Touch Sensor Priority Regions for Accurate Multi-Touch Processing
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Solution Overview
Problem
Existing touch sensor devices lack the ability to differentiate and prioritize sensing regions, leading to inefficiencies in processing touch inputs and potential interference between different touch points.
Innovation Solution
The implementation of differentiated priority sensing regions within touch sensor devices, where specific areas are assigned higher priority for touch detection, allowing for enhanced processing and reduced interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If uniform sensing priority is applied across the entire touch sensor surface, then the device maintains simple processing logic, but touch input accuracy and responsiveness deteriorate in critical interaction areas
Solution Approach 1:
The patent implements different sensing priorities in different regions of the touch sensor surface. High-priority sensing regions (e.g., central area) use more sensitive detection thresholds and processing resources, while low-priority regions (e.g., peripheral areas) use reduced sensing intensity. This local differentiation improves touch input accuracy in critical areas without uniformly increasing system complexity across the entire device.
2Productivity
If all touch points are processed with equal priority, then the processing logic remains simple, but interference between different touch points increases and reduces overall processing efficiency
Solution Approach 1:
The patent divides the touch sensor surface into multiple priority zones (high-priority and low-priority regions). Each zone is processed independently with appropriate resource allocation. High-priority regions receive dedicated processing channels and higher computational resources, while low-priority regions use standard processing. This segmentation reduces interference between touch points by isolating their processing paths, thereby improving overall processing efficiency.
3Measurement precision
If high sensing sensitivity is applied across the entire touch surface, then touch detection accuracy improves, but false positive detections and noise interference increase
Solution Approach 1:
The patent applies different sensing thresholds and detection sensitivities to different regions of the touch surface. High-priority regions (where accurate touch detection is critical) use high sensitivity thresholds, while low-priority regions use lower sensitivity to filter out noise. This local quality differentiation maintains high touch detection accuracy in important areas while reducing false positive detections in less critical areas, thereby minimizing harmful noise interference across the entire system.
Data Source
AI summary
A touch sensor device (TSD) includes a panel and drive-sense circuits (DSCs). The panel includes electrodes, and the DSCs are operably coupled to the electrodes. A DSC is operably coupled via a single line to an electrode and is configured to provide a signal via the single line to the electrode and simultaneously to sense the signal via the single line. The sensing of the signal includes detection of an electrical characteristic of the electrode and/or a change of the signal. The DSC is also configured to generate a digital signal representative of the electrical characteristic of the electrode and/or the change of the signal. The TSD also includes one or more processing modules operably coupled to the DSCs and configured to execute operational instructions to process first digital signals generated by a first subset of the DSCs that includes fewer than all of the DSCs in a prioritized manner.