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Glossary

acquisition window The image size specific to a video standard or camera resolution.

active line region The region of lines actively being stored. Defined by a line start (relative to

the vertical synchronization signal) and a line count.

active pixel region The region of pixels actively being stored. Defined by a pixel start (relative

to the horizontal synchronization signal) and a pixel count.

address Value that identifies a specific location (or series of locations) in memory.

area A rectangular portion of an acquisition window or frame that is controlled

and defined by software.

brightness A constant that is added to the red, green, and blue components of a color

pixel during the color decoding process.

buffer Temporary storage for acquired data.

bus A group of conductors that interconnect individual circuitry in a computer,

such as the PCI bus; typically the expansion vehicle to which I/O or other

devices are connected.

CCIR Comite Consultatif International des Radiocommunications. A committee

that developed standards for video signals. Also used to describe signals,

boards, and cameras that adhere to the CCIR standards.

color space The mathematical representation for a color. For example, color can be

described in terms of red, green, and blue; hue, saturation, and luma; or hue,

saturation, and intensity.

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National Instruments Printer PCI-1405 User Manual Page 23