Digital TV mugamuchiri
Nigeria DVB-T2
| mhando | DVB-T / T2 H.265 | DVB-T / T2 H.264 | DVB-T | ISDB-T |
| 4 Tuner 4 kanyanga | DVB-T26540 | DVB-T240 | / | ISDB-T7800 |
| 2 Tuner 2 kanyanga | DVB-T265 | DVB-T221 | DVB-T7200 | ISDB-T9820 |
| 1 Tuner 1 kanyanga | / | DVB-T2K | DVB-T7000 | ISDB-T63 |
Zviri hombe. Ihuru kupfuura iwe fungidzira paunofunga zvazvinoreva. Zvikazo, chete kana, hamuna kamari yakawanda hanya, digitaalinen vaitamira kune kuchinja kubva analogue TV kusvikira digitaalinen pano TV nhepfenyuro, iyo nyika pasi rose vanotarisirwa kutora. Sei kuti kuuya pamusoro?
Digital vaitamira rinobatanidza nokupfuuridzirwa digitaalinen paterevhizheni chiratidzo pamusoro penyika kubva masts kumba vagamuchiri.
Apo DSO kunoitika, TV Fafitera vanofanira kuva yakarongwa-pamusoro-bhokisi (Etc.) kana kushandisa digital TV kuti vagamuchire terevhizheni mabasa. A Set-Top Box ndizvo kazhinji kunzi decoder. By tive Set Top Box kuti inowirirana DVB-T2, chizvarwa chechipiri yenhepfenyuro michina (analogue inoshandisa DVB-T kana T-1 siyana), kana pasina pamwedzi chipeto kana digital TV, neterevhizheni Fafitera achakwanisa kugamuchira chiratidzo kana DSO ichaitika, vachitevera analogue ufambe kure. Izvi zvinoreva kuti munhu Fafitera ichatadza kungwarira analogue terevhizheni kana / iye haasati vaitama.
Kana uchida kuramba uchiona TV kana DSO ichaitika, uchava kutenga Free-to-Air STB / decoder (imwe chete-nguva kutenga uye hapana pamwedzi chipeto), ane Integrated Digital Terevhizheni yakatarwa kana mari-TV STB / decoder (ichi kunouya pamwedzi chipeto).
DVB (Digital Video Broadcasting) ndiye chiyereso digitaalinen terevhizheni kuti kwave vakagamuchirwa munyika dzakawanda Itu Region 1, apo Africa Falls.
DVB-T, izvo anomirira Digital Video Broadcasting yenyika, ndiye wokutanga DVB mwero ari kunotsiviwa DVB-T2.
DVB-T2 anomirira Digital Video Broadcasting (Second Generation yenyika), munhu kuvatsva maitiro anopa vabatsirwe yakanakisisa michina kuita uye chepamusoro kunyatsoshanda. DVB-T2 haasi shure inowirirana DVB-T. Zvazvakadaro, DVB-T vagamuchiri haagoni kugamuchira DVB-T2 anonongedzera, uye havagoni DVB-T2 vanogamuchira DVB-T anonongedzera.
Izvi zvinoreva kuti vanhu vanogara munyika apo vaitamira anonzi kunge kubudirira nokuda June 2015 wava, asi musi musi T-1 Michina kuve kutenga DVB-T2 vagamuchiri anotsigira DVB-T2 mureza.
Kuti atore digital nhepfenyuro chiratidzo, munhu anofanira kuva digital TV. Digital TV, kuti chinhu TV kuti ane inbuilt digitaalinen tuner. Asi kana munhu achine analogue TV, mumwe vanofanira kuwana digital mugamuchiri ari muchimiro yakatarwa-pamusoro bhokisi, iyo anomuchinja kuti zviratidzo kubva digital terevhizheni nhepfenyuro muchimiro chinogona kuonekwa pamusoro chinyakare analogue TV.
Izvi zvinoreva ikozvino tinofanira kubhadhara kuona migero tave kugamuchira vakasununguka pasi pano nhepfenyuro?
Kune mhando mbiri kutepfenyura basa Mabhokisi pamusoro pano papuratifomu: i.e. Free-to-mhepo uye Pay TV.
The Free-to-Air migero vaya Makagamuchira vasina nokunyora magwaro kana kubhadhara pamwedzi muripo kugamuchira. Mipata iyi richaramba vakasununguka kunyange pashure yokutama kubva analogue kune digitaalinen nhepfenyuro.
Pay-TV anoda kuti nokunyora magwaro uye kubhadhara kuzvinyoresa kubhadhara kuona nechokuita migero akafanana DStv kana GOtv.
In analogue nhepfenyuro, chiratidzo iri chinopfuudzwa sezvo chinoramba chinozunguzirwa, apo digitaalinen hutachiwana rinobatanidza kwemashoko chiratidzo sechinhu discrete chinozunguzirwa. For digitaalinen TV, chiratidzo iri encoded uye kunogona compressed kubvumira mamwe migero kuti kutepfenyura. Digital vaitamira inopa mukuru zvakawanda mibayiro pane analogue.
For mumwe, izvozvo kunovimbisa nani kutarisana unhu uye inopa mamwe mabasa akafanana redhiyo, teletext, dyidzana Services, mitambo, uye kutsigira nokuti nemaziso-vasingadzoreki uye neindaneti.
Pamusoro pe, kunobatsira kwezvivako-achagoverwawo uchishandisa chiratidzo Distributor wacho masts uye kunopa zvikuru mikana yakawanda vemo kugutsikana kugadzirwa, izvo ichabereka zvakawanda basa mikana kugutsikana creators. kuti nzira, izvozvo zvinobatsira diki chipimo zvoupfumi zvakanaka dzichitama nyika.
Sources kubva:http://allafrica.com/stories/201508032065.html
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