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Sony Digital Audio Disc Corporation (Sony DADC) is a manufacturer of CDs, DVDs, UMDs, and Blu-ray Discs.The company has many plants worldwide. Although it primarily services Sony Music Entertainment-owned record labels, Sony Pictures Home Entertainment, and Sony Interactive Entertainment, it also manufactures discs for other labels, home entertainment distributors, and video game publishers.
Sony CDP-101 from 1982, the first commercially released CD player for consumers Philips CD100 from 1983, the first commercially released CD player in the USA and Europe American inventor James T. Russell is known for inventing the first system to record digital video information on an optical transparent foil that is lit from behind by a high ...
The DualDisc is a type of double-sided optical disc product developed by a group of record companies including MJJ Productions Inc., EMI Music, Universal Music Group, Sony BMG Music Entertainment, Warner Music Group, and 5.1 Entertainment Group [1] and later under the aegis of the Recording Industry Association of America ().
The company also manufactured their own brand of player, the Monarch automatic record changer, which could select and play 7", 10" and 12" records at 16, 33 1 ⁄ 3, 45 or 78 rpm, automatically intermixing differing disc sizes, although the speed had to be changed manually. [2]
Thus, to be heard in the proper sequence, each disc of a four-disc set would contain, respectively, "sides" 1&8, 2&7, 3&6 and 4&5 – a practice known as "automatic sequencing", "changer sequencing" or "auto-coupling". In pre-LP days, classical symphonies and concertos, and later, original cast albums, would be recorded using this format.
In developing and marketing it, Sony was trying to set the new standard for removable media to replace the 3½-inch diskette it had also helped create. MD Data competed in a format war with other disks such as SyQuest's EZ 135 , Imation's SuperDisk , and the Iomega Zip . [ 2 ]
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