Purple Book

For the book associated with the British Labour Party see Purple Book (Labour Party) and for that associated with polymers, chemistry see Compendium of Macromolecular Nomenclature

Purple Book is the informal name for Sony and Philips' specification document for the double-density compact disc (DDCD) format. The Purple Book format allows a CD to hold 1.3 Gigabytes by narrowing the track pitch from 1.6 to 1.1 micrometre s, and shortening the minimum pit length from 0.833 to 0.623 micrometres.

Rainbow Books

Red Book CD-DA CD-Text CD+G CD+EG Green Book CD-i CD-i Ready Yellow Book CD-ROM CD-ROM XA Mixed Mode CD Orange Book CD-MO CD-R CD-RW White Book VCD SVCD CD-i Bridge Blue Book E-CD/CD+ Beige Book PCD Scarlet Book SACD Purple Book DDCD Black Book Non-Standard Disc Format

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