Ukuqonda indima yeeprosesa ze-head-end kwiinkqubo ze-digital head-end

Kwicandelo losasazo lwedijithali, iiprosesa zentloko zidlala indima ebalulekileyo ekudlulisweni ngokufanelekileyo kwemiqondiso kamabonakude neyerediyo. Eli nqaku lijolise ekucaciseni ukuba yintoni i-digital headend kunye nokubaluleka kweprosesa yentloko kule nkqubo.

Yintoni i-headend yedijithali?:
Intloko yedijithali ibhekisa kwindawo ephambili yenethiwekhi yokusasaza efumana, icwangcise kwaye isasaze imiqondiso yesathelayithi, ikhebula okanye ithelevishini yomhlaba kunye nerediyo. Yintliziyo yenkqubo, iqokelela imiqondiso evela kwimithombo emininzi kwaye iyiguqule ibe yifomathi efanelekileyo yokusasazwa ngenethiwekhi. I-front-end yedijithali iqinisekisa ukuba umxholo uhanjiswa kubaphulaphuli bokugqibela ngendlela ekumgangatho ophezulu nehambelanayo.

Indima yeprosesa yentloko:
Iiprosesa yentloko yinxalenye ebalulekileyo yentloko yedijithali kwaye inoxanduva lokulawula nokucubungula imiqondiso engenayo. Umsebenzi wayo oyintloko kukucubungula nokuchonga iintlobo ezahlukeneyo zemiqondiso yesandi neyevidiyo kwiifomathi ezifanelekileyo ukusasazwa kumaqonga amaninzi kunye nezixhobo. Isebenza njengesango phakathi komxholo wosasazo kunye nenethiwekhi yokusasazwa.

Iprosesa eyintloko ifumana imiqondiso evela kwimithombo eyahlukeneyo efana nee-satellite feeds, iitshaneli zasekuhlaleni kunye nemithombo ye-intanethi. Ezi miqondiso ziyadityaniswa, zichazwe kwaye ziguqulwe zibe yifomathi eqhelekileyo kusetyenziswa iindlela ezikhethekileyo zokubhala ikhowudi kunye nokubhala ikhowudi. Emva koko iprosesa ivelisa ii-multiplexes, eziyimiqulu yeziteshi okanye iinkonzo ezinokudluliselwa kunye kwi-frequency enye.

Iprosesa yentloko ikwaphatha iinkqubo zokufikelela ngokwemiqathango ukuqinisekisa ukusasazwa komxholo okukhuselekileyo. Ibhala ngemfihlo kwaye ikhuphe iikhowudi zemiqondiso ukuthintela ukufikelela okungagunyaziswanga kunye nobusela. Ukongeza, yenza uhlolo lomgangatho olwahlukeneyo kunye nemisebenzi yokubeka esweni ukugcina ukuthembeka komxholo osasazwayo.

Iingenelo kunye neNqubekela phambili:
Njengoko ubuchwepheshe buqhubela phambili, iiprosesa ze-headend ziyaqhubeka nokutshintsha ukuze zixhase iimfuno zosasazo lwanamhlanje. Ngoku ziquka izinto ezifana nokufaka iikhowudi zevidiyo eziphambili, amandla okusasaza, iikhowudi zesandi eziphambili, kunye nokuhambelana nemigangatho eyahlukeneyo yothutho. Ezi ziphuculo zivumela abaqhubi ukuba banikezele ngomxholo ocacileyo, iinkonzo ezisebenzisanayo kunye nokusetyenziswa kwe-bandwidth ngokufanelekileyo.

Iprosesa yentloko isebenza njengeyunithi yolawulo oluphakathi, inika ukuguquguquka kunye nokukhula kubaqhubi benethiwekhi. Ibavumela ukuba bongeze okanye basuse ngokulula iziteshi, benze ngokwezifiso iipakethe zomxholo, kwaye bazivumelanise nokutshintsha kwezinto ezikhethwa ngabaphulaphuli. Ngokusebenzisa i-statistical multiplexing, iprosesa yentloko yabela izixhobo ngokuguquguqukayo ngokwemfuno ukuze kuphuculwe ukusetyenziswa kwe-bandwidth, ngaloo ndlela konga iindleko kubaqhubi.

Isiphelo:
Isishwankathelo,iiprosesa zentlokoZiyintsika yeenkqubo ze-digital headend kwaye zinoxanduva lokucubungula, ukulawula, kunye nokusasaza imiqondiso yesandi kunye nevidiyo kumaqonga ahlukeneyo. Idlala indima ebalulekileyo ekuqinisekiseni ukuba ababukeli bafumana amava okubukela angenamthungo, asemgangathweni ophezulu. Njengoko ukuqhubela phambili kuqhubeka, iiprosesa ze-headend ziyaqhubeka nokuguquka kwaye zilungele imeko-bume yosasazo etshintsha rhoqo.