Touch Sensor Controller Auto-Configuration via Signal Analysis
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Solution Overview
Problem
Existing touch panel systems require manual configuration of controllers for specific touch panels, which is inconvenient and often requires specialized software or mechanical switches that lack reliability.
Innovation Solution
A method and controller configuration that automatically detect characteristics of a touch panel, such as size and sensitivity, by driving and measuring signal outputs from the panel's electrodes, allowing for adaptive operation settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual configuration methods (software or mechanical switches) are used to set up the controller for a specific touch panel, then the controller can be configured for the correct panel characteristics, but the process is inconvenient and reduces ease of operation
Solution Approach 1:
The controller automatically detects touch panel characteristics by driving test signals through transmit electrodes and measuring signal outputs from receive electrodes. The controller self-configures by analyzing the measured signals to determine panel characteristics such as size and electrode configuration, eliminating the need for manual software configuration or mechanical switches. This self-service approach directly resolves the contradiction by making the configuration process convenient and time-efficient.
2Adaptability or versatility
If mechanical switches are used for configuration, then users can set the controller for different touch panels, but reliability is reduced due to vibration tolerance issues
Solution Approach 1:
The patent replaces mechanical switches with an electrical signal-based configuration system. The controller uses electrical test signals to automatically detect and configure for different touch panel types. This substitution of mechanical components with electrical systems eliminates vibration tolerance issues while maintaining the ability to adapt to different panel configurations.
Solution Approach 2:
The controller performs automatic detection and configuration without requiring physical switch manipulation. By self-configuring through electrical signal analysis, the system maintains adaptability across different touch panel types while achieving superior reliability in vibration-prone environments.
3Adaptability or versatility
If the controller is designed to work with multiple different touch panels, then versatility is improved, but the controller complexity increases
Solution Approach 1:
The controller handles multiple touch panel types by dynamically changing operational parameters based on detected characteristics. The controller measures signal outputs, analyzes them to determine panel characteristics (size, electrode arrangement), and adjusts its operation settings accordingly. This parameter adaptation approach enables multi-panel compatibility without requiring complex hardware redesign.
Solution Approach 2:
The controller transitions from a static, panel-specific design to a dynamic, adaptive system. It automatically adjusts its configuration based on real-time detection of touch panel characteristics through signal driving and measurement. This dynamic adaptation enables a single controller to work with multiple panel types while managing complexity through software-based configuration rather than hardware complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables seamless operation with multiple different touch panels without manual configuration, improving convenience and reliability by automatically adjusting settings based on detected panel characteristics.
Implementation Method 1
The received signal outputs (responses) from the touch panel will be a function of capacitance between electrode rows and columns, as the transmit electrodes are capacitively coupled to the receive electrodes
Implementation Method 2
Touches by a finger (or other conductive object) affect the capacitance between adjacent row and column electrodes and their capacitance to ground by diverting coupling electric fields towards the effectively grounded finger
Data Source
AI summary
A method for configuring a touch sensor system is provided. The method may be performed automatically by a controller of the system. The system comprises a touch panel operatively coupled to the controller, where the touch panel comprises a plurality of transmit electrodes and a plurality of receive electrodes. The method comprises selectively and individually driving, by the controller, at least one of the transmit electrodes. For each driven transmit electrode, signal outputs from one or more of the receive electrodes are received while the transmit electrode is driven. One or more characteristics of the touch panel is determined as a function of the signal outputs from the receive electrodes. At least one operation setting of the controller is configured based on the one or more characteristics. The one or more characteristics of the touch panel may include a number of transmit electrodes and a number of receive electrodes.