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The Universal Media Disc (UMD) is a discontinued optical disc medium developed by Sony for use on its PlayStation Portable handheld gaming and multimedia platform. It can hold up to 1.8 gigabytes of data and is capable of storing video games, feature-length films, and music.
PSP (Universal Media Disc) Since no blank media or writer exists, the media itself cannot be copied, but one could make ISO image (a file version of the UMD) on a memory card. The unique format also made the media expensive and difficult to adapt. Xbox (DVD) Two sets of media descriptors are used.
Hi-MD is a magneto-optical disc-based data storage format. It was a further development of the MiniDisc . [ 1 ] With its release in late 2004, [ 2 ] came the ability to use newly developed, high-capacity 1 gigabyte Hi-MD discs, in the same dimensions as MiniDisc. [ 2 ]
English: Universal Media Disc, Minidisc and Compact Cassette - size comparison. The UMD was a very short lived format, and was an optical disc of about 1.8Gb capacity in a protective plastic case. It was the storage of choice for the Sony PSP which was their hand held Playstation. It was retired fairly swiftly.
The blank disc has a pre-groove track onto which the data are written. The pre-groove track, which also contains timing information, ensures that the recorder follows the same spiral path as a conventional CD. A CD recorder writes data to a CD-R disc by pulsing its laser to heat areas of the organic dye layer. The writing process does not ...
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