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 Media BV, to French publisher Infogrames in 1997. Dutch eurodance duo 2 Unlimited released a CD-i compilation album in 1994 called "Beyond Limits" which contains standard CD tracks as well as CD-i-exclusive media on the disc. A large number of full motion video titles such as "Dragon's Lair" and "Mad Dog McCree" appeared on the system. One of these, "", is considered one of the stronger CD-i titles and was later ported to PC. The February 1994 issue of "Electronic Gaming Monthly" remarked that the CD-i's full motion video capabilities were its strongest point, and that nearly all of its