubonisa imifanekiso eqhubekayo, kwaye ayikwazi ukubonisa isibonakaliso sama-1080i.
Kuloo meko, ukuba isalathisi esingu-1080i ifunyenwe i-TV ikulinganisa umfanekiso we-1080i ukuya ku-720p okanye kwi-768p (ukuba i-720p okanye i-TV ye-768p), i- 1080p (ukuba i-TV ye-1080p) , okanye i- 4K (ukuba i-4K Ultra HD TV) .
Ngenxa yoko, umgangatho womfanekiso owubonayo kwesikrini kuxhomekeke kwindlela umculi wevidiyo weTV esebenza ngayo - ezinye iiTV zizenza ngcono kunezinye. Ukuba umqhubi weTV unomsebenzi omuhle, umfanekiso uya kubonakalisa umgca ogqithiseleyo kwaye awunayo i-artifacts ebonakalayo kumthombo we-720p kunye no-1080i wokufaka.
Nangona kunjalo, uphawu olugqithisileyo lokuba umprojekti akenzi umsebenzi omhle kukuba ukhangele nayiphi na imiphetho ejikelezayo kwizinto ezisemfanekisweni. Oku kuya kubonakala ngakumbi kwiimpawu ezingenayo ezingama-1080i njengoko umprojekthi weTV efuna ukulinganisa isisombululo ukuya kwi-1080p okanye phantsi ukuya ku-720p (okanye i-768p), kodwa kwakhona kufuneka enze umsebenzi othiwa "deinterlacing".
I-Deinterlacing idinga ukuba umqhubi weTV udibanise imigca engavaliyo kunye nemigca okanye iipekseli ze-1080i engenazo zangaphakathi esesithombeni kwisimo esifanayo sokubonakalisa zonke i-60 yesibini. Abanye abaprojekthi benza oku kakuhle, kwaye abanye abayithandi.
Ngaphantsi
Ziziphi zonke iinombolo kunye neenkqubo ezibhekiselele kuwe kukuba akukho into enjenge-1080i yeLCD, i-OLED, iPlasma, okanye i-DLP TV. Ukuba i-panel panel ye-TV ipapashwa njenge-TV "1080i", ithetha ukuba ngelixa ingenayo isalathisi esingu-1080i - kufuneka isilinganise umfanekiso we-1080i ukuya ku-720p ukubonisa isikrini. I-TV ye-1080p, ngakolunye uhlangothi, ipapashwa njenge-1080p okanye ii-HD ze-HD ezipheleleyo kunye naziphi na iimpawu ezingenayo ezingama-720p okanye ezili-1080i ziye zafakwa kwi-1080p yokubonisa isikrini.
Ingaba ukufaka isalathisi esingu-1080i kwi- 720p okanye kwi-TV ye-1080p , okokugqibela ekuboneni kwesikrini kuyisiphumo sezinto ezininzi ukongeza kwisisombululo, kubandakanywa izinga lokuvuselela iiskrini / ukunyuswa kwenkqubela , ukucubungula umbala, ukukhathala, ukukhanya, isandi sevidiyo yangemuva kunye iimpahla , kunye nevidiyo kunye nokucwangciswa.
Ukongeza, ngokuhambisana nokuqaliswa kwe-4K Ultra HD TV, ukufumaneka kwee-1080p kunye ne-720p TV kwimarike kuye kwehla. Ngaphandle kwemibandela embalwa, ii-TV ze-720p ziye zafakwa kwisikrini sobukhulu obungama-intshi ezingama-32 kwaye zincinci - enyanisweni, awuzukufumana kuphela inani elikhulayo lamaTV ka-1080p kweso sikrini okanye encinci, kodwa kunye ne-4K Ultra HD TV ukufumana imali ephantsi, inani le-TV ye-1080p kuma-intshi angama-intshi angama-40 kunye nobukhulu besikrini.