Headend yana tattara sigina daga tushe da yawa, sarrafa su kuma yana watsa su zuwa hanyar sadarwar kebul.
Abubuwan da ke cikin jerin labaran
- Kashi na 9: Gaba
- Sashe na 10: Matsalar hanyar sadarwa ta CATV
An riga an sami labari mai ban sha'awa akan Habré game da zane na headend: . Ba zan sake rubuta shi cikin kalmomi na ba kuma kawai zan ba da shawarar cewa masu sha'awar su san kansu da shi. Bayanin abin da ke cikin ikona ba zai zama mai ban sha'awa ba, saboda ba mu da nau'ikan kayan aiki iri-iri, kuma duk sarrafa siginar ana sarrafa ta ta AppearTV chassis tare da katunan fadada daban-daban, iri-iri waɗanda ke ba da damar duk ayyukan su dace da su. chassis mai raka'a da yawa.
Hoto daga gidan yanar gizo
Waɗannan na'urori suna ba ku damar sarrafa duk matakai ta hanyar haɗin yanar gizo mai aiki, wanda ya dogara da abun ciki na hardware na chassis.
Bugu da kari, ba ma tattara siginar iska, don haka sakon eriyanmu yayi kama da haka:
Hoton dandalin An hana ni saka ainihin hoton tashar mu.
Wannan adadin jita-jita ya zama dole don karɓar tashoshi daga tauraron dan adam da yawa a lokaci guda.
Siginar tauraron dan adam yawanci ana rufe shi ta hanyar zage-zage: wannan nau'in ɓoye ne wanda aka gauraya alamomin jeri bisa ga wani algorithm da aka bayar. Wannan baya buƙatar ƙarfin lissafi da yawa da lokacin aiwatarwa, wanda ke nufin ana sarrafa siginar ba tare da bata lokaci ba. A cikin sigar kayan aiki, mai gano masu biyan kuɗi (ko da mai ba da sabis ne wanda ke isar da siginar gaba cikin hanyar sadarwarsa) sanannen kati ne mai guntu, wanda aka saka shi a cikin na'urar samun damar yanayi (CAM) tare da CI interface, daidai da a kowane zamani TV.
A haƙiƙa, duk lissafin lissafi ana yin su ne a cikin tsarin, kuma katin yana ɗauke da saitin maɓalli. Mai aiki zai iya ɓoye rafi tare da maɓallan da katin ya sani (kuma mai aiki da kansa ya rubuta su a cikin katin) kuma, don haka, sarrafa saitin biyan kuɗi har zuwa cire haɗin katin gaba ɗaya daga tsarin, canza babban mai gano "mai aiki". Wannan shi ne kawai bayanin yadda tsarin shigar da sharadi ke aiki; a zahiri, akwai nau'o'in daban-daban: a gefe guda, ana yin kutse akai-akai, kuma a daya bangaren, algorithms suna daɗa rikitarwa, amma wannan ya bambanta. labari...
Tun da afaretan kuma yana ba da fakitin tashoshi da aka biya a cikin hanyar sadarwar sa, don haka ya zama dole a ɓoye su kafin aika su zuwa hanyar sadarwar. Ana yin wannan aikin ta kayan aiki na mai ba da tsarin samun dama ga wani ɓangare na uku, wanda ke ba da wannan ga mai aiki azaman sabis. Kayan aikin da aka shigar a headend yana tabbatar da aiki na tsarin samun dama ga abun ciki: duka boye-boye da sarrafa maɓallan rajista a cikin katunan wayo.
PS Babu wanda ya taimake ni da labarin akan DOCSIS, idan kowa yana da sha'awar, zan yi farin ciki, rubuta.
source: www.habr.com
