- Optical storage
Optical storage is a term from engineering referring to the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light, usually a beam of laser light precisely focused on a spinning disc. An older example, that does not require the use of computers, is microform. There are other means of optically storing data and new methods are in development. Optical storage differs from other data storage techniques that make use of other technologies such as magnetism or semiconductors.
Optical storage can range from a single drive reading a single CD-ROM to multiple drives reading multiple discs such as an optical jukebox. Single compact discs can hold around 700MB (megabytes)and optical jukeboxes can hold much more.
It is estimated that in the year 2007, optical storage represents 27% of the world's technological capacity to store information.
- Data storage device - the broader topic of all devices that store data.
- Optical Media board disc - modern optical discs such as CD-ROMs and related formats.
- Optical Jukebox
- Optical disc drive
- Optical tape - more capacity than magnetic tape but not as cost effective
- Magneto-optical drive - combines Optical and Magnetic technologies to store data.
- Laser turntable - a device that optically reads mechanical data storage media.
- Holographic Data Storage Systems - potential new optical storage technology.
- 3D optical data storage - potential new optical storage technology.
- Optical Storage Technology Association - industry trade association
- ^ Compact Disc <http://en.wikipedia.org/wiki/Compact_Disc>
- ^ "The World’s Technological Capacity to Store, Communicate, and Compute Information", especially Supporting online material, Martin Hilbert and Priscila López (2011), Science (journal), 332(6025), 60-65; free access to the article through here: martinhilbert.net/WorldInfoCapacity.html
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