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I-DTV Encoder Modulator

I-Digital TV Encoder Modulator iyidivayisi esetshenziswa ezinhlelweni ze-headend zedijithali ukufaka ikhodi yamasiginali kamabonakude wedijithali. Kuthatha amasignali edijithali ohlelweni lwe-headend yedijithali futhi iwaguqule abe amasignali amafrikhwensi omsakazo ukuze adluliselwe. Kusistimu ye-headend yedijithali, i-Digital TV Encoder Modulator ngokuvamile iyidivayisi yokuqala esetshenziselwa ukucubungula amasignali edijithali. I-encoder modulator ibese imodela isiginali bese iyidlulisela kokuthile noma kusitsha sesathelayithi. Isignali eshintshiwe ibe isitholwa abemukeli be-TV, abanquma isignali futhi babonise okuqukethwe kwedijithali. I-Digital TV Encoder Modulator iyingxenye ebalulekile yanoma iyiphi isistimu ye-headend yedijithali futhi inesibopho sokuqinisekisa ukuthi okuqukethwe kwedijithali kulethwa ngendlela ethembekile nephumelelayo.

Kungani i-digital TV Encoder Modulator ibalulekile?
I-digital TV Encoder Modulator ibalulekile ngoba ivumela amasiginali we-TV ukuthi adluliselwe ngefomethi yedijithali, kune-analogi. Lokhu kunganikeza isithombe esithuthukisiwe nekhwalithi yomsindo futhi kungavumela izici ezengeziwe ezifana namasevisi asebenzisanayo, ukusakazwa okuningi komsindo nevidiyo, namasevisi edatha.
Zingaki izinhlobo ze-digital TV Encoder Modulator ezikhona futhi yimuphi umehluko phakathi kwazo zonke?
Kunezinhlobo ezintathu eziyinhloko zama-digital TV Encoder Modulators: I-Analog, Digital, ne-Hybrid.

Ama-Analog Encoder Modulators aguqula amasiginali e-analogi, njengomsakazo nomabonakude, abe ifomu ledijithali ukuze lidluliselwe. I-Digital Encoder Modulators iguqula amasiginali edijithali, asuka kumhlinzeki we-TV wesathelayithi noma wekhebula, abe ifomu elifanele umabonakude osakazwayo. Ama-Hybrid Encoder Modulators ahlanganisa izici ezivela kuzo zombili Ama-Analog and Digital Encoder Modulators, okuvumela okokufaka kokubili amasiginali e-analog neyedijithali.
Ungayikhetha kanjani imoduli yesishumeki se-TV yedijithali engcono kakhulu?
Umhlahlandlela Wokuthenga we-Digital TV Encoder Modulator yohlelo ngalunye:

1. Izinhlelo zokusebenza zokusakaza: Lapho ukhetha imoduli yesishumeki se-TV yedijithali yezinhlelo zokusebenza zokusakaza, bheka enokufakwa kwevidiyo ye-analogi yekhwalithi ephezulu enamafomethi amaningi ombhalo wekhodi wamavidiyo, usekelo lwanoma yiluphi uhlobo lwefomethi yevidiyo yedijithali, umbhalo wekhodi othembekile, kanye ne-low-. ukukhishwa kwe-latency. Cabangela amandla okukhiphayo kanye nenani lamashaneli okushintshashintsha okudingwa uhlelo lwakho lokusakaza.

2. Izinhlelo zokusebenza ze-IPTV: Lapho ukhetha imojuli yesishumeki se-TV yedijithali yezinhlelo zokusebenza ze-IPTV, bheka enamafomethi amaningi okusakaza-bukhoma nekhodi, usekelo lwevidiyo edingeka kakhulu (i-VOD), ukusakazwa kwe-IP okuthembekile, nokuphumayo okubambezeleke kancane. Cabangela inkundla yesevisi ye-IPTV oyisebenzisayo kanye nenani lamashaneli owadingayo ukuze ufake ikhodi.

3. Izinhlelo zokusebenza ze-TV yekhebula: Lapho ukhetha imoduli yesishumeki se-TV yedijithali yezinhlelo zokusebenza ze-TV yekhebula, bheka enokufakwa kwevidiyo ye-analog yekhwalithi ephezulu, amafomethi ombhalo wekhodi wevidiyo amaningi, usekelo lwanoma yiluphi uhlobo lwefomethi yevidiyo yedijithali, umbhalo wekhodi othembekile, ukubambezeleka okuphansi. okukhiphayo, nokuphumayo kwamashaneli amaningi. Cabangela amandla okukhipha kanye nenani lamashaneli okushintshashintsha okudingwa uhlelo lwakho lwe-TV yekhebula.

4. Izinhlelo zokusebenza ze-OTT: Lapho ukhetha imoduli yesishumeki se-TV yedijithali yezinhlelo zokusebenza ze-OTT, bheka enamafomethi amaningi okusakaza bukhoma kanye nekhodi, usekelo lwevidiyo edingeka kakhulu (VOD), ukusakazwa kwe-IP okuthembekile, nokuphumayo okubambezeleke kancane. Cabangela inkundla yesevisi ye-OTT oyisebenzisayo kanye nenani lamashaneli owadingayo ukuze ufake ikhodi.
Ngaphandle kwalokho, hlala ucabanga kabili ngaphambi kokufaka i-oda lale divayisi ebiza kakhulu:
1. Cwaninga izici nokucaciswa kwezishumeki ze-TV zedijithali namamojula. Qiniseka ukuthi uyaqaphela imvamisa yokusakaza, okukhipha ividiyo, namandla okushintsha.

2. Cabangela uhlobo lwesignali ofuna ukuyidlulisela. Cabangela izici ezifana nohlobo lwesiteshi, uhlobo lokusakaza, kanye nenani lamashaneli ofuna ukuwadlulisela.

3. Qhathanisa izindleko nokutholakala kwezifaki khodi ezihlukene namamoduli. Qiniseka ukuthi uqhathanisa izindleko zokufaka nokunakekela futhi.

4. Hlola ukubuyekezwa kwezifaki khodi namamoduli ahlukene. Lokhu kuzokunikeza umbono ongcono wokuthi umkhiqizo ngamunye uthembeke kangakanani.

5. Cabangela isevisi yamakhasimende kanye newaranti enikezwa umenzi. Qiniseka ukuthi uzokwazi ukuthola usizo nganoma yiziphi izinkinga ongase ube nazo ngomkhiqizo.

6. Uma usukhethe imoduli yesifaki khodi se-TV yedijithali engcono kakhulu yezidingo zakho, faka i-oda lakho.
Yiziphi izinzuzo zemodulator yesishumeki se-TV esidijithali ngaphezu kwesishumeki sekhodi esisodwa noma imoduli?
Ukusebenzisa i-TV Encoder Modulator yedijithali kunezinzuzo ezimbalwa phezu kokusebenzisa isishumeki sekhodi esisodwa noma imoduli eyodwa:

1. Inikeza ukuguquguquka okukhulu ekubhaleni ikhodi nasekumodeleni amasiginali we-TV yedijithali.
2. Ibiza kakhulu kunokusebenzisa izingxenye ezihlukene.
3. Ihlinzeka ngesixazululo esisodwa sazo zonke izidingo zakho ze-TV yedijithali.
4. I-TV Encoder Modulator edidiyelwe yedijithali inesikali esakhelwe ngaphakathi, esivumela ukulungiswa kokulungiswa kwevidiyo nezinga lozimele.
5. Inikeza ikhono lokufaka ikhodi kanye nokulinganisa iziteshi ezifika kweziyisi-8 ngesikhathi esisodwa.
6. Kulula ukufaka nokulungisa.
7. Inamandla okudlulisa amasignali edijithali ebangeni elide.
8. Inikeza ukwesekwa kwamazinga e-TV edijithali ahlukahlukene, okuhlanganisa i-ATSC, ISDB-T, DVB-T, ne-DVB-C.
Yiziphi izinhlelo zokusebenza eziyinhloko zesimodeli se-TV esidijithali?
Ama-Digital TV Encoder Modulators asetshenziswa ezinhlelweni ezihlukene, okuhlanganisa ukusakaza i-TV, ikhebula le-TV, i-IPTV, i-TV yesathelayithi, nezimpawu zedijithali. Bafaka ikhodi yesignali ye-TV yedijithali ibe ifomethi engasakazwa emoyeni noma idluliselwe ngomugqa wekhebula. Baphinde balungise isignali ukuze yamukelwe futhi iqoshwe yisamukeli se-TV.
Yiziphi izicaciso ezibaluleke kakhulu zemoduli yesishumeki okufanele uzinakekele?
Ukucaciswa okubaluleke kakhulu kwe-digital TV Encoder Modulator okufanele uyicabangele ukulungiswa kwevidiyo, ikhwalithi yomsindo, ividiyo nomsindo wombhalo wekhodi, ifomethi yokumodulation, okukhiphayo kwe-RF, namandla okusakaza e-IP. Okunye ukucaciswa okubalulekile kufaka phakathi inani lamashaneli okokufaka, ukwesekwa kwe-IPTV, ukwesekwa kwe-MPEG-2 ne-MPEG-4, namandla esithombe-esithombeni. Ukwengeza, abathengi kufanele bacabangele usayizi womzimba wedivayisi, ukusetshenziswa kwamandla, nosekelo lwesilawuli kude.
Zingaki izinhlobo zama-protocal ezikhona zemoduli yesishumeki se-DTV?
Kunezinhlobo ezimbili eziyinhloko zamaphrothokholi edijithali ye-TV Encoder Modulators: MPEG-2 kanye ne-H.264. Ukukhetha phakathi kwakho kokubili kuncike kumkhawulokudonsa otholakalayo kanye nekhwalithi yevidiyo ofuna ukuyifinyelela. I-MPEG-2 ngokuvamile ingcono ezinhlelweni zomkhawulokudonsa ophezulu futhi inikeza ikhwalithi yevidiyo ephezulu, kuyilapho i-H.264 ingcono ezinhlelweni zomkhawulokudonsa ophansi futhi inikeza ukuminyanisa okungcono.
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