User`s guide

Glossary CARROLL TOUCH
GL-6 Touch System Diagnostics (CTDIAG) User’s Guide
touch mode A touch mode that determines when touch coordinates are
reported. Enter Point Mode reports only the coordinates at which
a finger or stylus enters the touch screen. Exit Point Mode reports
only the coordinates at which the stylus exits the touch screen.
Tracking Mode reports the coordinates of the entry of the touch
screen and all movement within the screen. Continuous Mode
generates reports at intervals from the time the screen is entered
until it is exited, even though the finger or stylus is unmoving.
Exit Point reporting can be added as a modifier to the four basic
reporting types.
Touch Reporting Mode A method that determines the form used to send data from the
touch system to the host. In scan reporting, the touch system
reports a list of physical beams that are interrupted in each axis.
In coordinate reporting, the touch system reports x, y coordinate
values that identify the touch location.
touch screen A glass overlay containing a transducer and reflectors, placed
over the display surface. The transducer is mounted on the edge
of the glass and emits an acoustic wave, which travels through the
glass overlay as well as over the surface and is reflected back
across the overlay. Since the speed of the wave is known and the
size of the glass overlay is fixed, the first reflector will send the
first signal back first, then the second, and so on.
touch system The collection of all the components that are necessary to detect a
touch and report it to the host. This collection usually consists of
the touch frame or screen, protective bezel, controller, and
software.
trace buffer A portion of memory used by CTDIAG to record all
communication between the touch system and controller. The
communication trace buffer can be viewed through Debug.
Tracking Mode A touch reporting type under the SFP that reports the coordinates
of the initial touch on the touch screen, as well as all movement
within the screen. Add Exit Point can be added as a modifier.
Unformatted Mode A mode used in the receive window of the Debug screen. Under
the SFP, commands and corresponding reports fill a line, then
wrap around to the next line.
virtual beam Imaginary beams that occupy the spaces between physical beams.