Touch Determining Device Matrix Capacitance Filtering

The patent segments the touch determination process into multiple stages: initial capacitance detection, threshold comparison, and secondary verification. By dividing the detection process into discrete steps with intermediate validation, the system can identify and filter out false signals caused by electrode short circuits while maintaining sensitivity to genuine touch events.

The patent implements a feedback mechanism where the system continuously monitors capacitance values and compares them against predetermined thresholds. When a capacitance change is detected, the system performs additional verification checks before confirming a touch event, using feedback from multiple detection cycles to distinguish between actual touches and false signals from unstable electrode connections.

The patent applies different evaluation criteria to different touch areas based on their local characteristics. Each touch area's capacitance variation is evaluated independently against local thresholds and patterns, allowing the system to accommodate variations in touch pressure and area while maintaining strict validation to prevent false events from noise or electrode instability.

The patent performs preliminary validation of capacitance changes before confirming touch events. By establishing predetermined thresholds and verification criteria in advance, the system prepares a framework for distinguishing genuine touches from false signals, enabling reliable multi-touch detection without being triggered by noise-induced capacitance variations.