Isamukeli se-Digital TV
Nigeria DVB-T2
| Uhlobo | DVB-T / T2 H.265 | DVB-T / T2 H.264 | DVB-T | ISDB-T |
| 4 Tuner 4 antenna | DVB-T26540 | DVB-T240 | / | ISDB-T7800 |
| 2 Tuner 2 antenna | DVB-T265 | DVB-T221 | DVB-T7200 | ISDB-T9820 |
| 1 Tuner 1 antenna | / | DVB-T2K | DVB-T7000 | ISDB-T63 |
It is a big deal. Bigger than you imagine when you consider the implications. In case, just in case, you have not paid plenty of attention, digital migration is the transition from analogue TV to digital terrestrial TV broadcasting, which countries around the world are expected to adopt. How did that come about?
amatjhuguluko wedijithali kubandakanya ukudluliswa isignali ithelevishini digital phezu komhlaba wona ube insika ekhaya abamukelayo.
Lapho DSO kwenzeka, umbukeli TV kuyodingeka babe set-top-ibhokisi (NJLL) noma sebenzisa i-TV yezinombolo ukuze ukuthola amasevisi ithelevishini. A-Set-Top Box yilokhu uvame ukubizwa njengomuntu isiqophi semithombo. Ngu yokuzuza Set Top Box ukuthi iyahambisana DVB-T2, isizukulwane sesibili ukusakaza ubuchwepheshe (Analogue isebenzisa DVB-T noma T-1 ezihlukahlukene), noma ngaphandle ukubhaliswa kwenyanga noma ngumuntu digital ithelevishini isethi, umbukeli ithelevishini bazokwazi ukuthola isignali lapho DSO senzeka, kulandela Analogue ukucisha. Lokhu kusho ukuthi obukayo ngeke ukwazi ukubukela Analogue ithelevishini uma yena / yona ongakabi kuthuthwe.
Uma ufuna ukuqhubeka ubuka i-TV lapho DSO senzeka, kuzodingeka ukuthenga Mahhala-to-Air STB / isiqophi semithombo (ukuthenga-isikhathi esisodwa futhi akukho ukuthenga nyangazonke), isethi Uxhumano Digital Ithelevishini noma / isiqophi semithombo pay-TV STB (lokhu iza ukuthenga nyangazonke).
DVB (Digital Isiqophi Broadcasting) oyindinganiso ithelevishini digital ukuthi iye yamukelwa emazweni amaningi e ITU Region 1, lapho Afrika uwela.
DVB-T, esimelela Digital Isiqophi Broadcasting Terrestrial, iyona DVB ejwayelekile yokuqala esikhundleni wuhlelo DVB-T2.
DVB-T2 imele Digital Isiqophi Broadcasting (Okwesibili Generation Terrestrial), uhlelo entsha futhi inikeza inzuzo engcono ukusebenza lobuchwepheshe kanye nekusebenta eliphakeme. DVB-T2 akuyona emuva iyahambisana DVB-T. Kanjalo, DVB-T abamukelayo ayikwazi ukuthola amasignali DVB-T2, futhi kungakusiza DVB-T2 amasignali DVB-T.
Lokhu kusho ukuthi izakhamuzi lamazwe lapho kufuduka kuthiwa ziye izuzwe Juni 2015 umnqamulajuqu, kodwa ku T-1 ubuchwepheshe kuyodingeka ukuthenga DVB-T2 abamukelayo ukuthi ukusekela ejwayelekile DVB-T2.
Ukuze ukhethe isignali ukusakaza digital, umuntu kufanele abe TV digital. Digital TV, ukuthi kuyinto TV ine Sombhalo inbuilt digital. Kodwa uma omunye namanje ine TV Analogue, okuyodingeka uthole umamukeli digital uhlobo ibhokisi set-top, oguqula amasignali kusuka digital ithelevishini ukusakaza kwifomu okungase kubhekwe ku bendabuko Analogue ithelevishini isethi.
Kodwa ingabe lokhu kusho thina manje ukuthi bakhokhe ukuze ukubukela iziteshi siye sathola khulula ngaphansi okusakaza eliwumhlaba?
Kunezinhlobo ezimbili zama-service yezokusakaza amaphakheji emsamo eliwumhlaba: i.e. Mahhala-to-air kanye Pay TV.
Iziteshi Mahhala-to-Air yilezo uthola ngaphandle kokuthi ubhalise noma ukhokhe imali nyangazonke ukuthola. Lezi ziteshi Uzoqhubeka khulula ngisho nangemva kokuba labo abasuka Analogue ukuba kusakata ngetinombolo kubahlali.
Khokha-TV idinga ukuthi ubhalise futhi ukhokhe imali ukuthenga ukubukela iziteshi okufane DStv noma GOtv.
Ngo Analogue okusakaza, isignali idluliselwa njengomnikelo wokuzuliswa okuqhubekayo, ngenkathi ukudluliswa digital kubandakanya ukudluliswa isignali njengomnikelo wokuzuliswa leyehlukene. Ukuze TV digital, isignali kufakwa ikhodi eyisivikelo futhi kungenziwa onomfutho ukuze uvumele iziteshi ezingaphezulu izosakazwa. amatjhuguluko wedijithali inikeza uhla enkulu izinzuzo kuka Analogue.
Ngoba kufike umuntu mumbe, ke kuqinisekisa ikhwalithi engcono ezibukwayo futhi inikeza amasevisi okuningi okufana umsakazo, teletext, amasevisi interactive, imidlalo, futhi ukusekela for the ongaboni-kahle futhi inthanethi.
Ngaphezu kwalokho, ivumela ingqalasizinda-ukwabelana ngokusebenzisa insika isiginali distributor futhi sinikeza namathuba angcono ngaphezulu kukhicitwa kwencukaca yalapha ekhaya, okuyinto liyakuthela ngaphezulu amathuba emisebenzi bokuqukethwe. Ngaleyondlela, kunomthelela nangayiphi ngesilinganiso esincane kuya kwezomnotho nenhlalakahle lamazwe ezifudukayo.
imithombo kusukela:http://allafrica.com/stories/201508032065.html
VCAN inganikeza umkhiqizo Romania DVB-T2 ngezansi:
