One Or Two Facts About How A Cd Was Made?
Answer:
The compact disc is a spin-off of the much less successful Laserdisc technology, having research on it by efforts of Sony and Philips Consumer Electronics within year 1979 and launching it in 1982 for high quality audio.
Sony Contribution:
In Research, Sony
contributed the error-correction method call CIRC.
Philips Contribution:
Philips contributed the general manufacturing process and Eight-to-Fourteen Modulation (EFM). Manufacturing Process was base on video Laserdisc technology, However, EFM made CD worthable by offers both a long playing time and a high resilience against disc defect such as scratches and fingerprints.
Visit History of Compact Disc.
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