120 • Glossary of Terms X64 Xcelera-CL PX4 User's Manual
Grab
Acquiring an image frame by means of a frame grabber.
Host
Refers to the computer system that supports the installed frame grabber.
Host buffer
Refers to a frame buffer allocated in the physical memory of the host computer system.
LSB
Least Significant Bit in a binary data word.
MSB
Most Significant Bit in a binary data word.
PCI 32
Peripheral Component Interconnect. The PCI local bus is a 32-bit high-performance expansion bus
intended for interconnecting add-in boards, controllers, and processor/memory systems.
PCI 64
A superset of the PCI specification providing a 64 bit data path and a 66 MHz clock.
Pixel
Picture Element. The number of pixels describes the number of digital samples taken of the analog video
signal. The number of pixels per video line by the number of active video lines describes the acquisition
image resolution. The binary size of each pixel (i.e., 8-bits, 15-bits, 24-bits) defines the number of gray
levels or colors possible for each pixel.
RAW
A Sapera data file format where there is no header information and that supports any Sapera buffer type.
Refer to the Sapera Basic Modules Reference Manual “Buffer File Formats” section.
RISC
(Reduced Instruction Set Computer) A computer architecture that reduces chip complexity by using
simpler instructions.
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