Carrol Touch TouchSystems CarrollTouch Prog, Руководство программиста

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CARROLL TOUCH Glossary
Touch System Programmer’s Guide GL-1
Glossary
Add Exit Point Modifier A modifier that can be added to any of the four touch reporting
types (Continuous Mode, Enter Point Mode, Exit Point Mode,
Tracking Mode) under the SFP and that reports the coordinates at
which the stylus exits the screen.
axis (x-axis, y-axis, z-axis) A dimension that makes up the touch coordinate system. The
x-axis is the horizontal axis and the y-axis is the vertical axis. The
z-axis, available on guided wave systems only, measures the
pressure placed on the screen.
baud rate The speed of data transfer between a peripheral and the computer.
This is a communication parameter used by the serial (RS-232)
controller.
beam An infrared light beam emitted by an infrared light-emitting diode
(LED) and received by a phototransistor, which are set opposite
each other in the touch frame. Also called a physical beam or
opto-pair.
bezel The plastic protective housing of the touch frame or touch screen,
which either replaces or is fastened over the existing bezel of the
monitor.
broken beam A beam in which the infrared light level received by the infrared
sensitive phototransistor falls below a threshold value set by the
touch system firmware. In normal operation, this is due to a stylus
obstructing the beam path from the LED to the phototransistor.
Broken beams may also result from a defective LED,
phototransistor, or other touch system hardware, and from other
obstructions of the beam path. See beam.
comm port The serial (RS-232) port on the back of the computer to which a
touch frame or touch screen is connected.
communication
parameters The variables that control the transfer of information between the
controller and the computer. For serial (RS-232) controllers, the
variables are comm port, parity, baud rate, data bits, and stop bits.
For hardware- and software-based controllers, the variables are
I/O address and interrupt number.
Continuous Mode A touch reporting type under the SFP that reports touch
coordinates at intervals from the time a stylus enters the screen
until it exits, even if the stylus is unmoving. Add Exit Point can
be added as a modifier.