Blue Book (CD standard) Blue Book (CD standard) 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 audio tracks and data tracks on the same disc. The format was created as a way to solve the problem of mixed mode CDs, which were not properly supported by many CD players. The standard is not freely available and must be licensed from Philips. E-CDs are created through the "stamped multisession" technology, which creates two sessions on a disc. The first session of
Philips CD-i Console lineup. Games that were most heavily criticized include "Hotel Mario", "", "", and "Zelda's Adventure". EGM's Seanbaby rated "The Wand of Gamelon" as one of the worst video games of all time. However, "" was positively received by critics, and has often been held up as the standout title for the CD-i. In October 1994 Philips claimed an installed base of 1 million units for the CD-i. In 1996, the Wall Street Journal reported that total US sales amounted to 400,000 units. Philips CD-i The Philips CD-i (an abbreviation of Compact Disc Interactive) is an interactive multimedia CD player