National Instruments IMAQ PCI-1422, User Manual

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Glossary
IMAQ PCI/PXI-1422 User Manual G-8 ni.com
RGB Color encoding scheme using red, green, and blue (RGB) color information
where each pixel in the color image is encoded using 32 bits: 8 bits for red,
8 bits for green, 8 bits for blue, and 8 bits for the alpha value (unused).
ribbon cable A flat cable in which the conductors are side by side.
ROI Region of interest. A hardware-programmable rectangular portion of the
acquisition window.
ROM Read-only memory.
RTSI bus Real-Time System Integration Bus. The National Instruments timing bus
that connects IMAQ and DAQ boards directly, by means of connectors on
top of the boards, for precise synchronization of functions.
S
s Seconds.
scaling down circuitry Circuitry that scales down the resolution of a video signal.
scatter-gather DMA A type of DMA that allows the DMA controller to reconfigure on-the-fly.
SDRAM Synchronous dynamic RAM.
SO-DIMM Small outline dual inline memory module.
SRAM Static RAM.
system RAM RAM installed on a personal computer and used by the operating system,
as contrasted with onboard RAM.
T
tap A stream of pixels from a camera. Some cameras send multiple streams, or
taps, of data over a cable simultaneously to increase transfer rate.
transfer rate The rate, measured in bytes/s, at which data is moved from source to
destination after software initialization and set up operations. The
maximum rate at which the hardware can operate.
trigger Any event that causes or starts some form of data capture.