Optical storage
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Optical storage is a term from engineering referring to the storage of data on a optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light. An ancient example of optical storage is using a stick to draw in a patch of sand or dirt. A common modern technique used by computers involves a tiny beam of laser light precisely focused on a spinning disc. 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.
The term optical drive usually refers to a device in a computer that can read CD-ROMs or other optical discs.
[edit] See also
- Data storage device - The broader topic of all devices that store data.
- Optical disc - Modern optical discs such as CD-ROMs and related formats.
- 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.
- Optical Storage Technology Association - Industry trade association
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