2-20
E l o E n t u i t i v e T o u c h m o n i t o r
The AccuTouch Controllers
The AccuTouch controllers provide the drive signals for the touchscreen,
convert the received analog signals into digital touch coordinates, and send
these coordinates to the computer.
Controllers are available for the AccuTouch touchscreen with serial RS-232 or
PC-Bus (ISA or EISA compatible). Controller options are detailed in Chapter 3.
For large-volume users, it may be cost-effective to integrate the Elo COACH™
and COACH IIs (Controller On A CHip) directly into your board-level design.
Contact Elo for details.
Resolution and performance of the AccuTouch system are defined by the
controller. Unscaled coordinate ranges are about 400-3800 for X and 600-3500
for Y, with over 200 coordinates per second possible. See the SmartSet™
Touchscreen Controller Family Technical Reference Manual available at
www.elotouch.com/support/dwnldmnls.asp
and
www.elotouch.com/products/
accutec/c3000u.asp
.
Driver Software
Elo driver software provides a consistent software interface among all Elo
touchscreens and controllers.
The driver software scales the absolute coordinates received from the
touchscreen controller into translated screen coordinates, using the calibration
points obtained with the calibration program included with the driver software.
The driver also performs other operations as directed by the application.
Elo provides driver programs for a variety of operating systems. Go to
www.elotouch.com/Support/dnld.asp
for a complete list of available drivers.
If you cannot use an available driver, Elo can supply all the touchscreen related
information you will need to write your own driver for any type of system,
including UNIX workstations, real-time systems, and embedded systems. The
SmartSet Touchscreen Controller Family Technical Reference Manual
available at
www.elotouch.com/support/dwnldmnls.asp
,
gives step-by step
instructions on this process. Machine-independent source code is included on a
companion disk along with a setup utility.
Summary of Contents for AccuTouch 821615-000
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