{"id":309,"date":"2015-08-25T14:36:00","date_gmt":"2015-08-25T14:36:00","guid":{"rendered":"http:\/\/machineryequipmentonline.com\/video-equipment\/uncategorized\/video-disc-technologyvideo-disc-technology\/"},"modified":"2015-08-25T14:36:00","modified_gmt":"2015-08-25T14:36:00","slug":"video-disc-technologyvideo-disc-technology","status":"publish","type":"post","link":"http:\/\/machineryequipmentonline.com\/video-equipment\/video-disc-technologyvideo-disc-technology\/","title":{"rendered":"VIDEO DISC TECHNOLOGY:VIDEO DISC TECHNOLOGY."},"content":{"rendered":"<div class=\"ggity6a0dbade32fae\" ><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.ggity6a0dbade32fae {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.ggity6a0dbade32fae {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.ggity6a0dbade32fae {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.ggity6a0dbade32fae {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.ggity6a0dbade32fae {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<h4 align=\"justify\">VIDEO DISC TECHNOLOGY<\/h4>\n<p align=\"justify\">Video-recorded discs have never enjoyed the popularity of videotape cassettes for several reasons, among which are the fact that (with the exception of advanced DVD types) it is not possible to record on them at home; even though they are cheaper to produce in bulk, they have tended to be more expensive in the shops than tape; and software availability is not as good as for tape. On the credit side they give much better, more detailed pictures than everyday videotape formats, and they do not wear because their play process is a contact-free one. Because of their picture and sound replay quality video disc players \ufb01nd their best market among home-cinema enthusiasts, many of whom import discs from the USA (where there is a wider choice of \ufb01lms and a different censorship scheme) and take advantage of the multistandard capability of most LDV players and many TV sets.  <\/p>\n<h4 align=\"justify\">LASERVISION<\/h4>\n<p align=\"justify\">Laservision is the longest-established optical video disc system, having started in 1972 with Philips. It offers virtually full-broadcast bandwidth, and is the only home video system capable of handling an analogue colour signal <i>en-suite <\/i>as it were: conventional videocas- sette formats require the chroma subcarrier to be frequency-shifted in a colour-under system, and low-band ones (standard-VHS and Video8) relimitedtoabout2.5MHzluminancebandwidth.ForLaser- vision the vision and sound information is encoded on the disc in the form of a series of tiny pits in its surface, which is then aluminised and sealed with a coat of plastic. Ordinary video discs are 30 cm (12 inches) in diameter, and double-sided. The signal-bearing pits are arranged in a continuous spiral, starting near the disc centre and \ufb01nishing at the outside edge. They are very closely spaced at around 600 lines per mm, giving a total track length of about 34 km, 21 miles. The readout system is optical, and the pick-up sensor does not touch the disc at all \u2013 it depends on re\ufb02ections from the pitted surface. Thus there is no wear or deterioration of the disc, even in still-frame. Since the optical system focuses on the subsurface pits, dust, \ufb01ngerprints and (within reason) super\ufb01cial damage to the disc surface have no effect on reproduction quality. The speci\ufb01cations and characteristics of the Laservision system are given in Table 20.1.  <\/p><div class=\"jlrdg6a0dbade331a7\" ><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.jlrdg6a0dbade331a7 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.jlrdg6a0dbade331a7 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.jlrdg6a0dbade331a7 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.jlrdg6a0dbade331a7 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.jlrdg6a0dbade331a7 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"bicku6a0dbade330b4\" ><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.bicku6a0dbade330b4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.bicku6a0dbade330b4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.bicku6a0dbade330b4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.bicku6a0dbade330b4 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.bicku6a0dbade330b4 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n\n<p align=\"justify\"><a href=\"http:\/\/lh3.googleusercontent.com\/-xM5z_1tYoIg\/Vdx9QvdJ30I\/AAAAAAAB1j0\/h_gJCi1mA4s\/s1600-h\/DIGITAL-CAMCORDERS-AND-VCRS-02392.jpg\"><img decoding=\"async\" loading=\"lazy\" style=\"background-image: none; border-right-width: 0px; margin: 0px auto; padding-left: 0px; padding-right: 0px; display: block; float: none; border-top-width: 0px; border-bottom-width: 0px; border-left-width: 0px; padding-top: 0px\" title=\"DIGITAL CAMCORDERS AND VCRS-0239\" border=\"0\" alt=\"DIGITAL CAMCORDERS AND VCRS-0239\" src=\"http:\/\/lh3.googleusercontent.com\/-DEkAp3i-AkA\/Vdx9TvrEQLI\/AAAAAAAB1kI\/j2qdD1Oy2WY\/DIGITAL-CAMCORDERS-AND-VCRS-0239_thu.jpg?imgmax=800\" width=\"244\" height=\"218\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>VIDEO DISC TECHNOLOGY Video-recorded discs have never enjoyed the popularity of videotape cassettes for several reasons, among which are the fact that (with the exception of advanced DVD types) it is not possible to record on them at home; even though they are cheaper to produce in bulk, they have tended to be more expensive [&hellip;]<br \/><a href=\"http:\/\/machineryequipmentonline.com\/video-equipment\/video-disc-technologyvideo-disc-technology\/\" 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":625,"_links":{"self":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/309"}],"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=309"}],"version-history":[{"count":0,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/posts\/309\/revisions"}],"wp:attachment":[{"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/media?parent=309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/categories?post=309"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/machineryequipmentonline.com\/video-equipment\/wp-json\/wp\/v2\/tags?post=309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}