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 (family) was the addressee of many of her cousin Karl Marx's letters (e.g.) and later, a member of the Dutch section of the International. Lion's son Frederik Philips was a merchant banker who financed the setting up of the Philips lighting company which was run by his son Gerard Philips. After a few years Gerard was joined by his younger brother Anton Philips who revolutionised the fortunes of the company. Anton was succeeded by his son-in-law Frans Otten who was married to Anton's eldest daughter. During the war Anton fled to England in a company armoured payroll van along with Princess