{"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\/es\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya","title":{"rendered":"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/e2ecba3816d8e6d1e6b4a29c70d864e1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nLa estaci\u00f3n central recopila se\u00f1ales de varias fuentes, las procesa y las transmite a la red de cable.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Contenido de la serie de art\u00edculos<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">Parte 1: Arquitectura general de la red CATV<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Parte 2: Composici\u00f3n y formato de la se\u00f1al<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">Parte 3: Componente anal\u00f3gico de la se\u00f1al<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">Parte 4: Componente digital de la se\u00f1al<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Parte 5: Red de distribuci\u00f3n coaxial<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">Parte 6: Amplificadores de se\u00f1al RF<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">Parte 7: Receptores \u00f3pticos<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455355\/\">Parte 8: Red troncal \u00f3ptica<\/a><\/noindex><\/li>\n<li>Parte 9: Estaci\u00f3n central<\/li>\n<li>Parte 10: B\u00fasqueda y soluci\u00f3n de problemas en la red CATV<\/li>\n<\/ul>\n<p>\nEn Habr ya hay un excelente art\u00edculo sobre la estructura de la estaci\u00f3n central: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/165643\/\">Qu\u00e9 hay dentro de una estaci\u00f3n central de televisi\u00f3n por cable<\/a><\/noindex>. No voy a reescribirlo con mis propias palabras y simplemente recomiendo a los interesados que lo consulten. La descripci\u00f3n de lo que tengo bajo mi control ser\u00eda menos interesante, ya que no contamos con tal variedad de equipos, y todo el procesamiento de se\u00f1ales se lleva a cabo mediante chasis AppearTV con diversas tarjetas de expansi\u00f3n, cuya variedad permite concentrar todas las funcionalidades en unos pocos chasis de cuatro unidades.<\/p>\n<p><img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/d3ab4fefde30a84e8e802842b8f9f8ef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/19e9cdaa190310cb7aac5d37434b3550.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Imagen del sitio <noindex><a rel=\"nofollow\" href=\"https:\/\/deps.ua\/katalog\/ip-strimeryi\/appear-tv-xc5000-5100.html\">deps.ua<\/a><\/noindex><\/i><\/p>\n<p>Estos dispositivos permiten controlar todos los procesos a trav\u00e9s de una interfaz web funcional, que depende del hardware del chasis.<br \/>\n<img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/7badb1d32aad8d76825aa8ca6ed91fc4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nAdem\u00e1s, no recopilamos la se\u00f1al de aire, por lo que nuestra estaci\u00f3n de antenas se ve aproximadamente as\u00ed:<br \/>\n<img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/c01c936af6ece5a16f60f3f4321bcc7a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Imagen del foro <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chipmaker.ru\/topic\/178360\/?do=findComment&amp;comment=3719772\">chipmaker.ru<\/a><\/noindex> no se me permiti\u00f3 publicar una foto real de nuestra estaci\u00f3n.<\/i><\/p>\n<p>Tal cantidad de platos es necesaria para recibir canales de varios sat\u00e9lites simult\u00e1neamente.<\/p>\n<p>La se\u00f1al satelital suele estar protegida por encriptaci\u00f3n: es un tipo de cifrado en el que los caracteres de la secuencia se mezclan seg\u00fan un algoritmo determinado. No requiere gran potencia de c\u00e1lculo y tiempo de ejecuci\u00f3n, lo que significa que la se\u00f1al se procesa sin retraso. En t\u00e9rminos de hardware, el identificador del abonado (incluso si se trata de un proveedor que transmite la se\u00f1al a su red) es una tarjeta con chip, familiar para todos, que se inserta en un m\u00f3dulo de acceso condicional (CAM) con interfaz CI, igual que en cualquier televisor moderno.<br \/>\n<img decoding=\"async\" alt=\"Redes de televisi\u00f3n por cable para los m\u00e1s peque\u00f1os. Parte 9: Estaci\u00f3n central\" src=\"\/wp-content\/uploads\/2019\/06\/5d54790c4165b47f783ee1457a2baabc.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDentro del m\u00f3dulo se realiza toda la matem\u00e1tica, y la tarjeta contiene un conjunto de claves. El operador puede cifrar el flujo con las claves que conoce la tarjeta (que el propio operador ya ha registrado en ella) y, de esta manera, gestionar el conjunto de suscripciones hasta desconectar completamente la tarjeta del sistema, cambiando el identificador principal del \u00aboperador\u00bb. Esta es solo una descripci\u00f3n general del funcionamiento de los sistemas de acceso condicional; en realidad, existen muchos diferentes: por un lado, se rompen constantemente, y por otro, se complican los algoritmos, pero esa es otra historia\u2026<\/p>\n<p>Dado que el operador tambi\u00e9n ofrece paquetes de canales de pago en su red, es necesario codificarlos antes de su transmisi\u00f3n. Esta tarea es realizada por el equipo de un proveedor externo del sistema de acceso condicional, que se ofrece al operador como un servicio. El equipo instalado en la estaci\u00f3n central asegura el funcionamiento del sistema de acceso condicional al contenido: tanto el cifrado como el control de las claves registradas en las tarjetas inteligentes.<\/p>\n<p>P.D. Nadie me ayud\u00f3 con el art\u00edculo sobre DOCSIS, si alguien tiene ganas \u2013 estar\u00e9 encantado, cont\u00e1ctenme.<br \/>\n<br \/>Fuente: <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 5.0.2 - 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