Cable TV network yevadiki. Chikamu 9: Musoro

Musoro wemusoro unounganidza masaini kubva kune akati wandei masosi, anoagadzirisa uye anoaparadzira kune tambo network.

Zviri mukati mechikamu chechinyorwa

• Chikamu 1: General dhizaini yeCATV network
• Chikamu 2: Kuumbwa uye waveform
• Chikamu 3: Analog chikamu chechiratidzo
• Chikamu 4: Digital chikamu chechiratidzo
• Chikamu 5: Coaxial Distribution Network
• Chikamu 6: RF Amplifiers
• Chikamu 7: Optical Receivers
• Chikamu 8: Optical backbone network
• Chikamu 9: Musoro
• Chikamu 10: Troubleshooting pamusoro tambo TV network

Patova nechinyorwa chinoshamisa paHabré nezve dhizaini yemusoro wemusoro: Chii chiri mukati metambo yemusoro. Ini handisi kuzozvinyora zvakare nemazwi angu uye ndinongokurudzira kuti vanofarira vajairane nazvo. Tsananguro yezviri munharaunda yangu ingasanyanya kunakidza, nekuti isu hatina akasiyana siyana emidziyo, uye ese masaini magadzirirwo anobatwa neAppearTV chassis ine makadhi ekuwedzera akasiyana, akasiyana ayo anobvumira mashandiro ese kuti akwane mukati. akati wandei mana-uniti chassis.

Mufananidzo kubva panzvimbo deps.ua

Zvishandiso izvi zvinokutendera iwe kudzora maitiro ese kuburikidza neanoshanda webhu interface, zvinoenderana neiyo hardware zvirimo chechasi.


Mukuwedzera, isu hatitore chiratidzo che-on-air, saka yedu antenna post inotaridzika seizvi:

Forum mufananidzo chipmaker.ru Ndakange ndisingabvumidzwe kuisa mufananidzo chaiwo wechiteshi chedu.

Iyi nhamba yemidziyo inodiwa kuti ugamuchire chiteshi kubva kune akati wandei satelliti panguva imwe chete.

Chiratidzo chesatellite chinowanzovharwa nekukwenya: iyi imhando yekuvharidzira umo zviratidzo zvekutevedzana zvinosanganiswa zvinoenderana nealgorithm yakapihwa. Izvi hazvidi simba rakawanda rekombuta uye nguva yekuuraya, zvinoreva kuti chiratidzo chinogadziriswa pasina kunonoka. Mune fomu yehardware, munyoreri identifier (kunyangwe ari mupi anoendesa chiratidzo mberi kune network yayo) kadhi rinozivikanwa rine chip, iro rinoiswa mune inomisikidzwa yekuwana module (CAM) ine CI interface, yakafanana ne. mune chero TV yemazuva ano.


Chaizvoizvo, ese masvomhu anoitwa mukati memodule, uye kadhi rine seti yemakiyi. Mushandi anogona kuvharidzira rukova nemakiyi ayo kadhi rinoziva (uye mushandisi pachake akazvinyora mukadhi) uye, nekudaro, gadzirisa seti yekunyoreswa kusvika pakubvisa zvachose kadhi kubva kuhurongwa, uchichinja iyo huru "operator" identifier. Iyi ingori tsananguro yakajairika yemashandisirwo emasisitimu ekuwana mashandisirwo anoshanda; kutaura zvazviri, kune akawanda akasiyana: kune rimwe divi, ari kugara achibiwa, uye kune rimwe divi, maalgorithms ari kuwedzera kuoma, asi izvo zvakasiyana zvachose. nyaya...

Sezvo mushandisi achipawo akabhadharwa chiteshi mapakeji munetiweki yayo, saka zvinodikanwa kuti udziise encode usati waendesa kunetiweki. Iri basa rinoitwa nemidziyo yechitatu-bato conditional access system provider, uyo anopa izvi kune anoshanda sebasa. Midziyo yakamisikidzwa kumusoro wepamusoro inovimbisa kushanda kweiyo conditional yekuwana system kune zvirimo: zvese encryption uye kutonga kwemakiyi akanyoreswa mu smart makadhi.

PS Hapana akandibatsira nechinyorwa pamusoro peDOCSIS, kana pane ane chido, ndichafara, nyora.

Source: www.habr.com