While considering the theory and characteristics of optical disc technologies, this book also takes a look at the assemblies and circuits that allow CD-ROM and DVD players to function. Topics include the physical construction of the discs, the information-encoding process, Dolby AC-3 audio and MPEG-2 video programming, power supplies, optical pickup units, and microcontrollers. Annotation c. Book News, Inc., Portland, OR (booknews.com)