game port -

On a personal computer, a port used to connect devices such as joysticks and paddles.

Global Descriptor Table.

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.

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.)

The final videodisc format from which copies are made.

Defines code and data segments available to all tasks in an application.

Graphic Object Content Architecture.

(1) A data format for multimedia products. (2) A push button with graphic, two-state, and animation capabilities.

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.

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.

See greyscale.

When video is displayed in shades of black and white.

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.