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 CD-i rights from CDMATICS. In 1995 Philips introduced CD-Online, a service which provided the CD-i with full internet access (with a 14.4k modem), including online shopping, email, and support for networked multiplayer gaming on select CD-i games. The service required a CD-i player with DV cartridge, and an "Internet Starter Kit" which initially retailed for £99.99. Andy Stout, a writer for the official CD-i magazine, explained CD-Online: The CD-Online service went live in the UK on October 25, 1995 and in March 1996 in the Netherlands (for 399 guilders). The system was reportedly scheduled to launch in the US as "Web-i"