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
Gay Sex in the 70s in New York during the 1970s, what the legacy of that time of sexual freedom is and how it continues to affect young people today. The following people are interviewed for the documentary. The film was awarded the GayVN Award for Best Alternative Release of 2006. Gay Sex in the 70s Gay Sex in the 70s is a 2005 American documentary film about gay sexual culture in New York City in the 1970s. The film was directed by Joseph Lovett and encompasses the twelve years of sexual freedom bookended by the Stonewall riots of 1969 and the recognition of AIDS