Clamshell Touch Calibration via Cover Separation Counting
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Solution Overview
Problem
Current handheld devices face accuracy issues with touch screens, leading to inconvenience in precise object selection due to inadequate touch calibration methods.
Innovation Solution
A clamshell electronic device with a touch module, sensing device, and calculation unit that detects the separation of upper and lower covers, producing a detecting signal to count separation events and calibrate the touch module when a predetermined condition is met, utilizing a basic input/output system and ACPI driver to enhance touch accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If touch calibration is performed manually or through traditional methods, then the touch module can be calibrated, but the accuracy and precision of touch events remain insufficient leading to user inconvenience
Solution Approach 1:
The system automatically performs touch calibration without requiring user intervention. The sensing device detects cover separation events and triggers calibration procedures autonomously, allowing the device to self-correct touch accuracy issues without burdening the user with manual calibration tasks
Solution Approach 2:
The system performs touch calibration in advance based on predicted usage patterns. By detecting multiple cover separation events and proactively initiating calibration before user complaints arise, the system ensures touch accuracy is maintained without requiring reactive user intervention
2Measurement precision
If touch calibration is performed frequently to maintain accuracy, then touch precision improves, but device complexity and calibration overhead increase
Solution Approach 1:
The system uses cover separation count as a trigger parameter to determine when calibration is needed. By monitoring this simple parameter and comparing it against a threshold, the system avoids complex continuous monitoring while still achieving accurate calibration timing, thus maintaining touch precision without excessive complexity
3Measurement precision
If automatic calibration is implemented based on cover separation detection, then touch module accuracy improves, but the system requires additional sensing devices and control logic
Solution Approach 1:
The sensing device that detects cover separation is a multi-functional component. It serves both as a mechanical state detector (open/closed) and as a trigger for touch calibration, eliminating the need for separate calibration detection mechanisms and reducing overall system complexity while improving touch module accuracy
Data Source
AI summary
The present disclosure provides a clamshell electronic device. The clamshell electronic device includes a touch module, a sensing device and a calculation unit. The touch module is arranged to detect touch events. The sensing device is arranged to detect whether an upper cover and a lower cover of the clamshell electronic device are separated, and produce a detecting signal when the upper cover and the lower cover are separated. The calculation unit is arranged to count the number of times the upper cover and the lower cover are separated according to the detecting signal to obtain a separated number, and calibrate the touch module when a predetermined condition is satisfied, wherein the predetermined condition comprises that the separated number is greater than a predetermined number.