Green Book (CD standard) Green Book (CD standard) The "Green Book", formally known as the "CD-i Full Functional Specification", is a CD standard announced in 1986 by Philips and Sony that defines the format for interactive, multimedia compact discs designed for CD-i players. The standard was originally not freely available and had to be licensed from Philips. However, the 1994 version of the standard was eventually made available free by Philips. CD-i discs conform to the "Red Book" specification of audio CDs (CD-DA). Tracks on a CD-i's program area can be CD-DA tracks or CD-i tracks, but the first track must always be a
Philips CD-i completely arrange the whole album in their own personal way with over 15,000 points of customization. CD-i has a series of learning games ("edutainment") targeted at children from infancy to adolescence. Those intended for a younger audience included "Busytown", "The Berenstain Bears" and various others which usually had vivid cartoon-like settings accompanied by music and logic puzzles. Although extensively marketed by Philips, notably via infomercial, consumer interest in CD-i titles remained low. By 1994, sales of CD-i systems had begun to slow, and in 1998 the product line was dropped. Philips had by then already sold its gaming subsidiary, Philips