G
G- Giga. An SI prefix for denominations of 1 billion (109).
G byte- One billion (109) bytes. Not to be confused with GB or gigabyte (230 bytes).
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.
General Parameters (GPRMs)- GPRMs are used to store the users operational history and to modify a players behavior. DVD-Video players have 16 unique GPRMs. Each GRPM may store a fixed length, two-byte numerical value.
gigabyte- 1,073,741,824 (230) bytes.
Group of Audio Frames (GOF)- Group of Audio Frames. The data area of 1/30 second which is composed of 20 audio frames of Linear PCM Audio.
Group of Pictures (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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