Software for Touch Screens
- Improves robustness of citizen information kiosks
- Reduces time to implement touchscreen systems
Modifying touchpad technology
OCC was asked to modify existing touchpad technology to allow glass of a thickness of up to 5 cm to be placed in front of the touchscreen. This enabled the creation of weatherproof, vandalproof systems. The input device can now be placed inside a shop and entries made from outside. This feature has been widely used in the computer systems of tourist information kiosks.
Technology calculates position of pointer
The touchpad has a voltage source applied to each corner. This creates a uniform voltage field - monitored by a microprocessor - across the surface of the pad. Touching the screen disturbs the uniform field and induces a current to flow. By analysing these induced current flows, the position of the finger (or pointer) on the pad can be calculated.
