Ik heb even het volgende voor je opgezocht:
CarrollTouch Infrared Technology
CarrollTouch Benefits
· Withstands severe environments
· Adjusts to changing light conditions,
including direct sunlight
· Stable, no-drift calibration performance
· Vandal- and abrasion-resistant screens,
ideal for rugged applications
· Parallax-free performance for LCD displays
· Sealable against contaminants
· Choice of controller interface
· Choice of clear or antiglare screens
· Choice of filter type or overlay for system
protection and optimal optics
· Available privacy filter for applications involving
sensitive information, such as ATM transactions
CarrollTouch Applications
· Indoor/outdoor kiosks
· ATMs
· Ticketing machines
· Medical instrumentation
· Process control systems
· Hospital operating rooms
· Commercial transportation
· Commercial food preparation and service
· Large plasma displays
How a CarrollTouch Touchscreen Works
Infrared (IR) technology relies on the interruption of an IR light grid in front of the display screen. The touch frame or opto-matrix frame contains a row of IR-light emitting diode (LEDs) and photo transistors, each mounted on two opposite sides to create a grid of invisible infrared light. The frame assembly is comprised of printed wiring boards on which the opto-electronics are mounted and is concealed behind an IR-transparent bezel. The bezel shields the opto-electronics from the operating environment while allowing the IR beams to pass through.
The IR controller sequentially pulses the LEDs to create a grid of IR light beams. When a stylus, such as a finger, enters the grid, it obstructs the beams. One or more photo transistors detects the absence of light and transmits a signal that identifies the x and y coordinates.
Uit dit verhaal maak ik op dat de touchscreen niet zal reageren op signalen van buitenaf. Dus wat jij wil gaat niet werken!
bron:
Digit