Munyaya yekuparadzira mashoko edhijitari, mapurosesa emusoro anoita basa guru mukufambisa mashoko eterevhizheni neredhiyo zvakanaka. Chinyorwa chino chine chinangwa chekujekesa kuti headend yedhijitari chii uye kukosha kweheadend processor muhurongwa uhwu.
Chii chinonzi digital headend?:
Musoro wedhijitari unoreva nzvimbo huru yenetwork yekutepfenyura inogamuchira, kugadzirisa uye kuparadzira masaini esatellite, cable kana terrestrial terevhizheni neredhiyo. Ndiwo moyo wesystem, inounganidza masaini kubva kunzvimbo dzakasiyana-siyana uye ichiashandura kuita fomati yakakodzera kugoverwa kuburikidza nenetwork. Nzvimbo yepamusoro yedhijitari inoita kuti zvemukati zvipihwe kune vateereri vekupedzisira nenzira yepamusoro uye yakarongeka.
Basa remuchina wekugadzirisa musoro:
Iyoprocessor yemusoro chikamu chakakosha chedhijitari uye ine basa rekutarisira nekugadzirisa masaini anouya. Basa rayo guru nderekugadzirisa uye kutsanangura mhando dzakasiyana dzemasaini eaudio nemavhidhiyo kuita mafomati akakodzera kugoverwa pamapuratifomu nemidziyo yakawanda. Inoshanda senzira yekubatanidza zviri mukati memutepfenyuri nenetwork yekuparadzira.
Muchina wekugadzirisa masaini unogamuchira masaini kubva kunzvimbo dzakasiyana dzakadai sema satellite feeds, nzira dzemunharaunda uye nzvimbo dzeInternet. Masaini aya anosanganiswa, anogadziriswa uye anoshandurwa kuita fomati yakajairika uchishandisa matekiniki ekunyora masaini uye transcoding. Muchina uyu unobva wagadzira ma multiplexes, ayo ari mabundle emachiteshi kana masevhisi anogona kutumirwa pamwe chete pamusoro pefrequency imwe chete.
Iyo head-end processor inobatawo masisitimu ekuwana ruzivo ane mamiriro ekunze kuti ive nechokwadi chekuti kuparadzirwa kwemashoko kwakachengeteka. Inochengetedza uye inobvisa mashoko ekudzivirira kuti mashoko adziviswe uye kuti vanhu vasawane ruzivo rwakakodzera. Pamusoro pezvo, inoita mabasa akasiyana-siyana ekutarisa kunaka kwemashoko uye kutarisa kuti zvinhu zvinoburitswa zvirambe zvakanaka.
Mabhenefiti uye Kufambira Mberi:
Sezvo tekinoroji ichifambira mberi, ma "headend processors" ari kuramba achichinja kuti atsigire zvinodiwa nenhepfenyuro dzemazuva ano. Iye zvino anosanganisira zvinhu zvakaita se "advanced video encoding", "streaming", "advanced audio codecs", uye "compatibility" nematanho akasiyana ekufambisa. Izvi zvinogonesa vashandisi kupa zvemukati zvine hungwaru, masevhisi anoshanda pamwe chete uye kushandisa bandwidth zvakanaka.
Iyo head-end processor inoshanda seyuniti yekudzora iri pakati, ichipa kushanduka uye kugona kukura kune vanobata network. Inovabvumira kuwedzera kana kubvisa nzira zviri nyore, kugadzirisa mapakeji ezvinyorwa, uye kugadzirisa zvinoenderana nezvinodiwa nevateereri. Kuburikidza nekuwedzera nhamba, iyo head-end processor inogovanisa zviwanikwa zvinoenderana nezvinodiwa kuti iwedzere kushandiswa kwebandwidth, nokudaro ichichengetedza mari yevashandi.
Mhedziso:
Muchidimbu,ma processor emusorondivo musimboti wemasisitimu edhijitari eheadend uye vane basa rekugadzirisa, kutarisira, uye kugovera masaini eaudio nemavhidhiyo pamapuratifomu akasiyana-siyana. Izvi zvinoita basa rakakosha mukuona kuti vaoni vanowana ruzivo rwekuona rwakanaka uye rwakanaka. Sezvo kufambira mberi kuri kuramba kuchienderera mberi, mapurosesa eheadend anoramba achichinja uye achichinja zvinoenderana nemamiriro ekuparadzira anogara achichinja.
Nguva yekutumira: Mbudzi-09-2023