Side Face Gesture Detection Using Dual Capacitive Touch Screens
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Solution Overview
Problem
Current mobile terminals have low touch sensitivity and operational limitations on their side faces, making it difficult to accurately identify user interactions, which results in undiversified operations and poor user experience.
Innovation Solution
The method involves detecting capacitance signals on both front and back capacitive touch screens of a mobile terminal to determine contact regions and dynamic changes, allowing for accurate identification of gestures such as sliding, tapping, and other operations on the side face, replacing the need for physical keys and enhancing user interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical keys are used on the side face, then operation identification is reliable, but device complexity increases and aesthetics deteriorate
Solution Approach 1:
The patent merges the side face operation detection function with the existing front and back capacitive touch screens. By using the capacitive sensing capability of these screens to detect hand contact on the side face, the invention eliminates the need for separate physical keys while maintaining operation identification reliability. The front and back screens are integrated to work together for side face gesture detection.
Solution Approach 2:
The front and back capacitive touch screens serve multiple functions: their primary display and touch input function, plus an additional function of detecting hand contact and gestures on the side face. This multi-functionality allows the same components to provide both display capabilities and side face operation detection, reducing overall device complexity.
2Reliability
If physical keys are used on the side face, then operation reliability is ensured, but ease of operation decreases due to limited operation types
Solution Approach 1:
The patent introduces dynamic gesture recognition on the side face, allowing operations to vary based on the movement and position of the hand. Instead of static physical key presses, the system detects dynamic changes in capacitance signals as the hand moves, enabling diverse operations such as sliding gestures in different directions, tapping, and holding gestures, thereby improving operation diversity while maintaining reliability through accurate capacitance-based detection.
Solution Approach 2:
The system detects changes in capacitance signal parameters (signal strength, position, duration) to differentiate between various gestures. By monitoring parameter changes over time, the system can distinguish between different operation types such as light tapping versus firm pressing, or sliding in different directions, enabling diverse operations without physical keys while maintaining reliable identification.
3Measurement precision
If dual capacitive touch screens are used for side face detection, then sensitivity of gesture identification is improved, but use of energy increases
Solution Approach 1:
The system uses partial action by only activating the side face detection function when needed. The capacitive touch screens continuously monitor for hand contact, and only when contact is detected does the system engage in detailed gesture analysis. This approach maintains high sensitivity for gesture detection while minimizing energy consumption by keeping the detection in a low-power standby mode most of the time.
Solution Approach 2:
The front and back capacitive touch screens utilize their own inherent capacitive sensing capability to detect side face gestures, rather than requiring additional dedicated sensors. This self-service approach allows the existing components to perform multiple functions, improving gesture detection sensitivity without the energy cost of adding separate detection hardware.
4Adaptability or versatility
If side face operation detection is added, then adaptability of the device is improved, but device complexity increases
Solution Approach 1:
The patent combines the side face operation detection functionality with the existing front and back capacitive touch screens. By merging these functions into the same hardware components, the system achieves enhanced adaptability without proportionally increasing device complexity. The same capacitive sensing infrastructure serves both display touch input and side face gesture detection.
Solution Approach 2:
The front and back capacitive touch screens are designed to perform multiple functions: their traditional display and touch input role, plus the additional role of detecting hand contact and gestures on the side face. This multi-functionality increases device adaptability while avoiding the complexity increase that would result from adding dedicated side face detection hardware.
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
This approach improves the sensitivity and diversity of side face interactions, providing better user experience and flexibility compared to physical keys, while also simplifying the device's design and aesthetics by eliminating side keys.
Implementation Method 1
detecting capacitance signals on a first capacitive touch display screen and a second capacitive touch display screen
Data Source
AI summary
An operation detection method and apparatus, and a mobile terminal, where the method includes determining a contact region of a hand of a user on a side face of a mobile terminal and a dynamic change of the hand of the user using electrical characteristics of two capacitive touch display screens of the mobile terminal based on detected capacitance signals on the two capacitive touch display screens, determining a gesture operation of the hand on the side face, improving sensitivity of identifying a gesture on the side face, and accurately identifying the gesture operation of the hand of the user on the side face.