Glossary
active line region
active pixel region
A/D
ADC
address
ANSI
antichrominance filter
API
AQ_DONE
AQ_IN_PROGRESS
area
array
ASIC
aspect ratio
B
b
B
back porch
NI-IMAQ User Manual
the region of lines actively being stored; defined by a line start (relative to
VSYNC) and a line count
the region of pixels actively being stored; defined by a pixel start (relative
to HSYNC) and a pixel count
analog-to-digital
analog-to-digital converter—an electronic device, often an integrated
circuit, that converts an analog voltage to a digital number
character code that identifies a specific location (or series of locations)
in memory
American National Standards Institute
removes the color information from the video signal
application programming interface
signals that the acquisition of a frame or field is completed
signals that the acquisition of video data is in progress
a rectangular portion of an acquisition window or frame that is controlled
and defined by software
ordered, indexed set of data elements of the same type
Application-Specific Integrated Circuit—a proprietary semiconductor
component designed and manufactured to perform a set of specific
functions for a specific customer
the ratio of a picture or image's width to its height
bit—one binary digit, either 0 or 1
byte—eight related bits of data, an eight-bit binary number; also used to
denote the amount of memory required to store one byte of data
the area of the video signal between the rising edge of the horizontal sync
signal and the active video information
G-2
© National Instruments Corporation
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