CD-i Ready is a

compact disc The compact disc (CD) is a Digital media, digital optical disc data storage format co-developed by Philips and Sony to store and play digital audio recordings. It employs the Compact Disc Digital Audio (CD-DA) standard and was capable of hol ...

format for mixing audio and data content on a CD. It was developed by Phillips in 1991, based on the CD-i format. The CD-i Ready format uses a certain technique to get

audio CD Compact Disc Digital Audio (CDDA or CD-DA), also known as Digital Audio Compact Disc or simply as Audio CD, is the standard format for audio compact discs. The standard is defined in the '' Red Book'' technical specifications, which is why t ...

players to skim over the CD-i software and data. CD-i Ready places software and data in the

pregap The pregap on a Red Book audio CD is the portion of the audio track that precedes "index 01" for a given track in the table of contents (TOC). The pregap ("index 00") is typically two seconds long and usually, but not always, contains silence. P ...

of track 1 (index 0).Application Note 'CD-i Ready' disc
''Philips Interactive Media Systems'' - October 1991 Technical specification of the 'CD-i Ready' type disc. CD-i Ready is an Audio-CD with CD-i data located in the pre-gap before track 1. Contains info for producers of CD-i players and creators of CD-i titles. Most

CD player A CD player is an electronic device that plays audio compact discs, which are a digital audio, digital optical disc data storage format. CD players were first sold to consumers in 1982. CDs typically contain recordings of audio material such a ...

s skip the pregap area assuming it contains only silence. Because of this, CD-i Ready was presented as an alternative to CD-i (which stores data in the regular indexes of the first tracks of a disc), which was more compatible with audio CD players. The term " enhanced CD" is sometimes used to refer to different CD formats that support a mix of audio and data content. Apart from CD-i Ready and CD-i, these formats include mixed mode CDs and the

Enhanced Music CD The Blue Book is a compact disc standard developed in 1995 by Philips and Sony. It defines the Enhanced Music CD format (E-CD, also known as CD-Extra, CD-Plus and CD+), which combines CD-DA, audio tracks and CD-ROM, data tracks on the same disc. T ...

format.

References

Compact disc {{electronics-stub