It took almost 10 years, however, before their idea was commercialized. In 1983, just a year after the introduction of the compact disc, Kees Schouhamer Immink and Joseph Braat presented the first experiments with erasable magneto-optical compact discs during the 73rd AES Convention in Eindhoven. Sony ceased manufacturing and sold the last of the players by March 2013. īy March 2011 Sony had sold 22 million MD players, but halted further development. Although it was designed to succeed the cassette tape, it did not manage to supplant it globally. MiniDiscs were very popular in Japan and found moderate success in Europe. Its successor, Hi-MD, would later introduce the option of linear PCM digital recording to meet audio quality comparable to that of a compact disc. The music format was based on ATRAC audio data compression, Sony's own proprietary compression code. Sony announced the MiniDisc in September 1992 and released it in November of that year for sale in Japan and in December in Europe, North America, and other countries. MiniDisc ( MD) is an erasable magneto-optical disc-based data storage format offering a capacity of 60, 74, and later, 80 minutes of digitized audio. The Sony MZ1, the first MiniDisc player, released in 1992. High-Definition Versatile Multilayer Disc (HD VMD).HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM.Blu-ray Disc ( BD): BD-R & BD-RE, Blu-ray 3D, Mini Blu-ray Disc, 4K Blu-ray ( Ultra HD Blu-ray).
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