CD player in 1970. Following litigation, Sony and Philips licensed Russell's patents (then held by a Canadian company, Optical Recording Corp.) in the 1980s. The Compact Disc is an evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality digital audio signals. Prototypes were developed by Philips and Sony independently in the late 1970s. In 1979, Sony and Philips set up a joint task force of engineers to design a new digital audio disc. After a year of experimentation and discussion, the "Red Book" CD-DA standard was published in 1980. After their
Philips Classics Records Parent Universal Music merged the label into Decca Records. The name Philips Classics still exists but appears on no new recordings, and the Philips Classics Internet presence is within Decca's website. Philips Classics Records Philips Classics Records was started in the 1980s as the new classics record label for Philips Records. It was successful with artists including Alfred Brendel, Sir John Eliot Gardiner, Sir Neville Marriner and the Academy of St. Martin in the Fields, Mitsuko Uchida, Julian Lloyd Webber, Sir Colin Davis and André Rieu. A notable product released under the label is the 180-CD "The Complete Mozart Edition",