While considering the theory and characteristics of optical disc technologies, this book also takes a look at the assemblies and circuits that allow CDROM and DVD players to function. Topics include the physical construction of the discs, the informationencoding process, Dolby AC3 audio and MPEG2 video programming, power supplies, optical pickup units, and microcontrollers. Annotation c. Book News, Inc., Portland, OR (booknews.com)