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 popular TV game shows for the CD-i, including versions of "Jeopardy!" (hosted by Alex Trebek), "Name That Tune" (hosted by Bob Goen), and two versions of "The Joker's Wild" (one for adults hosted by Wink Martindale and one for kids hosted by Marc Summers). All CD-i games in North America (with the exception of "Name That Tune") had Charlie O'Donnell as announcer. The Netherlands also released its version of "Lingo" on the CD-i in 1994. In 1993, American musician Todd Rundgren created the first music-only fully interactive CD, "No World Order", for the CD-i. This application allows the user to