Dynamic Decision Area Adjustment for Touch Panel Selection Errors
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Solution Overview
Problem
Touch panels face challenges in operability due to the area contact nature of finger interactions, leading to difficulties in accurately selecting items, even with enlarged screens and arrow-shaped pointers, as users often inadvertently select incorrect items, and existing methods require skill and correct processing to minimize errors.
Innovation Solution
An electronic device with a touch panel that includes a storage unit for decision area information, a display control unit, and a control unit to determine the selected item by referencing the storage unit, featuring a determination unit to assess intended selections and an update unit to narrow the decision area based on user inputs, such as cancel or retry keys, to reduce erroneous selections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display screen is enlarged to increase item size relative to touched area, then operability is improved, but device portability and screen real estate are compromised
Solution Approach 1:
The patent applies dynamics by making the decision area dynamically adjustable based on touch position. The system calculates and modifies the decision area size and shape according to where the user touches, allowing the effective selection area to expand beyond the fixed display item boundaries without permanently enlarging the screen. This resolves the contradiction by providing enlarged selection areas only when and where needed.
2Ease of operation
If arrow-shaped pointers are generated to improve selection accuracy, then operability is improved, but device complexity increases
Solution Approach 1:
The patent applies self-service by using the touch panel's existing coordinate detection capability to automatically determine decision areas. The system serves itself by utilizing the touch position data already collected to dynamically define selection areas, eliminating the need for separate pointer generation mechanisms while maintaining improved selection accuracy.
3Reliability
If processing records are used to update item-touch position relations, then erroneous selection probability is reduced, but user burden increases due to requirement of correct initial processing
Solution Approach 1:
The patent applies feedback by continuously using touch position information to adjust and refine decision areas. The system incorporates real-time feedback from touch coordinates to dynamically modify selection areas, reducing erroneous selections without requiring users to perform correct initial processing or maintain processing records. The feedback loop automatically adapts to user behavior patterns.
4Device complexity
If fixed decision areas are used for item selection, then system simplicity is maintained, but erroneous selection probability increases due to area contact nature of finger touch
Solution Approach 1:
The patent applies parameter changes by dynamically modifying the decision area parameters (size, shape, position) based on touch coordinates. Instead of using fixed decision areas, the system adjusts these parameters in real-time according to where the user touches, thereby reducing erroneous selections while maintaining relatively simple system architecture through straightforward coordinate-based calculations.
Data Source
AI summary
When a touch panel is operated and erroneous processing has been performed, the probability of the same operation error next time is reduced. For this purpose, when a touch to the touch panel is detected, one of respective items in a menu, which the touch position belongs to is determined. Then processing regarding the determined item is performed. At this time, when a designation input indicating that the selection of the item corresponding to the executed processing was not intended by the operator has been made, to narrow a decision area to decide selection of the item, information indicating the decision area is updated.