An unalterable optical storage medium that allows large amounts of data to be permanently written to it. An optical disk is read using laser and magnetic technology and has a useful life span of more than one hundred years.
A digital storage system commonly used for mass storage.
A device used for very high-density storage of alphanumeric and graphic data.
A medium for writing, storing and reading data using lasers. Optical disks can store up to 6 gigabytes (6 billion bytes) - than most portable. There are three basic types: CD-ROM; WORM (write-once, read-many); EO (erasable optical) disks.
Also identified as "OD." A noncontact, random-access disk tracked by optical laser beams and used for mass storage and retrieval and digitized text and graphics. Information is recorded on a heat-sensitive material via a computer controlled laser beam which either melts the sensitive material or changes its color. This technology allows "reading" but not modification of large amounts of information making it suitable for short-term storage of high volume information for which active retrieval is a factor. Types include WORM (write once read many), CD-ROM (compact disc-read only memory), and compact disc-interactive).
A large-capacity data storage medium for computers, on which information is stored at extremely high density in the form of tiny pits.
A cartridge-like device on which data is stored and retrieved by an optical disk drive.
Medium that will accept and retain information in the form of marks or density modulation in a recording layer, that can be read with an optical beam.
a disk coated with plastic that can store digital data astiny pits etched in the surface; is read with a laser that scans the surface
a compact disk or CD
a storage medium of video data replacing a magnetic tape
Generic term for any disk read by a laser, including all CD-ROMs. In the NDLP production environment, the term is a shorthand for the write-once Panasonic disks sometimes used for contractor delivery, especially the "shuttle" disks used to transfer image files between us and the contractor.
(1) Two plates of glass bonded together with a vacuum created in the space between them. The inner surfaces of the glass are coated with a metallic substance. Both character and image data are burned into this surface with a high powered laser beam. The information is read from the disk using the same laser beam at a lower power. (2) An information storage device which has been recorded using lasers and is read using lasers. This includes both analog video/audio information discs (movies and interactive video) and digital audio/graphics/textual information discs (CD-ROM, CD-I, WORM, Laser cards). (7/96)
A storage medium commonly used for storing large volumes of data. CD-ROM, Rewritable, and WORM are the most common types of optical disks.
A data storage device having a disk whose coating can be altered to encode information. Data is read from the disk by means of a laser.
A disk that contains digital data readable by laser or magnetic means. CD-ROMs are one form of optical disk. go top
A flat, circular, plastic disk coated with material on which bits may be stored in the form of highly reflective areas and significantly less reflective areas, from which the stored data may be read when illuminated with a narrow-beam source, such as a laser diode.
A direct access disk written or read by light
A data storage medium that utilises laser technology to read information. CD-ROMs and WORM (Write Once Read Many) are examples of optical disks.
A plastic disk that can store information in a method so that it can be read by a laser. The laser is shot at the disk and, based on its reflection, the...
A disk read or written using light (generally laser light). Such a disk may store video, audio or digital data.
A type of recently developed high capacity computer storage disk which stores information in a mode similar to a CD-ROM but is erasable and reusable. to top
A storage medium read by a laser beam that can store several hundred megabytes of data. CD-ROMs are optical disks that can be read but cannot be erased, but erasable ones are also now available.
A storage medium that records and reproduces digital information using a laser beam.
Storage media that are based on optical rather than magnetic technologies, e.g. CD-ROMs, DVDs etc, where a laser reads 'pits' in the recorded surface of the disk. Phosphors These are materials that illuminate when struck by electrons. They produce the images on monitor screens. There are three different phosphors used, Red, Green, and Blue.
(Disque optique) : Disk whose reading and writing mechanisms use laser optics instead of magnetism. Their lifetime is probably long : more than 30 years for the support, but can we ensure to find decades later compatible reading mechanisms ? They can record relatively large quantities of data (500 MB in 1995), but their access time is slow.
discs that use tiny optically reflective particles to store data. A laser is used to read the reflective bits, and write data. Unlike CD-ROM, which is read-only, most optical disc systems are writable.
A noncontact, random-access disk tracked by optical laser beams and used for mass storage and retrieval of digitized text and graphics. Types include WORM (write once read many), CD-ROM (compact disk-read only memory), and CD compact disk (interactive), and erasable optical disks.
A digital data storage technology that uses optical media to store information. Optical disks are slower, but store more data and cost less per unit of stored data than magnetic disks. Several optical platters can be installed in a single device called a jukebox. Optical disks are used when very large amounts of data need to be stored.
a high-capacity storage medium that is read by a laser light.