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An optical disc is a flat, ... discs are usually between 7.6 and 30 cm (3.0 and 11.8 in) in diameter, with 12 cm (4.7 in) being the most common size.
The discbox slider (also called DBS) is a disc packaging concept in 100% carton board, found both in CD and DVD-sized packaging formats. The DBS is comparable with plastic jewel or amaray cases when it comes to size but holds more of the features of the LP style cases in terms of light weight and printability. The DBS case opens up from the ...
In the history of optical storage media there have been and there are different optical disc formats with different data writing/reading speeds.. Original CD-ROM drives could read data at about 150 kB/s, 1× constant angular velocity (CAV), [1] the same speed of compact disc players without buffering.
The file size of a disc image created in raw mode is always a multiple of 2,352 bytes (the size of a block). [25] Disc image formats that store raw CD-ROM sectors include CCD/IMG, CUE/BIN, and MDS/MDF. The size of a disc image created from the data in the sectors will depend on the type of sectors it is using.
The digital data on a CD begins at the center of the disc and proceeds toward the edge, which allows adaptation to the different sizes available. Standard CDs are available in two sizes. By far, the most common is 120 millimetres (4.7 in) in diameter, with a 74-, 80, 90, or 99-minute audio capacity and a 650, 700, 800, or 870 MiB (737,280,000 ...
An optical disc drive is a device in a computer that can read CD-ROMs or other optical discs, such as DVDs and Blu-ray discs. Optical storage differs from other data storage techniques that make use of other technologies such as magnetism, such as floppy disks and hard disks, or semiconductors, such as flash memory.
The video signal was stored as an analog format like a video cassette. The first digitally recorded optical disc was a 5-inch audio compact disc (CD) in a read-only format created by Sony and Philips in 1975. [53] The first erasable optical disc drives were announced in 1983, by Matsushita (Panasonic), [54] Sony, and Kokusai Denshin Denwa (KDDI ...
However the MiniDVD format has been mostly used as recordable discs in DVD-based camcorders during the 2000s; a single layer disc can record up to 30 minutes of standard definition video. [2] A number of movies and TV shows have also been released on the format in the mid-2000s, usually targeting children using low-cost small players.