Optical computer storage media

DVD (digital video disc or digital versatile disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind of digital data and has been widely used to store video programs (watched using DVD players), software and other computer files. DVDs offer significantly higher storage capacity than compact discs (CD) while having the same dimensions. A standard single-layer DVD can store up to 4.7 GB of data, a dual-layer DVD up to 8.5 GB. Dual-layer, double-sided DVDs can store up to a maximum o

Blu-ray (Blu-ray Disc or BD) is a digital optical disc data storage format designed to supersede the DVD format. It was invented and developed in 2005 and released worldwide on June 20, 2006, capable of storing several hours of high-definition video (HDTV 720p and 1080p). The main application of Blu-ray is as a medium for video material such as feature films and for the physical distribution of video games for the PlayStation 3, PlayStation 4, PlayStation 5, Xbox One, and Xbox Series X. The name refers to the blue laser used to read the disc, which allows information to be stored at a greater

flat and usually circular disc which encodes binary data, primarily used for physical data distribution and long-term archival

A CD-ROM (, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains data computers can read, but not write or erase. Some CDs, called enhanced CDs, hold both computer data and audio with the latter capable of being played on a CD player, while data (such as software or digital video) is only usable on a computer (such as ISO 9660 format PC CD-ROMs).

discontinued optical disc format

read-only optical disc for high-fidelity audio storage

optical disc medium for PlayStation Portable

CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can only be written once and read arbitrarily many times.

thumb|Logo of Compact Disc-ReWritable (CD-RW). thumb|CD-RW with distinctively darker data surface than a CD-R and a factory-pressed [[CD-ROM.]]

music single in the form of a standard size compact disc

DVD-RAM (DVD Random Access Memory) is a DVD-based disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers. DVD-RAM media have been used in computers as well as camcorders and personal video recorders since 1998.

thumb|right|250px|Conventional 12 cm disc (left) compared to 8 cm disc (right) thumb|A Sony camcorder using MiniDVD media

The DualDisc is a double-sided optical disc developed by a group of record companies including MJJ Productions Inc., EMI Music, Universal Music Group, Sony BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group, and later supported by the Recording Industry Association of America (RIAA). It featured an audio layer intended to be compatible with CD players (but too thin to meet Red Book CD specifications) on one side and a standard DVD layer on the other. In this respect it was similar to, but distinct from, the DVDplus developed in Europe by Dieter Dierks and covered by Europ

CD with a smaller diameter and one third the storage capacity of a standard 120 mm disc

certification mark

derivative of the DVD+R format disc that employ two recordable dye layers

M-DISC (Millennial Disc) is a write-once optical disc technology introduced in 2009 by Millenniata, Inc. and available as DVD and Blu-ray discs.

derivative of the DVD-R format standard

DVD-Ds, also referred to as disposable DVDs, were a type of disposable digital versatile disc/digital video disc that were designed to be used for a maximum 48 hours after the containing package is opened. After this time, the DVDs became unreadable to DVD players because they contained a chemical that, after the set period of time, will prevent the underlying data from being read by DVD drives. The medium in itself was copy protection neutral and did not require additional digital rights management types of applications to be installed for the content to be accessible.

optical disc format

optical disc

optical disc recording technology

Optical Disc Storage Format

method used to identify optical discs

format for writable optical discs

type of disc

windows file system for CD and DVD

The DVDplus is a dual-sided disc similar to the DualDisc. It is an optical disc storage technology that combines the technology of DVD and CD in one disc. A DVD and a CD-compatible layer are bonded together to provide a multi-format hybrid disc. DVDplus, like DualDisc, is not a new format as such: it combines two existing formats, DVD and CD, to produce a new product.

Blu-Ray Disc that can be written to once with an optical disc recorder

storage technology