G byte - One billion (109) bytes. Not to be confused with gigabyte (230 bytes).
G - Giga. An SI prefix for denominations of 1 billion (109).
Galaxy Group - The group of companies proposing the Galaxy watermarking format. (IBM/NEC, Hitachi/Pioneer/Sony.)
GB - Gigabyte.
Gbps - Gigabits/second. Billions (109) of bits per second.
gigabyte - 1,073,741,824 (230) bytes. See the end of Chapter 1 (p. 12) for more information.
GOP - Group of pictures. In MPEG video, one or more I pictures followed by P and B pictures. A GOP is the atomic unit of MPEG video access. GOPs are limited in DVD-Video to 18 frames for 525/60 and 15 frames for 625/50.
gray market - Dealers and distributors who sell equipment without proper authorization from the manufacturer.
Green Book - The document developed in 1987 by Philips and Sony as an extension to CD-ROM XA for the CD-i system.
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