Miyezo ya TV 1080i ndi 1080p: mawonekedwe ndi zosiyana

Muyezo wa kanema wawayilesi wa HD, ndiko kuti, kusamvana kwa 1080, kumalimbikitsa kuwonetsa zithunzi zapamwamba ndipo tsopano ndi yotchuka kwambiri. Komabe, chisankho ichi chikhoza kukhala ndi mfundo ziwiri: 1080 “p” ndi “i”, kusiyana kwawo ndi chiyani ndipo kuli bwino?

1080i kuwonongeka muyezo

Muyezo womwe watchulidwawo udapangidwa kuti ulandire chizindikiro cha digito cha TV pazithunzi zokhala ndi gawo la 16×9. Kutalika kwa chinsalu kuyenera kukhala ma pixel a 1080 ndipo m’lifupi kuyenera kukhala ma pixel a 1920. Mtunduwu umatha kuwulutsa makanema mumitundu yosiyanasiyana, kuphatikiza Full HD. Oyang’anira okhala ndi chiganizochi ali ndi mlingo wotsitsimula wa 50 kapena 60 Hz. Pali kuthekera kodzipangira nokha muzokonda zapa TV. Chithunzicho chimapangidwa m’magawo awiri. Choyamba, mizere imawoneka pazenera (2, 4, 6, …), ndiyeno yosamvetseka. Munda uliwonse umawalitsa pafupifupi maulendo 30 mu sekondi imodzi. Masomphenya aumunthu sangathe kuzindikira mawonekedwe osafanana a mafelemu a theka chifukwa cha mphamvu zazikulu.

Njira yowonetsera chithunzi imakhudza ubwino wa chithunzicho, ndipo zimakhala zosamveka bwino, nthawi zina zimayambitsa kugwedezeka, kugwedezeka, kusokoneza chithunzicho. Mbali imeneyi ndi drawback waukulu wa TV, ndi kuwonongeka muyezo umene ndi 1080i.

Mwa makhalidwe abwino a zipangizo ndi 1080i kuwonongeka muyezo, munthu akhoza kuona mtengo wake otsika. Kuphatikiza apo, ndiukadaulo uwu, pali kuchepetsedwa kawiri kwa mtsinje wa data wamavidiyo ndi njira yopepuka yozungulira. M’malo mwake, mawonekedwe ake ndi ma pixel 1920×540.

1080p muyeso wowola

Muyezo uwu ulibe kusiyana kwa matrix resolution. Komabe, kuwonjezera pamitengo yotsitsimula wamba, monga mulingo wa 1080i wowola, palinso chithandizo cha 24 Hz.

Iyi ndi njira yapa kanema wawayilesi yomwe ikupita patsogolo. Ndi icho, chithunzicho chimafufuzidwa kwathunthu, ndipo mizere ikuwonetsedwa motsatizana. 1080p imagwiritsidwanso ntchito mu HDTV.

Kwa wogwiritsa ntchito, kuwonera TV mu 1080p kumatengedwa ngati njira yokondedwa chifukwa chapamwamba komanso kumveka bwino kwa chithunzicho. Kujambula kopita patsogolo kulibe zovuta za 1080i. Tekinolojeyi ndi yovuta kwambiri, yomwe imakhudza mtengo wa ma TV ndi chisankho ichi.

Kodi pali kusiyana kotani pakati pa 1080p ndi 1080i miyezo: kusiyana, ubwino ndi kuipa

Pambuyo kuphunzira makhalidwe luso la 1080i ndi 1080p mfundo, mukhoza kudziwa kusiyana kwakukulu:

• muyezo wa 1080i wowola umalekanitsa chimango chilichonse ndikutulutsa mzere ndi mzere mofanana ndi ma TV a analogi, pamene 1080p imachita izi motsatira ndondomeko popanda kugwiritsa ntchito zowonongeka;
• ngati muyang’anitsitsa, 1080p ili ndi chithunzi chomveka bwino, ndipo kayendetsedwe kake kamapezeka popanda zojambula;
• ma TV aposachedwa amapanga makonzedwe owonjezera a chizindikiro cha TV cha 1080i, chifukwa chake chithunzicho chimasinthidwa, ndipo chizindikiro chokhala ndi chidule cha “p” sichifunikira konse;
• 1080i ili ndi zofunikira zochepa za bandwidth kuposa 1080p;
• Chithunzi cha 1080 “p” cha HD sichimalola kutayika kwamtundu pakukweza, ndipo zolemba zogwiritsa ntchito mawonekedwe ndi kukula kwake ndizosavuta kuwerenga.

Mutha kuwona kusiyana pakati pa miyezo iwiriyi powonera kanema wotsatirawa (tcherani khutu ku mtundu wa chithunzichi mukasuntha): https://youtu.be/j29b7B6CSNM?t=2

Zomwe zili bwino – funso lalikulu

Chifukwa cha kuyerekezera miyezo, tingazindikire kuti 1080p ili ndi phindu lalikulu pa 1080i: chithunzicho chimasinthidwa mobwerezabwereza, kufotokozera kwake kudzakhala pamlingo wapamwamba, zomwe zidzathetse mavuto owonjezera pa ziwalo za masomphenya. Ubwino woterewu udzakhudza mtengo wa TV wokhala ndi chiganizo chofanana ndi chiwonetsero chazithunzi: zidzakhala zodula kuposa zida za 1080i. Ma TV okhala ndi chithunzi chozungulira chimodzi amathandizira mafayilo ena omwe si amtundu uliwonse. Zida zomwe zili ndi 1080p zowonongeka zimatha kugwiranso ntchito pamaso pa 1080i muyezo. Pankhaniyi, muyenera kungoyika chilolezochi pazokonda. Kugwiritsa ntchito zida molingana ndi miyezo iwiri kunatheka chifukwa ndizotheka kupanga masanjidwe a chimango chimodzi kukhala awiri, koma kuchita motsatira dongosolo (kuwonjezera mafelemu awiri owerengedwa motsatizana, osati nthawi imodzi) – ayi. Mwaukadaulo, kutembenuza theka la chimango kukhala chimango chonse sikutheka.

Zomwe zili bwino 1080p kapena 1080i, zolumikizirana kapena zopita patsogolo:

https://youtu.be/QQcbkdopDEc

Pakadali pano, si njira zambiri zapa TV zomwe zimawulutsidwa mu 1080p. Komabe, posachedwapa ntchitoyi idzapezeka kwambiri, chithunzi cha mayendedwe owulutsa chidzakhala chapamwamba kwambiri.

Kusanthula kwapang’onopang’ono (1080p) kuli ndi mwayi wowonekera pamasewera apakanema ndi mapulogalamu omwe amagwiritsidwa ntchito popanga zida zamakanema. Mukawonera makanema ndi makanema apa TV, 1080i ikhoza kukhala yokwanira. Poganizira mphamvu ndi zofooka zomwe zafotokozedwazo, wogwiritsa ntchitoyo azitha kusankha TV yoyenera.