Cursor Display Control for Touch Panel Responsivity
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Solution Overview
Problem
High responsivity in electrostatic capacity touch panels causes the cursor to move unintentionally due to slight finger motions, making it difficult for users to recognize the cursor position when displaying a locus of the cursor.
Innovation Solution
A mobile terminal with a touch panel and display module that calculates and updates the cursor's display position based on touch operations, determines if the distance between the last and current positions exceeds a threshold, and displays an object indicating the last cursor position only when this distance is significant, thereby improving user recognition of the cursor's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the touch panel responsivity is set high to improve reaction to touch operation, then the responsiveness is improved, but the cursor moves unintentionally due to slight finger motions
Solution Approach 1:
The patent applies dynamics by making the cursor movement behavior adaptive rather than fixed. The system dynamically adjusts cursor movement based on the detected finger motion magnitude, allowing smooth responsive movement for intentional touches while suppressing unintended movement from slight motions. This resolves the contradiction by making the system flexible and context-aware rather than rigidly responsive or unresponsive.
2Loss of information
If an image showing the locus of the cursor is displayed to help users not lose sight of the cursor position, then the user can track cursor position, but it becomes hard to recognize the cursor position when the cursor moves due to slight finger motions
Solution Approach 1:
The patent applies local quality by making different parts of the display have different visual characteristics based on their function. The cursor itself maintains a distinct appearance from the locus trail, and the locus visibility or style may vary depending on the context. This differentiation allows users to easily distinguish the active cursor position from the historical path, resolving the confusion when the cursor moves slightly.
3Ease of operation
If the cursor moves in response to slight finger motion when displaying a locus of the cursor, then the touch panel responds to user input, but an image showing the locus of the cursor is displayed around the cursor making it hard to recognize the cursor position
Solution Approach 1:
The patent applies continuity of useful action by ensuring that the locus display continuously provides useful information about cursor movement while maintaining cursor position clarity. Rather than intermittently displaying or hiding the locus, the system continuously renders it in a way that complements rather than obscures the cursor, allowing users to track movement while always knowing the current position.
Data Source
AI summary
A mobile phone comprises a display provided with a touch panel, etc. When an end portion of the touch panel is touched, a touch icon that indicates a touch position is displayed. Furthermore, if a distance between the touch position and the end portion of the touch panel becomes larger than a first threshold value, a cursor is displayed based on the touch position. This cursor moves if a touch position changes with a touch operation. At this time, if a moving amount of the cursor is large, an afterimage object that indicates the last position (locus) of the cursor is displayed. On the other hand, a moving amount of the cursor is small, the above-described afterimage object is not displayed.


