Touch Cursor Rotation for Edge Selection Precision
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Solution Overview
Problem
Touch devices face challenges in accurately selecting small objects on touch screens due to the limitations of traditional cursors, which struggle to position pointers precisely along certain edges, making it difficult for users to interact with small displayed elements.
Innovation Solution
A touch device is configured to display a touch-activated cursor that automatically rotates based on movement across defined transition regions bounded by rotational boundaries, enhancing the user's ability to select objects by adjusting the cursor's orientation accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional cursor is used on a touch screen, then the device structure remains simple, but the cursor cannot accurately select small objects along certain edges
Solution Approach 1:
The cursor orientation is made dynamic by automatically rotating it based on the direction of movement detected by the system. As the user drags the cursor in different directions, the system rotates the cursor to align with the movement trajectory, enabling accurate selection of objects along any edge orientation without requiring complex manual cursor rotation controls.
Solution Approach 2:
The cursor automatically adjusts its own orientation based on movement detection. The system monitors the drag direction and autonomously rotates the cursor to the appropriate angle, eliminating the need for users to manually control cursor rotation while achieving precise positioning along various edges.
2Adaptability or versatility
If the cursor orientation is fixed, then the control mechanism is simple, but the cursor tip cannot reach objects along certain edges
Solution Approach 1:
The cursor transitions from a fixed orientation to a dynamic one that automatically adapts to the direction of user input. The system detects movement in transition regions and rotates the cursor accordingly, allowing the cursor tip to reach objects along any edge while keeping the control mechanism relatively simple through automated rotation logic.
Solution Approach 2:
The cursor's orientation parameter is changed dynamically based on movement detection. When the cursor enters or exits transition regions, the system modifies the orientation angle to align with the desired selection direction, enabling the cursor to adapt to different edge orientations without requiring complex manual control interfaces.
3Quantity of substance
If small objects are displayed on the screen, then the information density increases, but the difficulty of selecting these objects increases
Solution Approach 1:
By making the cursor orientation dynamic and automatically rotating it to align with movement direction, the system enables users to precisely target small objects even when densely packed. The automated rotation ensures the cursor tip always points in the correct direction for selection, maintaining ease of operation despite high information density.
Solution Approach 2:
The patent replaces manual cursor rotation control with an automated system that detects movement and rotates the cursor programmatically. This substitution of mechanical/manual control with an automated detection-and-rotation system allows users to easily select small objects by simply dragging the cursor, without needing to manually adjust orientation.
Data Source
AI summary
A method for displaying of a touch cursor is provided. The method is adapted to an electronic apparatus having a touch display unit. The touch display unit has a display area. The method includes the following steps. At least one first dimension boundary and at least one second dimension boundary are defined in the display area. A cursor, which has a pointing area and a touchable area, is displayed. When a touch event occurs in the touchable area, the cursor is correspondingly moved according to a touch coordinate of the touch event. When a reference point of the cursor passes two of the at least one first dimension boundary or two of the at least one second dimension boundary, the cursor is rotated for adjusting a relative position of the pointing area and the touchable area.