Pressure-Sensitive Touch Panel Character Input Method
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Solution Overview
Problem
Conventional character input methods on mobile terminals are time-consuming, complex, and less efficient, particularly when switching between uppercase and lowercase letters, as they require additional operations such as using the Shift key or pressing and holding the keyboard.
Innovation Solution
A character inputting method that detects a pressing operation on a touch panel and acquires a pressure detection value to determine whether to input uppercase or lowercase characters, allowing users to switch between character types by changing the pressure without additional operations, using a pressure-sensitive touch panel and a barometer to measure pressure differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the Shift key is used to switch case when inputting uppercase letters, then the letter case can be changed, but the operation becomes time-consuming and complex due to additional operations required
Solution Approach 1:
The patent changes the operating parameter from binary click/hold states to multi-level pressure detection. By detecting different pressure values (first threshold for uppercase, second threshold for lowercase), the system eliminates the need for additional Shift key operations while maintaining clear case differentiation. This parameter change directly resolves the contradiction by making case switching as simple as varying finger pressure.
Solution Approach 2:
The touch panel itself performs the case switching function through pressure detection, eliminating the need for separate Shift key operations. The system uses the inherent pressure information from the user's finger to automatically determine case requirement, making the touch panel serve multiple functions (input selection and case control) without additional components or steps.
2Productivity
If the keyboard is pressed and held to input uppercase letters, then the letter case can be changed, but the operation becomes time-consuming compared to rapid clicking for lowercase letters
Solution Approach 1:
The patent transforms the temporal dimension of input (holding duration) into a pressure dimension. Instead of requiring users to hold the key for a specific time to indicate uppercase, the system detects pressure magnitude. This allows both uppercase and lowercase letters to be input through rapid single taps with different pressure levels, dramatically improving input efficiency and eliminating the time penalty for case switching.
Solution Approach 2:
The system dynamically responds to varying pressure levels during the same rapid clicking action. By making the case determination dependent on instantaneous pressure rather than temporal characteristics (holding duration), the system enables flexible, dynamic case selection that maintains the speed of rapid clicking while adding case differentiation capability.
3Adaptability or versatility
If conventional input methods are used for character input, then basic character input can be achieved, but the operation becomes complex and less efficient when switching between different character types
Solution Approach 1:
The patent makes the touch panel universally handle both character selection and case determination functions. A single pressure detection mechanism replaces multiple separate controls (Shift key, hold duration), allowing the same input interface to adapt to different character type requirements without adding operational complexity. This multi-functionality resolves the contradiction by simplifying the interface while maintaining versatility.
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 rapid and efficient character input by allowing users to switch between character types based on pressure, reducing the complexity and time required for inputting characters, and improving user experience by eliminating the need for additional operations.
Implementation Method 1
acquiring a pressure detection value for the pressing operation and a target key on which the pressing operation is performed
Data Source
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AI summary
A character inputting method and a mobile terminal are provided. The method includes: detecting a pressing operation made by a user on a touch panel of the mobile terminal at a display region of the keyboard when a keyboard for inputting characters is displayed on a display panel of a mobile terminal; acquiring a pressure detection value for the pressing operation and a target key on which the pressing operation is performed when the pressing operation has been detected; selecting one character from first-type characters corresponding to the target key and inputting the selected character into a predetermined word editable region when the pressure detection value is greater than a predetermined threshold; and selecting one character from second-type characters corresponding to the target key and inputting the selected character into the predetermined word editable region when the pressure detection value is smaller than or equal to the predetermined threshold.