Orange Book is a standard defined by Sony and Philips (1990) re writing techniques on magnetic optical drives (Part I) CD-WORM, CD-WO or CD-R (Part II). In Part II the construction of a Multisession CD was defined. Part III was included in 1995 and defines the rewritable CD, the CD-RW.
Orange Book Part II: CD - R Volume 1: 1x/2x/4x
The current version of: "Orange Book Part II: CD-R, Version 3.1", defining 1x, 2x and 4x recording speeds is renamed into: "Orange Book Part II: CD-R, Volume 1: 1x/2x/4x, Version 3.1".
Orange Book Part II: CD - R Volume 2: Multi Speed
This standard defines linear recording speeds up to 16 times nominal CD speed.
With Orange Book, Part II: CD-R, Volume 2: Multi-Speed, a.o. a new spot for test write conditions and the Media IDentification is introduced.
In order to synchronise Orange Book, Part III: CD-RW, Volume 2: High-Speed it is planned to publish an update of this Part III volume 2, with the MID code and a test spot similar to CD-R Multi-Speed, with the introduction of the Orange Book, Part II: CD-R, Volume 2: Multi-Speed version 1
Orange Book Part III: CD - RW, Volume 2: High Speed
This standard defines linear recording speeds between 4x and 10x nominal CD speed, which includes the capability to use the disc at a Constant Angular recording Velocity of about 32 revolutions/second.