Touch Panel Operation Validation with Acceleration Sensor
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Solution Overview
Problem
Existing electronic apparatuses face challenges in accurately determining operations performed on a touch panel, especially when the device is in water, leading to potential erroneous executions of operations due to movement detection thresholds.
Innovation Solution
The electronic apparatus employs a touch panel to detect operations and a processor to determine if a movement amount in a specific direction meets a threshold value, invalidating operations if a different direction's movement exceeds a second threshold before the initial operation is confirmed, thereby preventing erroneous executions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device uses a touch panel to detect operations and determines operations based on movement amount thresholds, then the device can respond to user inputs, but when the device is in water, false operations are detected due to water-induced movement exceeding thresholds
Solution Approach 1:
The patent introduces an acceleration sensor as an intermediary device to detect water-induced movements separately from touch panel operations. The acceleration sensor acts as a mediator that monitors environmental conditions (water presence) and provides additional context to distinguish between intentional user operations and false detections caused by water, thereby resolving the reliability issue without compromising touch panel responsiveness
Solution Approach 2:
The system performs preliminary detection using the acceleration sensor to identify water presence before validating touch panel operations. By checking for water-induced acceleration patterns in advance, the system can preemptively invalidate potential false operations, preventing erroneous executions before they occur while maintaining normal operation detection accuracy
2Reliability
If the device invalidates operations when movement in a different direction exceeds a threshold, then erroneous executions are prevented, but legitimate operations may be blocked
Solution Approach 1:
The patent implements dynamic threshold adjustment based on detected operation patterns and acceleration data. Instead of using fixed thresholds that may block legitimate operations or allow false detections, the system adaptively adjusts validation criteria in real-time based on the context of detected movements and acceleration patterns, optimizing the balance between preventing errors and allowing legitimate operations
Solution Approach 2:
The system uses feedback from acceleration sensors and touch panel data to continuously refine operation validation. By analyzing the relationship between detected movements, acceleration patterns, and operation outcomes, the system learns from past operations and adjusts its validation logic to better distinguish between erroneous and legitimate operations, improving reliability without increasing false rejections
Data Source
AI summary
An electronic apparatus includes a touch panel and a processor. The touch panel detects an operation performed on a surface of the electronic apparatus. The processor determines whether or not a first operation, in which a first movement amount of an operation point on the surface of the electronic apparatus in a first direction is equal to or larger than a first threshold value, has been performed based on an output signal from the touch panel. The processor executes a processing in accordance with the first operation when determining that the first operation has been performed. The processor invalidates the first operation when a second movement amount of the operation point in a second direction, which is different from the first direction, becomes equal to or larger than a second threshold value before determining that the first operation has been performed.