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I-Receiver/Idekhoda Ehlanganisiwe

Isamukeli esihlanganisiwe/idekhoda (i-IRD) noma isamukeli esihlanganisiwe/i-discrambler iyidivayisi esetshenziswa kusistimu ye-headend yedijithali ukuze yamukele futhi inqume amasignali edijithali kumasathelayithi noma eminye imithombo yangaphandle. I-IRD ithola isignali yedijithali, iyihlukanise, futhi iyidlulisele kusistimu yesihloko ukuze iqhubeke nokucutshungulwa. I-IRD ngokuvamile ixhunywe kumodemu, ethumela isignali ekhohliwe ohlelweni lwesihloko, lapho icutshungulwa khona, ifomethwe futhi isatshalaliswe eziteshini eziningi. I-IRD ingase futhi isetshenziselwe ukubethela idatha, okuvumela isistimu yesihloko ukuthi ilawule ukufinyelela kokuqukethwe. Ngaphezu kwalokho, i-IRD ingase isetshenziselwe ukulawula imvamisa yesiginali, ivumele isistimu ye-headend ukuthi ithuthukise ukwamukela kwesiginali.

Idikhoda ehlanganisiwe yokwamukela isetshenziselwa ini?
Izinhlelo zokusebenza eziyinhloko ze-Integrated Receiver/Decoder (IRD) ithelevishini yedijithali, umsakazo wedijithali, i-IPTV, i-Video on Demand (VOD) kanye nokusakaza ividiyo. Isebenza ngokwamukela nokuqopha isignali yokusakaza yedijithali ibe yifomethi engavezwa noma ibukwe kumabonakude noma enye idivayisi yemidiya. I-IRD ibe isiguqula isignali yedijithali ibe isignali ye-analog engabukwa kumabonakude. Ukwengeza, i-IRD ingase futhi isetshenziselwe ukulawula ukufinyelela eziteshini ezithile noma amasevisi, kanye nokususa ukubethela noma ukukhipha isignali yedijithali.
Yiziphi izinzuzo zesamukeli/isikhiphi esihlanganisiwe ngaphezu kwabanye?
1. Ama-IRD anezinga eliphezulu lokuvikela ukubethela kunabanye abamukeli, okuwenza avikeleke kakhulu.
2. Ama-IRD angathola amasignali edijithali emithonjeni eminingi, njengesathelayithi, ikhebuli, nomabonakude wasemhlabeni.
3. Ama-IRD ayonga amandla amaningi, njengoba esebenzisa amandla amancane kunabanye abamukeli.
4. Ama-IRD adinga ukulungiswa okuncane, njengoba awadingi ukuhlelwa mathupha.
5. Ama-IRD ahlinzeka ngekhwalithi ephezulu nokucaca komsindo nevidiyo kunabanye abamukeli.
6. Ama-IRD kulula ukuwafaka nokuwalungisa.
7. Ama-IRD avumela ukwenziwa ngokwezifiso okwengeziwe kwezinhlelo nezilungiselelo.
8. Ama-IRD ahambisana namadivayisi amaningi, njengama-TV, amakhompyutha, namadivayisi eselula.
9. Ama-IRD ahlinzeka ngezinketho eziningi zokuphumayo, njenge-HDMI, ingxenye, nenhlanganisela.
10. Ama-IRD ahlinzeka ngezinhlobonhlobo zezici namasevisi, okuhlanganisa Izilawuli Zomzali, Amazwibela Avaliwe, kanye Nevidiyo Efunwa Ngayo.
Kungani i-IRD (i-intergrated receiver decoder) ibalulekile?
Umamukeli/amadekhoda ahlanganisiwe (IRD) abalulekile ngoba akuvumela ukuthi uqophe amasignali edijithali futhi uwamukele ngokuchazwa okuphezulu. Ama-IRD angathola amasignali edijithali esesathelayithi nekhebula, okukuvumela ukuthi ufinyelele uhla olubanzi lwezinhlelo zedijithali. Baphinde bafike nezici ezifana nezithombe ezisesithombeni kanye namarekhodi evidiyo edijithali, okwenza kube lula ukuwabuka nokuqopha izinhlelo.
Ungasikhetha kanjani isamukeli/idekhoda Edidiyelwe (IRD) ngokwezinhlelo zokusebenza?
1. I-TV Yedijithali: Bheka Isamukeli Esihlanganisiwe/Isikhiphi (i-IRD) esinezici ezifana nekhono lokuqopha amasignali evidiyo edijithali, usekelo lombhalo wekhodi we-MPEG4, kanye nohlu lokufakiwe kwevidiyo okuhambisanayo.

2. IPTV: Bheka i-IRD enezici ezifana nosekelo lwe-IPTV, ukusakaza okuningiliziwe, nokuhambisana nohlu olubanzi lwezivumelwano ze-IPTV.

3. I-Cable TV: Bheka i-IRD enezici ezifana nokusekelwa kwamazinga we-cable TV, ukuhambisana nabahlinzeki be-TV bekhebula abahlukahlukene, kanye nekhono lokunquma amasignali e-analog.

4. I-TV yesathelayithi: Bheka i-IRD enezici ezifana nekhono lokunquma amasignali evidiyo edijithali, usekelo lwamasistimu amaningi wesathelayithi, nokuhambisana nabahlinzeki be-TV besathelayithi abahlukahlukene.

5. I-Terestrial TV: Bheka i-IRD enezici ezifana nokusekelwa kwamazinga amaningi asemhlabeni, ukusebenzisana nabahlinzeki be-TV yasemhlabeni abahlukahlukene, kanye nekhono lokunquma amasignali e-analog.
Yimiphi imininingwane yedekhoda ehlanganisiwe yokwamukela okufanele uyinakekele?
Izicaciso ezibaluleke kakhulu ze-Integrated Receiver/Decoder abathengi okufanele bazicabangele amandla ayo okukhipha amakhodi, izixhumi zokufaka/okukhiphayo, ukulungiswa, ukuphuma komsindo/ividiyo, ukuhambisana kwesilawuli kude, ikhwalithi yesithombe, kanye nentengo. Okunye ukucaciswa okubalulekile abathengi abangafuna ukukucabangela kufaka phakathi usayizi nesisindo seyunithi, inombolo yamashuna, amandla esithombe-esithombeni, umthamo wokurekhoda, nezimbobo zokukhipha ezihlukahlukene (HDMI, Component, njll.).
Ngaphandle kwalokhu, hlala ulandela lezi zinyathelo ngaphambi kokwenza izinqumo zokugcina:
Isinyathelo 1: Thola izidingo zakho. Cabanga ngokuthi hlobo luni lokuqukethwe ofuna ukukuthola, nokuthi hlobo luni lwezici odinga Isamukeli/Idikhoda yakho Edidiyelwe ukuze ube nazo.

Isinyathelo sesi-2: Qhathanisa izici nezintengo. Bheka amamodeli ahlukene ukuze uthole leyo ehlangabezana kangcono nezidingo zakho. Cabangela inani lamashaneli, ukulungiswa, ikhwalithi yomsindo/ividiyo, ukusetshenziswa kalula, kanye nezindleko.

Isinyathelo sesi-3: Funda izibuyekezo. Bheka izibuyekezo ezivela kumakhasimende athenge imodeli efanayo onentshisekelo kuyo. Lokhu kuzokusiza ukuthi uthole ukuqonda okungcono komkhiqizo nokuthi usebenza kanjani ezimeni zempilo yangempela.

Isinyathelo sesi-4: Buza imibuzo. Uma unemibuzo mayelana nomkhiqizo, buza umthengisi noma umkhiqizi. Kufanele bakwazi ukuphendula noma yimiphi imibuzo onayo ngaphambi kokwenza ukuthenga kwakho.

Isinyathelo sesi-5: Faka i-oda lakho. Uma usuthole I-Integrated Receiver/Decoder ehlangabezana nezidingo zakho, faka i-oda lakho. Qiniseka ukuthi unaka noma yiziphi izinqubomgomo zokubuyisela, uma kwenzeka unganelisekile ngokuthenga kwakho.
Imaphi amanye amadivaysi asetshenziswa kanye nomamukeli/idekhoda edidiyelwe ohlelweni lwe-headend yedijithali?
Izinto ezisetshenziswayo ezihlobene noma amadivaysi asetshenziswa ngokuhlangana Nesamukeli/Isikhiphisidikhoda Esihlanganisiwe (IRD) kusistimu ye-headend yedijithali ihlanganisa amamoduli, izifaki khodi, ama-multiplexer, nama-scrambler. I-IRD isebenzela ukwamukela nokukhipha amasignali edijithali bese iwakhipha. I-modulator ithatha okukhiphayo ku-IRD futhi ikumodareyithe kumagagasi enkampani yenethiwekhi ukuze ikwazi ukudluliselwa. Isifaki khodi sithatha isignali eshintshiwe bese siyibhala ngefomethi ethile, njenge-MPEG-2, ukuze idluliselwe. I-multiplexer ivumela amasiginali amaningi ukuthi aphindaphindwe emfudlaneni wesignali eyodwa, bese ithunyelwa ku-scrambler. I-scrambler iqinisekisa ukuthi abasebenzisi abagunyaziwe kuphela abangafinyelela isignali.
Yimuphi umehluko phakathi kwesamukeli/isikhiphi esihlanganisiwe esihlanganisiwe kanye nomamukeli wesathelayithi?
Umehluko omkhulu phakathi kwe-Integrated Receiver/Decoder (IRD) kanye nesamukeli sesathelayithi wuhlobo lwesiginali abayitholayo. I-IRD ithola amasignali kumhlinzeki wekhebula noma isathelayithi, kuyilapho isathelayithi ithola amasiginali esitsheni sesathelayithi. I-IRD ivamise ukusetshenziselwa ukuqopha amasiginali abethelwe kukhebula noma kumhlinzeki wesathelayithi, kuyilapho isamukeli sesathelayithi sisetshenziselwa ukwamukela amasiginali avela kusathelayithi. I-IRD ngokuvamile idinga ukubhaliswa kwekhebula noma umhlinzeki wesathelayithi ukuze ikwazi ukunquma amasignali, kuyilapho isamukeli sesathelayithi sidinga kuphela isidlo sesathelayithi ukuze samukele amasignali.
Ungakhetha kanjani phakathi kwe-FTA ne-CAM edidiyelwe isamukeli/isiqophi?
Umehluko omkhulu phakathi kwe-FTA Integrated receiver/decoder kanye ne-Integrated receiver/decoder enemojuli ye-CAM ngokuya ngamanani, isakhiwo, imisebenzi, nokunye.

Ngokwamanani amanani, isamukeli/isikhiphisidikhoda Esididiyelwe esinemojuli ye-CAM ngokuvamile sibiza kakhulu kunesamukeli/idekhoda Ehlanganisiwe ye-FTA. Lokhu kungenxa yokuthi imojula ye-CAM ihlanganisa izingxenye zezingxenyekazi zekhompuyutha ezengeziwe umamukeli/isikhiphi khodi esihlanganisiwe se-FTA engenazo.

Ngokuya ngesakhiwo, isamukeli/idikhoda Ehlanganisiwe ye-FTA inomklamo olula kunesamukeli/idikhoda Ehlanganisiwe enemojula ye-CAM. Umamukeli/idekhoda ye-FTA ngokuvamile inezingxenye ezimbalwa, okwenza kube lula ukuyifaka nokuyinakekela.

Ngokuya ngemisebenzi, umamukeli/isikhiphisidikhoda esididiyelwe esinemojula ye-CAM sinamandla amakhulu kunesamukeli/isikhiphisikhikhoda se-FTA. Iyakwazi ukwamukela kanye nokuqopha amasiginali abethelwe, kanti umamukeli/isikhiphi khodi se-FTA singathola amasignali amahhala ukuya emoyeni.

Isamukeli/idekhoda Ehlanganisiwe enemojuli ye-CAM nayo inezici ezengeziwe, ezifana nekhono lokurekhoda nokugcina izinhlelo, ukufinyelela kumasevisi asebenzisanayo, nokusetha izilawuli zabazali. Isamukeli/idekhoda ye-FTA ayinazo lezi zici.

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