{"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\/pl\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya","title":{"rendered":"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/e2ecba3816d8e6d1e6b4a29c70d864e1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nStacja g\u0142\u00f3wna zbiera sygna\u0142y z kilku \u017ar\u00f3de\u0142, przetwarza je i nadaje w sieci kablowej.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Zawarto\u015b\u0107 serii artyku\u0142\u00f3w<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">Cz\u0119\u015b\u0107 1: Og\u00f3lna architektura sieci KTV<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Cz\u0119\u015b\u0107 2: Sk\u0142ad i forma sygna\u0142u<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">Cz\u0119\u015b\u0107 3: Analogowa sk\u0142adowa sygna\u0142u<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">Cz\u0119\u015b\u0107 4: Cyfrowa sk\u0142adowa sygna\u0142u<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Cz\u0119\u015b\u0107 5: Coaksjalna sie\u0107 dystrybucyjna<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">Cz\u0119\u015b\u0107 6: Wzmacniacze sygna\u0142u RF<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">Cz\u0119\u015b\u0107 7: Odbiorniki optyczne<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455355\/\">Cz\u0119\u015b\u0107 8: Optyczna sie\u0107 magistralna<\/a><\/noindex><\/li>\n<li>Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa<\/li>\n<li>Cz\u0119\u015b\u0107 10: Wyszukiwanie i usuwanie usterek w sieci KTV<\/li>\n<\/ul>\n<p>\nNa Habrze jest ju\u017c \u015bwietny artyku\u0142 o budowie stacji g\u0142\u00f3wnej: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/165643\/\">Co znajduje si\u0119 wewn\u0105trz stacji g\u0142\u00f3wnej telewizji kablowej<\/a><\/noindex>. Nie b\u0119d\u0119 przerabia\u0142 tego swoimi s\u0142owami i po prostu polecam zainteresowanym zapozna\u0107 si\u0119 z nim. Opis tego, co mam w swoim zasi\u0119gu, wyszed\u0142by mniej interesuj\u0105co, poniewa\u017c nie mamy takiego zr\u00f3\u017cnicowania sprz\u0119towego, a ca\u0142\u0105 obr\u00f3bk\u0105 sygna\u0142\u00f3w zajmuj\u0105 si\u0119 szaszy AppearTV z r\u00f3\u017cnymi kartami rozszerze\u0144, kt\u00f3rych r\u00f3\u017cnorodno\u015b\u0107 pozwala na zamkni\u0119cie ca\u0142ej funkcjonalno\u015bci w kilku czterogniazdowych szaszy.<\/p>\n<p><img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/d3ab4fefde30a84e8e802842b8f9f8ef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/19e9cdaa190310cb7aac5d37434b3550.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Obrazek ze strony <noindex><a rel=\"nofollow\" href=\"https:\/\/deps.ua\/katalog\/ip-strimeryi\/appear-tv-xc5000-5100.html\">deps.ua<\/a><\/noindex><\/i><\/p>\n<p>Te urz\u0105dzenia umo\u017cliwiaj\u0105 kontrolowanie wszystkich proces\u00f3w przez funkcjonalny interfejs webowy, kt\u00f3ry zale\u017cy od sprz\u0119towego wyposa\u017cenia szaszy.<br \/>\n<img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/7badb1d32aad8d76825aa8ca6ed91fc4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nPonadto, nie zbieramy sygna\u0142u radiowego, dlatego nasza stacja antenowa wygl\u0105da mniej wi\u0119cej tak:<br \/>\n<img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/c01c936af6ece5a16f60f3f4321bcc7a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Obrazek z forum <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chipmaker.ru\/topic\/178360\/?do=findComment&amp;comment=3719772\">chipmaker.ru<\/a><\/noindex> Nie pozwolono mi opublikowa\u0107 prawdziwego zdj\u0119cia naszej stacji.<\/i><\/p>\n<p>Taka liczba anten jest niezb\u0119dna do odbioru kana\u0142\u00f3w z kilku satelit\u00f3w jednocze\u015bnie.<\/p>\n<p>Sygna\u0142 satelitarny jest zazwyczaj zaszyfrowany: jest to typ szyfrowania, w kt\u00f3rym symbole sekwencji s\u0105 mieszane wed\u0142ug okre\u015blonego algorytmu. Nie wymaga to du\u017cej mocy obliczeniowej ani czasu na realizacj\u0119, co oznacza, \u017ce sygna\u0142 jest przetwarzany bez op\u00f3\u017anie\u0144. W wersji sprz\u0119towej identyfikator abonenta (nawet je\u015bli jest to dostawca, kt\u00f3ry przesy\u0142a sygna\u0142 dalej do swojej sieci) to znana wszystkim karta z chipem, kt\u00f3ra wk\u0142ada si\u0119 do modu\u0142u dost\u0119pu warunkowego (CAM) z interfejsem CI, takim samym jak w ka\u017cdym nowoczesnym telewizorze.<br \/>\n<img decoding=\"async\" alt=\"Sieci telewizji kablowej dla najm\u0142odszych. Cz\u0119\u015b\u0107 9: Stacja czo\u0142owa\" src=\"\/wp-content\/uploads\/2019\/06\/5d54790c4165b47f783ee1457a2baabc.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nW\u0142a\u015bciwie wewn\u0105trz modu\u0142u odbywa si\u0119 ca\u0142a matematyka, a karta zawiera zestaw kluczy. Operator mo\u017ce szyfrowa\u0107 strumie\u0144 kluczami, kt\u00f3re zna karta (a sam operator je w niej zapisuje) i w ten spos\u00f3b zarz\u0105dza\u0107 zestawem subskrypcji a\u017c do ca\u0142kowitego odci\u0119cia karty od systemu, zmieniaj\u0105c podstawowy identyfikator 'operatora'. To tylko og\u00f3lny opis dzia\u0142ania system\u00f3w dost\u0119pu warunkowego, w rzeczywisto\u015bci istnieje wiele r\u00f3\u017cnych: z jednej strony s\u0105 nieustannie \u0142amane, a z drugiej strony algorytmy s\u0105 coraz bardziej skomplikowane, ale to ju\u017c zupe\u0142nie inna historia...<\/p>\n<p>Poniewa\u017c operator w swojej sieci r\u00f3wnie\u017c oferuje p\u0142atne pakiety kana\u0142\u00f3w, konieczne jest ich kodowanie przed przesy\u0142aniem do sieci. To zadanie realizuje sprz\u0119t zewn\u0119trznego dostawcy systemu dost\u0119pu warunkowego, kt\u00f3ry \u015bwiadczy t\u0119 us\u0142ug\u0119 operatorowi. Zainstalowany w stacji g\u0142\u00f3wnej sprz\u0119t zapewnia funkcjonowanie systemu dost\u0119pu warunkowego do tre\u015bci: zar\u00f3wno szyfrowanie, jak i kontrol\u0119 kluczy zapisanych w smart kartach.<\/p>\n<p>P.S. Nikt mi nie pom\u00f3g\u0142 w artykule o DOCSIS, je\u015bli kto\u015b ma ochot\u0119 \u2014 b\u0119d\u0119 wdzi\u0119czny, piszcie.<br \/>\n<br \/>\u0179r\u00f3d\u0142o: <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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