{"id":376,"date":"2015-08-08T15:09:00","date_gmt":"2015-08-08T15:09:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/digital-tvsystem-layer-and-mpeg-2-packets\/"},"modified":"2015-08-08T15:09:00","modified_gmt":"2015-08-08T15:09:00","slug":"digital-tvsystem-layer-and-mpeg-2-packets","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/digital-tvsystem-layer-and-mpeg-2-packets\/","title":{"rendered":"DIGITAL TV:SYSTEM LAYER AND MPEG-2 PACKETS"},"content":{"rendered":"<div class=\"oxstc6a0dc85330d75\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '61e5902552e2353963d8d2f1bd1f4a8f',\n\t\t'format' : 'iframe',\n\t\t'height' : 250,\n\t\t'width' : 300,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/61e5902552e2353963d8d2f1bd1f4a8f\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.oxstc6a0dc85330d75 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.oxstc6a0dc85330d75 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.oxstc6a0dc85330d75 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.oxstc6a0dc85330d75 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.oxstc6a0dc85330d75 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h4 align=\"justify\"><em><u>SYSTEM LAYER AND MPEG-2 PACKETS<\/u><\/em><\/h4>\n<p align=\"justify\">The <i>syste<\/i><i>m layer <\/i>permits a datastream to be integrated into a programme multiplex. Fig. 12.10 indicates the structure of a MPEG-2 packet: the sync word, the data itself and a checksum. The packets are separate for video, audio and programme data, and are combined into a programme stream (Fig. 12.11) together with Programme Speci\ufb01c Information (PSI), the key to the demultiplexing and decoding operations at the receiving end. <\/p>\n<h5 align=\"justify\">PSI<\/h5>\n<p align=\"justify\">Programme Speci\ufb01c Information is added to the transport stream, and describes its composition, including information on which data- streams (audio, video, data) go together. The decoder depends on PSI to demultiplex, decode, assemble and present MPEG programmes; also for the extraction of conditional access information to descramble and de-encrypt programme elementary streams. Components of the PSI are look-up tables for Programme Association; Programme Map; Network Information; and Conditional Access. <\/p>\n<p align=\"justify\"><a href=\"http:\/\/lh3.googleusercontent.com\/-ulAC8wE3rUA\/VcYblB0_BPI\/AAAAAAAB1Dg\/ImtJU_h2v6k\/s1600-h\/DIGITAL%252520TV-0156%25255B2%25255D.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"DIGITAL TV-0156\" border=\"0\" alt=\"DIGITAL TV-0156\" src=\"http:\/\/lh3.googleusercontent.com\/-NAO58HyCw7c\/VcYbm3nTTHI\/AAAAAAAB1Do\/-SGIO0vLjvs\/DIGITAL%252520TV-0156_thumb.jpg?imgmax=800\" width=\"244\" height=\"83\" \/><\/a><a href=\"http:\/\/lh3.googleusercontent.com\/-UYaSiUX9LHM\/VcYboQ6ACRI\/AAAAAAAB1Dw\/srqviTgu32I\/s1600-h\/DIGITAL%252520TV-0157%25255B2%25255D.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"DIGITAL TV-0157\" border=\"0\" alt=\"DIGITAL TV-0157\" src=\"http:\/\/lh3.googleusercontent.com\/-XSYKlRbGabs\/VcYbp04JGQI\/AAAAAAAB1D4\/Q60jMaM4NTY\/DIGITAL%252520TV-0157_thumb.jpg?imgmax=800\" width=\"244\" height=\"107\" \/><\/a><a href=\"http:\/\/lh3.googleusercontent.com\/-3rJCj1aSPe0\/VcYbrfQSwvI\/AAAAAAAB1EA\/V7R5t9X6wz4\/s1600-h\/DIGITAL%252520TV-0158%25255B2%25255D.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-bottom: 0px; border-left: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top: 0px; border-right: 0px; padding-top: 0px\" title=\"DIGITAL TV-0158\" border=\"0\" alt=\"DIGITAL TV-0158\" src=\"http:\/\/lh3.googleusercontent.com\/-yVPKfc5JTmM\/VcYbsyYP-aI\/AAAAAAAB1EI\/7S9CCHmohWU\/DIGITAL%252520TV-0158_thumb.jpg?imgmax=800\" width=\"244\" height=\"122\" \/><\/a> <\/p><div class=\"lvzpx6a0dc85330e92\" ><script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-0778475562755157\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- 300x600 television-and-video -->\n<ins class=\"adsbygoogle\"\n     style=\"display:inline-block;width:300px;height:600px\"\n     data-ad-client=\"ca-pub-0778475562755157\"\n     data-ad-slot=\"6549443290\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.lvzpx6a0dc85330e92 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.lvzpx6a0dc85330e92 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.lvzpx6a0dc85330e92 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.lvzpx6a0dc85330e92 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.lvzpx6a0dc85330e92 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"rymto6a0dc85330e10\" ><script type=\"text\/javascript\">\n\tatOptions = {\n\t\t'key' : '0c1eb4c533eaedb7b996f49a5a4983a9',\n\t\t'format' : 'iframe',\n\t\t'height' : 300,\n\t\t'width' : 160,\n\t\t'params' : {}\n\t};\n<\/script>\n<script type=\"text\/javascript\" src=\"\/\/www.highperformanceformat.com\/0c1eb4c533eaedb7b996f49a5a4983a9\/invoke.js\"><\/script><\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.rymto6a0dc85330e10 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.rymto6a0dc85330e10 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.rymto6a0dc85330e10 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.rymto6a0dc85330e10 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.rymto6a0dc85330e10 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\">\n<p align=\"justify\"><i><\/i> <\/p>\n<p align=\"justify\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SYSTEM LAYER AND MPEG-2 PACKETS The system layer permits a datastream to be integrated into a programme multiplex. Fig. 12.10 indicates the structure of a MPEG-2 packet: the sync word, the data itself and a checksum. The packets are separate for video, audio and programme data, and are combined into a programme stream (Fig. 12.11) [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/digital-tvsystem-layer-and-mpeg-2-packets\/\" class=\"more-link\" >Continue reading&#8230;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"aioseo_notices":[],"views":613,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/376"}],"collection":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/comments?post=376"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/376\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=376"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}