{"id":35405,"date":"2019-10-31T22:04:08","date_gmt":"2019-10-31T19:04:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya\/"},"modified":"2019-10-31T22:04:08","modified_gmt":"2019-10-31T19:04:08","slug":"seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya","title":{"rendered":"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/e2ecba3816d8e6d1e6b4a29c70d864e1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPeamine jaam kogub signaale mitmest allikast, t\u00f6\u00f6tleb neid ja edastab kaabelv\u00f5rku.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Artiklisarja sisu<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">Osa 1: \u00dcldine KTV v\u00f5rgu arhitektuur<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Osa 2: Signaali koostis ja kuju<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">Osa 3: Analoogne signaalikomponent<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">Osa 4: Digitaalne signaalikomponent<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Osa 5: Koaksiaalne jaotusv\u00f5rk<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">Osa 6: RF-signaalide v\u00f5imendid<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">Osa 7: Optilised vastuv\u00f5tjad<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455355\/\">Osa 8: Optiline peav\u00f5rk<\/a><\/noindex><\/li>\n<li>Osa 9: Peajaam<\/li>\n<li>Osa 10: Veaotsing ja t\u00f5rkeotsing KTV v\u00f5rgus<\/li>\n<\/ul>\n<p>\nHabr'is on juba suurep\u00e4rane artikkel peamise jaama seadmete kohta: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/165643\/\">Mis on peamise kaabeltelevisiooni jaama sees<\/a><\/noindex>. Ma ei hakka seda oma s\u00f5nadega \u00fcmber kirjutama ja soovitan lihtsalt huvilistel sellega tutvuda. Kirjeldus sellest, mis on minu valdkonnas, oleks v\u00e4hem huvitav, sest meil pole sellist seadmete mitmekesisust, ning kogu signaalide t\u00f6\u00f6tlemisega tegelevad AppearTV \u0161assid koos erinevate laienduskaartidega, mille mitmekesisus v\u00f5imaldab kogu funktsionaalsuse mahutada m\u00f5nesse nelja\u00fche \u00fcksusesse \u0161assiisse.<\/p>\n<p><img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/d3ab4fefde30a84e8e802842b8f9f8ef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/19e9cdaa190310cb7aac5d37434b3550.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Pilt saidilt <noindex><a rel=\"nofollow\" href=\"https:\/\/deps.ua\/katalog\/ip-strimeryi\/appear-tv-xc5000-5100.html\">deps.ua<\/a><\/noindex><\/i><\/p>\n<p>Need seadmed v\u00f5imaldavad j\u00e4lgida k\u00f5iki protsesse funktsionaalse veebiliidese kaudu, mis s\u00f5ltub \u0161assi sisust.<br \/>\n<img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/7badb1d32aad8d76825aa8ca6ed91fc4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nLisaks ei kogu me maapealset signaali, seet\u00f5ttu n\u00e4eb meie antennipost v\u00e4lja umbes nii:<br \/>\n<img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/c01c936af6ece5a16f60f3f4321bcc7a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Pilt foorumist <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chipmaker.ru\/topic\/178360\/?do=findComment&amp;comment=3719772\">chipmaker.ru<\/a><\/noindex> Tegelikku pilti meie jaamast ei lubatud mul jagada.<\/i><\/p>\n<p>Selline taldrikute arv on vajalik signaalide saamiseks mitmest satelliidist samaaegselt.<\/p>\n<p>Satelliidisignaal on tavaliselt kr\u00fcpteeritud: see on \u0161ifreerimisviis, kus j\u00e4rjestuse s\u00fcmbolid segatakse m\u00e4\u00e4ratud algoritmi j\u00e4rgi. See ei n\u00f5ua suurt arvutusv\u00f5imet ja aega t\u00e4itmiseks, seega t\u00f6\u00f6deldakse signaali viivitamata. Aparaadi tasemel on tellija identifikaator (isegi kui see on edastaja, kes edastab signaali edasi oma v\u00f5rkku) - tuttav kaart kiibiga, mis paigaldatakse tingimusliku juurdep\u00e4\u00e4su moodulisse (CAM), mille liides on CI, sama nagu igas kaasaegses televiisoris.<br \/>\n<img decoding=\"async\" alt=\"Kaabeltelevisiooni v\u00f5rgud k\u00f5ige v\u00e4iksematele. Osa 9: Peajaam\" src=\"\/wp-content\/uploads\/2019\/06\/5d54790c4165b47f783ee1457a2baabc.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nTegelikult toimub kogu matemaatika moodulis, samas kui kaart sisaldab v\u00f5tmete komplekti. Operaator saab voogu \u0161ifreerida kaart, mida kaart (ja kuhu operaator on ise v\u00f5ti salvestanud) tunneb, ja seega hallata tellimuste koosseisu kuni kaardi t\u00e4ieliku v\u00e4ljal\u00fclitamiseni s\u00fcsteemist, muutes peamise 'operaatori' identifikaatori. See on vaid \u00fcldine kirjeldus tingimusliku juurdep\u00e4\u00e4su s\u00fcsteemide toimimisest, tegelikult on neid palju erinevaid: \u00fchelt poolt purustatakse neid pidevalt, aga teiselt poolt keerulisemad algoritmid, aga see on juba t\u00e4iesti teine \u200b\u200blugu...<\/p>\n<p>Kuna operaator pakub oma v\u00f5rgus ka tasulisi kanalipakette, on vajalik neid enne v\u00f5rku edastamist kodeerida. Seda \u00fclesannet t\u00e4idab kolmanda osapoole tingimusliku juurdep\u00e4\u00e4su s\u00fcsteemi varustus, mida operaator kasutab teenusena. Peajaama paigaldatud seade tagab tingimusliku juurdep\u00e4\u00e4su s\u00fcsteemi toimimise: nii kr\u00fcpteerimise kui ka smart-kaardidesse kirjutatud v\u00f5tmete kontrolli.<\/p>\n<p>P.S. Keegi ei aidanud mind DOCSIS artikli osas, kui kellelgi on soov \u2014 oleksin r\u00f5\u00f5mus, kirjutage.<br \/>\n<br \/>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455858\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0413\u043e\u043b\u043e\u0432\u043d\u0430\u044f \u0441\u0442\u0430\u043d\u0446\u0438\u044f \u0441\u043e\u0431\u0438\u0440\u0430\u0435\u0442 \u0441\u0438\u0433\u043d\u0430\u043b\u044b \u0441 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432, \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0435\u0442 \u0438\u0445 \u0438 \u0432\u0435\u0449\u0430\u0435\u0442 \u0432 \u043a\u0430\u0431\u0435\u043b\u044c\u043d\u0443\u044e \u0441\u0435\u0442\u044c. \u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435 \u0441\u0435\u0440\u0438\u0438 \u0441\u0442\u0430\u0442\u0435\u0439 \u0427\u0430\u0441\u0442\u044c 1: \u041e\u0431\u0449\u0430\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 \u0441\u0435\u0442\u0438 \u041a\u0422\u0412 \u0427\u0430\u0441\u0442\u044c 2: \u0421\u043e\u0441\u0442\u0430\u0432 \u0438 \u0444\u043e\u0440\u043c\u0430 \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 3: \u0410\u043d\u0430\u043b\u043e\u0433\u043e\u0432\u0430\u044f \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 4: \u0426\u0438\u0444\u0440\u043e\u0432\u0430\u044f \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 5: \u041a\u043e\u0430\u043a\u0441\u0438\u0430\u043b\u044c\u043d\u0430\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u0435\u043b\u044c\u043d\u0430\u044f \u0441\u0435\u0442\u044c \u0427\u0430\u0441\u0442\u044c 6: \u0423\u0441\u0438\u043b\u0438\u0442\u0435\u043b\u0438 RF-\u0441\u0438\u0433\u043d\u0430\u043b\u0430 \u0427\u0430\u0441\u0442\u044c 7: \u041e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u043f\u0440\u0438\u0451\u043c\u043d\u0438\u043a\u0438 \u0427\u0430\u0441\u0442\u044c 8: \u041e\u043f\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26561,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-35405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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