Magnified View Cursor Repositioning on Touch Displays
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Solution Overview
Problem
Touch-sensitive displays face challenges in accurate cursor positioning due to finger inaccuracy and technological limitations, leading to frequent misplacement of cursors during editing tasks on small devices like mobile phones and tablets, where users struggle to precisely navigate and correct errors.
Innovation Solution
The system presents a magnified view of the touched area along with an indicator, maintaining it for a predetermined period after initial touch signaling, allowing users to reposition the indicator with greater precision by enabling second touch signaling within this period, and allowing the magnified view to be movable or static, with the option to adjust granularity based on repeated positioning attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a magnified view is presented in response to touch signaling, then measurement precision of cursor positioning is improved, but device complexity increases
Solution Approach 1:
The display is segmented into a magnified view portion and a non-magnified view portion, allowing the cursor positioning interface to be separated from the main display area. This segmentation enables precise cursor positioning in the magnified area while keeping the overall device complexity manageable through modular design.
Solution Approach 2:
The patent introduces a spatial dimension by presenting a magnified view that is positioned away from the associated portion of the touch-sensitive display. This dimensional separation allows users to see both the magnified cursor position and the overall context simultaneously, improving measurement precision without significantly increasing operational complexity.
2Ease of operation
If the magnified view is maintained for a predetermined period, then ease of operation is improved, but loss of time increases
Solution Approach 1:
The magnified view is maintained for a predetermined period after the initial touch signaling to allow users to reposition the cursor if needed. This preliminary maintenance of the magnified state provides users with additional time to correct positioning errors without immediately returning to the normal view, thereby improving ease of operation.
Solution Approach 2:
The system dynamically adjusts the display state by maintaining the magnified view for a predetermined period before automatically returning to the normal view. This dynamic transition allows users to perform cursor repositioning operations during the maintenance period while minimizing overall time loss by automatically reverting to the normal state after the period expires.
3Measurement precision
If second touch signaling is allowed during the predetermined period, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system provides visual feedback by maintaining the magnified view during the predetermined period, allowing users to see the effect of their second touch signaling in real-time. This feedback mechanism enables precise indicator positioning by showing users exactly where their touches are registering, improving measurement precision while keeping the interface relatively simple through intuitive visual response.
Data Source
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Figure 2a~2b
Figure 3a
AI summary
In one or more embodiments described herein, there is provided an apparatus which comprises at least one processor and at least one memory including computer program code. The at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus to perform certain steps. Firstly, the apparatus is caused to present, in response to detection of first touch signalling on a particular portion of a touch-sensitive display, a magnified view of at least that particular portion of the touch-sensitive display and an indicator positioned corresponding to the detected position of the first touch signalling. Secondly, the apparatus is caused to, upon release of the first touch signalling, maintain the magnified view of that particular portion and the positioned indicator for a predetermined period. Thirdly, the apparatus is caused to allow for detection of second touch signalling during the predetermined period to allow the user to cause movement of the position of the indicator.