iTouch Surface Wave Technology
iTouch technology data sheet (113K PDF)
Using surface wave technology as its
foundation, Elo has created a breakthrough in
touch technology—iTouch. In Elo's new iTouch
touch-on-tube technology, surface waves (also
known as surface acoustic waves) are directed
onto the cathode ray tube (CRT) surface itself
for unhindered touch sensing—eliminating any
glass overlay on the CRT and delivering the
highest quality image possible.
iTouch also provides unmatched durability—a
critical feature for the public access
environment—because the CRT faceplate is several
times stronger than a touchscreen overlay, even
a bonded one. Elo's new iTouch technology leaves
the original brightness and clarity intact while
providing the same, no-drift, stable performance
and proven reliability of surface wave
technology.
iTouch Benefits
- Touch directly on tube—no touchscreen
overlay
- Preserves 100 percent of CRT brightness,
clarity, antireflection and color properties
- More durable and safer than even bonded
touchscreen overlays
- Same fast, accurate and stable
performance as surface wave
Self-Service Applications
- Point-of-information (POI) kiosks
- Point-of-purchase (POP) promotion
- Electronic catalogs
- In-store e-commerce
- Gaming, lottery and amusement
- Multimedia marketing
- Banking/financial transactions
- Ticket sales
- Industrial control rooms
- Computer-based training
- Education
How an iTouch "Touch-on-Tube"
Touchscreen Works
iTouch is a surface-wave touch
technology. The iTouch controller uses
ultrasonic waves on the CRT faceplate to
develop a digital map of the surface.
Each X- or Y-axis has a transmitting and
receiving piezoelectric transducer and a
set of reflector stripes on the outside
edge of the CRT. The touchscreen
controller sends a five-megahertz burst
to the transmitting transducers that
convert the electrical signal into
surface acoustic waves — mechanical
waves that propagate in the surface of
materials such as glass. A special
pattern of reflector stripes diverts the
burst to create a uniform density of
acoustic wave energy across the surface
of the CRT.
A light touch with a finger, gloved
hand, or soft stylus absorbs a portion
of the wave. The resulting change in the
received signal is analyzed by the
controller and digitized into X and Y
coordinates. In addition to sensing the
location of a touch, surface wave (also
known as surface acoustic wave, or SAW)
is the only touch technology that can
also sense the pressure of a touch — the
Z-axis — by measuring how much signal
was absorbed.
Reasons to Choose iTouch
"Touch-on-Tube" Technology
iTouch "touch-on-tube"
surface wave technology heralds
a breakthrough in interactive
displays that provide unmatched
clarity, reliability and
durability — even in exposed
public access environments.
Key Features
- CRT faceplate acts as
touch sensor — no
touchscreen overlay
- Preserves 100 percent of
original CRT brightness and
image quality for clearer,
brighter images and purer
colors
- 100 percent viewing area
of monitor available
- Superior touchscreen
response
Smart — no false activation
Fast — efficient algorithms
and electronics
Sensitive — recognizes touch
location and pressure
- Finger, gloved hand, or
soft stylus activation
- Stable, "drift-free"
operation for a touch
response that's always
accurate
- More durable, stronger
and safer than even bonded
overlays
- Scratch- and
contaminant-resistant
- Offered as a completely
sealed Elo touchmonitor in
desktop, kiosk, gaming, and
amusement machines
- Entuitive touchmonitors
with iTouch technology meet
UL, cUL, FCC and CE
standards
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