{"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\/ro\/blog\/news\/seti-kabelnogo-televideniya-dlya-samyh-malenkih-chast-9-golovnaya-stantsiya","title":{"rendered":"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/e2ecba3816d8e6d1e6b4a29c70d864e1.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nSta\u021bia principal\u0103 colecteaz\u0103 semnalele din mai multe surse, le proceseaz\u0103 \u0219i le transmite \u00een re\u021beaua de cablu.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><br \/>\n<b class=\"spoiler_title\">Con\u021binutul seriei de articole<\/b><\/p>\n<ul>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449322\/\">Partea 1: Arhitectura general\u0103 a re\u021belei CATV<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/449902\/\">Partea 2: Compozi\u021bia \u0219i forma semnalului<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450256\/\">Partea 3: Componenta analogic\u0103 a semnalului<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450258\/\">Partea 4: Componenta digital\u0103 a semnalului<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450278\/\">Partea 5: Re\u021beaua de distribu\u021bie coaxial\u0103<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/450452\/\">Partea 6: Amplificatoarele de semnal RF<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454542\/\">Partea 7: Recep\u021bionerele optice<\/a><\/noindex><\/li>\n<li><noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/455355\/\">Partea 8: Re\u021beaua optic\u0103 magistral\u0103<\/a><\/noindex><\/li>\n<li>Partea 9: Sta\u021bia de cap<\/li>\n<li>Partea 10: Diagnosticul \u0219i repararea re\u021belei CATV<\/li>\n<\/ul>\n<p>\nPe Habr exist\u0103 deja un articol minunat despre cum func\u021bioneaz\u0103 sta\u021bia principal\u0103: <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/165643\/\">Ce este \u00een interiorul sta\u021biei principale de televiziune prin cablu<\/a><\/noindex>. Nu voi reexprima cuvintele lor \u0219i v\u0103 voi recomanda pur \u0219i simplu s\u0103 v\u0103 familiariza\u021bi cu el. Descrierea a ceea ce am \u00een administrarea mea ar fi fost mai pu\u021bin interesant\u0103, deoarece nu avem o astfel de diversitate de echipamente, iar toat\u0103 procesarea semnalelor este realizat\u0103 de \u0219asiuri AppearTV cu diverse pl\u0103ci de extensie, ale c\u0103ror diversitate permite includerea tuturor func\u021bionalit\u0103\u021bilor \u00een c\u00e2teva \u0219asiuri de patru unit\u0103\u021bi.<\/p>\n<p><img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/d3ab4fefde30a84e8e802842b8f9f8ef.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n<img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/19e9cdaa190310cb7aac5d37434b3550.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Imagine de pe site-ul <noindex><a rel=\"nofollow\" href=\"https:\/\/deps.ua\/katalog\/ip-strimeryi\/appear-tv-xc5000-5100.html\">deps.ua<\/a><\/noindex><\/i><\/p>\n<p>Aceste dispozitive permit controlul tuturor proceselor printr-o interfa\u021b\u0103 web func\u021bional\u0103, care depinde de dotarea hardware a \u0219asiului.<br \/>\n<img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/7badb1d32aad8d76825aa8ca6ed91fc4.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u00cen plus, nu colect\u0103m semnalul radio, a\u0219a c\u0103 postul antenei arat\u0103 cam a\u0219a:<br \/>\n<img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/c01c936af6ece5a16f60f3f4321bcc7a.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Imagine de pe forum <noindex><a rel=\"nofollow\" href=\"https:\/\/www.chipmaker.ru\/topic\/178360\/?do=findComment&amp;comment=3719772\">chipmaker.ru<\/a><\/noindex> nu mi s-a permis s\u0103 postez o fotografie real\u0103 a sta\u021biei noastre.<\/i><\/p>\n<p>Aceast\u0103 cantitate de antene este necesar\u0103 pentru a recep\u021biona canale de la mai multe sateli\u021bi simultan.<\/p>\n<p>Semnalul satelitar este de obicei criptat: este un tip de criptare \u00een care simbolurile secven\u021bei sunt amestecate conform unui algoritm prestabilit. Aceasta nu necesit\u0103 o mare putere de calcul \u0219i timp de execu\u021bie, ceea ce \u00eenseamn\u0103 c\u0103 semnalul este procesat f\u0103r\u0103 \u00eent\u00e2rzieri. \u00cen form\u0103 hardware, identificatorul abonatului (chiar dac\u0103 este un provider care transmite semnalul mai departe \u00een re\u021beaua sa) este un card cu cip cunoscut, care se introduce \u00eentr-un modul de acces condi\u021bionat (CAM) cu interfa\u021b\u0103 CI, la fel ca \u00een orice televizor modern.<br \/>\n<img decoding=\"async\" alt=\"Re\u021bele de televiziune prin cablu pentru cei mici. Partea 9: Sta\u021bia principal\u0103\" src=\"\/wp-content\/uploads\/2019\/06\/5d54790c4165b47f783ee1457a2baabc.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nDe fapt, toat\u0103 matematica se desf\u0103\u0219oar\u0103 \u00een interiorul modulului, iar cardul con\u021bine un set de chei. Operatorul poate cripta fluxul cu cheile pe care le cunoa\u0219te cardul (iar operatorul le-a \u0437\u0430\u043f\u0438\u0441at \u00een card) \u0219i, astfel, poate gestiona setul de abonamente p\u00e2n\u0103 la deconectarea complet\u0103 a cardului de la sistem, schimb\u00e2nd identificatorul principal \u201eoperator\u201d. Aceasta este doar o descriere general\u0103 a func\u021bion\u0103rii sistemelor de acces condi\u021bionat, \u00een realitate exist\u0103 multe tipuri diferite: pe de o parte, acestea sunt constant sparte, iar pe de alt\u0103 parte, algoritmii devin tot mai complec\u0219i, dar aceasta este o alt\u0103 poveste...<\/p>\n<p>Deoarece operatorul ofer\u0103, de asemenea, pachete de canale premium \u00een re\u021beaua sa, este necesar\u0103 codificarea acestora \u00eenainte de a fi transmise \u00een re\u021bea. Aceast\u0103 sarcin\u0103 este realizat\u0103 de echipamentele unui furnizor ter\u021b al sistemului de acces condi\u021bionat, care ofer\u0103 acest serviciu operatorului. Echipamentul instalat la sta\u021bia principal\u0103 asigur\u0103 func\u021bionarea sistemului de acces condi\u021bionat la con\u021binut: at\u00e2t criptarea, c\u00e2t \u0219i controlul cheilor \u00eenscrise \u00een cardurile inteligente.<\/p>\n<p>P.S. Nimeni nu m-a ajutat cu articolul despre DOCSIS, dac\u0103 cineva este interesat \u2014 a\u0219 fi bucuros, scrie\u021bi-mi.<br \/>\n<br \/>Sursa: <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 5.0.2.1 - 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