{"id":2672,"date":"2011-07-18T18:26:13","date_gmt":"2011-07-18T18:26:13","guid":{"rendered":"https:\/\/www.techopedia.com\/definition\/blu-ray-disk\/"},"modified":"2017-01-26T16:47:02","modified_gmt":"2017-01-26T16:47:02","slug":"blu-ray-disk","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd","title":{"rendered":"Blu-Ray Disk"},"content":{"rendered":"<h2><span id=\"what_does_blu-ray_disk_mean\">What Does Blu-Ray Disk Mean?<\/span><\/h2>\n<p>A Blu-ray disk (BD) is a high-capacity optical disk medium developed for recording, rewriting and playing back high definition video. It can store large amounts of data and was designed to supersede the DVD.\n<\/p>\n<p>Blu-ray was jointly developed by a group of personal computer and consumer electronics companies called the Blu-ray Disc Association. Blu-ray disks support higher resolutions and more advanced video and audio formats compared to DVDs.\n<\/p>\n<h2><span id=\"techopedia_explains_blu-ray_disk\">Techopedia Explains Blu-Ray Disk<\/span><\/h2>\n<p>Blu-ray technology gets its name from the blue-violet laser that is used to read Blu-ray disks. Compared to a DVD\u2019s red laser, a blue laser permits more information to be stored at a greater density. For example, while a DVD can store 15 GB per layer, a Blu-ray disk can store 25 GB per layer, and dual-layer disks can hold up to 50 GB.\n<\/p>\n<p>Compared to a DVD, Blu-ray also provides much higher resolution; while a DVD with standard definition can provide definition of 720&#215;480 pixels, Blu-ray high definition has 1920X1080 pixel resolution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does Blu-Ray Disk Mean? A Blu-ray disk (BD) is a high-capacity optical disk medium developed for recording, rewriting and playing back high definition video. It can store large amounts of data and was designed to supersede the DVD. Blu-ray was jointly developed by a group of personal computer and consumer electronics companies called the [&hellip;]<\/p>\n","protected":false},"author":7813,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","om_disable_all_campaigns":false,"footnotes":""},"definitioncat":[217],"class_list":["post-2672","definition","type-definition","status-publish","format-standard","hentry","definitioncat-hardware"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a Blu-Ray Disk (BD)? - Definition from Techopedia<\/title>\n<meta name=\"description\" content=\"This definition explains the meaning of Blu-Ray Disk and why it matters.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Blu-Ray Disk\" \/>\n<meta property=\"og:description\" content=\"This definition explains the meaning of Blu-Ray Disk and why it matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd\" \/>\n<meta property=\"og:site_name\" content=\"Techopedia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/techopedia\/\" \/>\n<meta property=\"article:modified_time\" content=\"2017-01-26T16:47:02+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@techopedia\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd\"},\"author\":{\"name\":\"Margaret Rouse\",\"@id\":\"https:\/\/www.techopedia.com\/#\/schema\/person\/f5dd538e31ee352d105b8af36c4268a5\"},\"headline\":\"Blu-Ray Disk\",\"datePublished\":\"2011-07-18T18:26:13+00:00\",\"dateModified\":\"2017-01-26T16:47:02+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd\"},\"wordCount\":170,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.techopedia.com\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd#respond\"]}],\"articleSection\":\"\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd\",\"url\":\"https:\/\/www.techopedia.com\/definition\/2600\/blu-ray-disk-bd\",\"name\":\"What is a Blu-Ray Disk (BD)? 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