AlSentis® HSS™ Touch Recognition Technology uses touch signatures, instead of pre-determined capacitive set-points, to sense exactly when a touch happens.  This approach to sensing touch overcomes variance like no other electric field touch technology, enabling solutions for:

Water Immune Touch Systems – Full functionality in water spray without false-triggering

Glove Touch Systems – No special gloves required

Noise Tolerant Touch Systems – Passes 10V injected line noise

Temperature– Touch feel is not affected by temperature changes

Low Power Touch Systems – ultra-low power capable without compromising performance

New Touch features – enables new construction methods and user-interface experiences

The Problem of Variance

In a typical capacitive touch system, fingers create changes in an e-field that can be measured, and when the change is enough, a threshold is triggered and a touch is recorded.  Because these e-fields are incredibly sensitve, variance can cripple a touch system.  The problem is really two fold:

1. There are variances other than fingers that can trigger touch thresholds.
2. Variance can actually make the thresholds appear to MOVE.

There are lots of things that cause variance in a touch system:

The Design - complex textures, contours, surface finishes

Materials Used  - Inconsistencies in density, conductivity, thickness, pliability or opacity..

Manufacturing Process - Imperfections in assembly, grinding, bonding, electronics, decorating or packaging.

How it's Used - Wearing gloves, using thick screen proectors or overlays, or having sweaty hands

Where it's Used - Temperature fluxations, radio interferenece, Splashes from water, saline or other fluids, mud, or dirt

Trying to indicate a precise touch using a threshold in a constantly varying e-field is like trying to hit a moving target through a scope that is constantly changing its magnification.  False-touches, not working, and inconsistent feel are just some of the hallmarks of variance, but AlSentis® HSS™ Touch Recognition Technology fundamentally ignores capactive variance.

Diagnostic Mode

HSS™ Diagnostic Mode serves as an early-warning system for manufacturing inconsistencies that could impair the quality of a touch system. In HSS™ Diagnostic Mode, the chipset will give a Design Variance Index for a variety of touch system configurations which can be used in end-of-line quality testing to verify that the touch integrated product was manufactured within acceptable tolerances.

Alsentis Technologies