G
game port -
On a personal computer, a port
used to connect devices such as joysticks and paddles.
GDT
-
general
purpose interface bus -
An adapter that controls
the interface between the PC, Personal Computer XT*, or Personal Computer
AT* and, for example, the InfoWindow display; also known as the IBM IEEE
488.
genlock -
A
device that comes on an adapter or plugs into a computer port and provides
the technology to overlay computer-generated titles and graphics onto video
images. It does this by phase-locking the sync generation
of two video signals together so they can be merged. Genlock also converts
a digital signal to NTSC or PAL format. (For example, flying logos and
scrolling text on television shows are overlaid using a genlock.)
glass
master -
The final videodisc format from which
copies are made.
Global Descriptor Table (GDT)
-
Defines code and data segments available to
all tasks in an application.
GOCA -
Graphic
Object Content Architecture.
Graphic Object Content
Architecture (GOCA) -
(1) A data format for
multimedia products. (2) A push button with graphic, two-state, and animation
capabilities.
graphics overlay -
The
nature of dual plane video systems makes it possible to place graphics over
video. Only the pels of the designated transparent color allows the video
to show through. All other graphics pels appear on top of the video. Note
that the video still exists in the video buffer under the non-transparent
graphics pels.
graphics plane -
In
a dual plane video system, the graphics plane contains material drawn or
generated by the graphics adapter. The graphics plane will be combined
with the video plane to create an entire display image.
grayscale
-
greyscale
-
When video is displayed in shades of black
and white.
grouping -
For
Media Control Interface devices, refers to the ability to associate dissimilar
devices for a common purpose. Grouping MCI devices aids resource management
by insuring that all devices in a group are kept together.
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