Rockwell Automation 5370 Color CVIM Communications Manual - Manual (Page 218)

Bulletin 5370 Color CVIM
Glossary
Configurable Vision Input Module
G–3
P
parity bit
A parity bit is added to a binary array
to make the sum of all the bits
always odd or always even; a
fundamental check.
pixel
An element of a picture. In order for
a computer to analyze a picture, the
picture is broken up into a series of
picture elements called pixels. Each
pixel is assigned a brightness level
which is the average of the area in
the pixel. In computer vision
systems, the pixels is the smallest
area of resolution in a picture.
PLC
Allen–Bradley trademark for
programmable logic controller.
Q
Q–bus
A set of electrical conductors that
carry specific signals to several other
circuits.
R
RS–232
Standard electrical interface.
S
standard deviation
A measure of the dispersion around a
mean value.
serial port
A communications connector
through which data is transmitted
one bit at a time.
space character
A graphic character that is usually
represented by a blank site in a series
of graphics. The space character,
though not a control character, has a
function equivalent that of a formal
effect or that causes the printer or
display to move one position forward
without producing the printing or
display of any graphics.
string
A sequence of ASCII characters.
subroutine
A series of computer instructions
which perform a specific task for
other routines. It is distinguishable
from from a main routine in that it
requires as one of its parameters a
location specifying where to return to
the main program after its function
has been accomplished.
SYS host
The device that controls the Color
CVIM’s display and the lightpen’s
permission to enter configuration
changes. The SYS host may also
trigger the Color CVIM
T
TTL
A signal processing system in which
data in the form of low level
electrical signals is processed
through circuits either discretely or
through integrated circuits comprised
primarily of transistors.
W
word
A unit of data which contains two
bytes (16 bits).