{"id":3804,"date":"2008-04-30T07:19:20","date_gmt":"2008-04-30T11:19:20","guid":{"rendered":"https:\/\/www.cavsi.com\/blog\/que-es-un-disco-optico\/"},"modified":"2008-04-30T07:19:20","modified_gmt":"2008-04-30T11:19:20","slug":"que-es-un-disco-optico","status":"publish","type":"post","link":"https:\/\/www.cavsi.com\/espanol\/blog\/que-es-un-disco-optico\/","title":{"rendered":"\u00bfQu\u00e9 es un Disco Optico?"},"content":{"rendered":"<p><strong>Disco \u00f3ptico tambi\u00e9n llamado disco compacto o discos \u00f3pticos de laser almacenan mayor informaci\u00f3n que los discos magn\u00e9ticos. <\/strong>Los discos opticos pueden ser grabados mediante \u00f3ptica digital o magneto-\u00f3ptica digital. Son discos \u00f3pticos los CDs, DVDs, los Blu-ray, HD-DVD, etc.<\/p>\n<p>La informaci\u00f3n se almacena en el disco compacto o compact disc (CD) en forma digital (l\u00f3gica binaria), de modo semejante a los de audio. Sobre una capa de vidrio y sustancias pl\u00e1sticas se graban, con un haz de l\u00e1ser, los agujeros o marcas que posteriormente detectar\u00e1 la unidad lectora. La lectora, mediante t\u00e9cnicas \u00f3pticas, con un rayo l\u00e1ser de baja potencia, garantiza que no va a sufrir ning\u00fan da\u00f1o f\u00edsico.<\/p>\n<p>Gracias a la precisi\u00f3n de esta t\u00e9cnica, se permiten disponer grandes cantidades de informaci\u00f3n en un espacio muy reducido. Cada bit en estos tipos de discos de llama pit.<br \/>\nUn inconveniente es que en la mayor\u00eda de estos dispositivos, una vez grabados no pueden ser reutilizados para escribir. Ello nos obliga a construir dispositivos de memoria de s\u00f3lo lectura.<\/p>\n<p><strong>Ventajas de usar discos \u00f3pticos<\/strong><br \/>\n\u20ac\u00a2 Gran compactaci\u00f3n: Pueden almacenar entre 60 y 100 veces m\u00e1s datos que un disco magn\u00e9tico de igual di\u00e1metro.<br \/>\n\u20ac\u00a2 Acceso directo: Similar al modo de acceso de los discos magn\u00e9ticos.<br \/>\n\u20ac\u00a2 Alta velocidad: El tiempo de acceso es muy similar al de los discos magn\u00e9ticos y la velocidad de transferencia es mayor debido a la mayor densidad de grabaci\u00f3n.<br \/>\n\u20ac\u00a2 Bajo costo El soporte y el lector son de costes muy atractivos frente a los altos costos de los discos duros magn\u00e9ticos.<\/p>\n<p><strong>CD-R<\/strong><br \/>\nLos <strong>CD-R<\/strong>, son la versi\u00f3n grabable de los <strong>CDs<\/strong>. El fundamento de estos soportes es una sustancia que cambia de fase al ser irradiada con un l\u00e1ser m\u00e1s potente que el de los lectores de CD normales, apareciendo entonces para la lectura como si hubiera pits an\u00e1logamente a los CD generados a partir de un master.<br \/>\nTambi\u00e9n es posible encontrar sustancias en las que el cambio de fase sea reversible, dando lugar a CD gravables y borrables, an\u00e1logos a los discos duros. Actualmente ya hay versiones comercializadas.<\/p>\n<p><strong>WORM<\/strong><br \/>\nActualmente existen otro tipo de discos \u00f3pticos gravables por el usuario, son los conocidos como WORM, se graban una vez pero se pueden leer m\u00faltiples veces. Una evoluci\u00f3n de estos son los conocidos como discos magneto\u00f3ptcos, compatibles con los anteriores pero que admiten borrar la informaci\u00f3n lo cual permite la reescritura.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Disco \u00f3ptico tambi\u00e9n llamado disco compacto o discos \u00f3pticos de laser almacenan mayor informaci\u00f3n que los discos magn\u00e9ticos. Los discos opticos pueden ser grabados mediante \u00f3ptica digital o magneto-\u00f3ptica digital. Son discos \u00f3pticos los CDs, DVDs, los Blu-ray, HD-DVD, etc.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[83],"tags":[197],"class_list":["post-3804","post","type-post","status-publish","format-standard","hentry","category-hardware","tag-medios-de-almacenamiento"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfQu\u00e9 es un Disco Optico? - CAVSI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cavsi.com\/espanol\/blog\/que-es-un-disco-optico\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00bfQu\u00e9 es un Disco Optico? - CAVSI\" \/>\n<meta property=\"og:description\" content=\"Disco \u00f3ptico tambi\u00e9n llamado disco compacto o discos \u00f3pticos de laser almacenan mayor informaci\u00f3n que los discos magn\u00e9ticos. 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