Dynamic Touch Receiving Region Adjustment for Input Accuracy
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Solution Overview
Problem
Conventional electronic devices with contact detection units fail to prevent unintended operations when the contact position shifts due to pressure application, leading to incorrect input or pressing of nearby objects.
Innovation Solution
An electronic device equipped with a display unit, a contact detection unit, a pressure detection unit, and a control unit that dynamically adjusts the receiving region based on changes in contact position and pressure data, ensuring intended operations are maintained even as the contact position shifts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the contact detection unit determines object pressing based on initial contact position, then the response is immediate, but unintended operations occur when contact position shifts due to pressure application
Solution Approach 1:
The receiving region is made dynamic rather than fixed. The control unit adjusts the receiving region based on the relationship between contact position and pressure magnitude, allowing the region to expand or shift in response to applied pressure. This resolves the contradiction by enabling the system to maintain reliability (prevent unintended operations) while responding dynamically to pressure changes, rather than relying solely on initial contact position.
Solution Approach 2:
The system uses feedback from the pressure detection unit to continuously monitor pressure magnitude and adjust the receiving region accordingly. When pressure is applied and contact position shifts, the feedback mechanism allows the control unit to compensate for the shift by adjusting the receiving region boundaries, ensuring that the intended object remains within the active region and preventing unintended operations on nearby objects.
2Device complexity
If the receiving region is fixed, then the device structure is simple, but contact position shifts cause pressing of nearby objects
Solution Approach 1:
The receiving region transitions from a static, fixed boundary to a dynamic boundary that can be adjusted by the control unit. This dynamic adjustment is triggered by pressure detection and contact position monitoring, allowing the system to maintain simplicity in basic structure while adding intelligence to the region definition to prevent unintended operations.
3Loss of time
If the contact detection unit detects contact at initial contact instant, then fast response is achieved, but contact position shifts under pressure cause input errors
Solution Approach 1:
The system performs preliminary detection of contact position and pressure magnitude relationship. By establishing this relationship early and using it to dynamically adjust the receiving region, the system prepares for potential contact position shifts before they cause input errors. This preliminary action maintains fast response while preventing measurement precision issues.
Data Source
AI summary
An electronic device (1) prevents unintended operations when a contact position shifts, by having a display unit (20) that displays an object, a contact detection unit (10) that detects contact by a contacting body, a pressure detection unit (30) that detects pressure on the detection unit (10), and a control unit (60) that performs processing associated with the object displayed on the display unit (20) in accordance with a contact position of the contacting body in a region of the detection unit (10) corresponding to an receiving region of the object and with data based on pressure on the detection unit (10) acquired from the pressure detection unit (30), such that when the contact position of the contacting body changes as the data based on pressure increases, the control unit (60) changes the receiving region of the object in a direction of change of the contact position.