In the year 1970 (match since 2513 to 2522), researchers of the company Philips. Use of laserdisc technology. Come try a throat sound, but for auto phati alone. The first method is to encrypt the wideband FM and PCM digital systems. By the end of the Decade, Philips and Sony show the underlying disk digital audio system.In 2522 Philips and Sony decided to cooperate. Joint engineering team, which has the task of system design in the new digital audio disk. The team is a member of Kees Immink and Toshitada Doi after one-year trial and debate. The team has released the Red Book standard, which is the standard for compact disk. The Party supported in the rueangkrabuan manufactured by Philips live production laserdisc technology. Philips also let the module method EFM, which can record sounds and scratch resistant ink strokes or fingerprints. While the Sony support, how to fix error code (error correction) Compact Disc Story documents the CIRC in Sparta by a member of the team, providing information to the many technical decisions, including selection of a random frequency. Playing time and disk diameter Philips has the compact disk "has been fabricated by a lot of people together to work together as a team," ("invented collectively by a large group of people working as a team.")The CD was produced in the industry for the first time in the world when first August 17 the 2525 by sheet production CD for music player (Audio CD) Later in the year, it's caused the CD for 2528 storage (CD-ROM) and subsequent CD that flip how life all over the world, it has happened in a few years, after a set of CD-ROM, that is, in recent years, 2533-sheet capable CDs that can be written to, it is write with. Which is the work of two big companies, think is Sony (Sony) and finlip (Phillips)
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