Virtual Keypad Gesture Control for Mobile Text Cursor Positioning
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Solution Overview
Problem
Existing mobile terminals require users to change hand position and precisely touch between letters to move a cursor, making it difficult to accurately select locations in the text display area for message editing.
Innovation Solution
An apparatus and method that allow users to move a cursor within a mobile terminal's keypad display area using gestures, such as touch-and-drag operations, to facilitate cursor movement and selection area adjustment, enabling more intuitive message editing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user touches a specific location in the text display area to move the cursor, then the cursor moves to the touched location, but the user must change hand position and precisely touch between letters, making it difficult to accurately select locations
Solution Approach 1:
The patent introduces a virtual keypad display area that maps to the text display area, allowing users to perform gestures in the keypad area to control cursor movement in the text area. This dimensional mapping transforms the interaction from direct text area touching to keypad area gesturing, solving the precision-convenience contradiction.
Solution Approach 2:
The virtual keypad acts as an intermediary between the user and the text display area. Users interact with the keypad display area through gestures, and the system translates these gestures into cursor movements in the text display area, eliminating the need for precise direct touching of the text area.
2Manufacturing precision
If the user directly touches the text display area to select a location, then the cursor moves to that location, but the user must precisely touch between letters which is difficult when holding the terminal in a comfortable position
Solution Approach 1:
The patent creates a virtual keypad display area that provides a larger, more accessible interaction zone. Users can perform gestures in this keypad area without needing to precisely touch the text display area, maintaining selection accuracy while improving hand position flexibility.
Solution Approach 2:
The interaction area is segmented into a virtual keypad display area and a text display area. The keypad area serves as a control interface with larger, more accessible zones for gesture input, while the text area maintains its original function for display and precise text interaction.
3Ease of operation
If the user uses traditional touch input in the text display area, then cursor movement is achieved, but the operation becomes complex requiring precise touching and hand position changes
Solution Approach 1:
The virtual keypad display area serves multiple functions: it acts as both a visual representation of the text area and a gesture control interface. This multi-functionality simplifies cursor control by providing a unified interaction zone that handles both display and control operations.
Solution Approach 2:
The patent merges the keypad display area and text display area into a coordinated system where gestures in the keypad area directly control cursor movement in the text area. This merging eliminates the need for separate control mechanisms and reduces interaction complexity.
Data Source
AI summary
An apparatus and method of editing text in a mobile terminal include a display unit, configured to display a text display area, a touch sensitive keypad display area, at least one text character in the text display area, and a cursor in the text display area; and at least one processor, configured to detect a first gesture in a touch input in the touch sensitive keypad display area, and control moving, upon detecting the first gesture, the cursor in the text display area, according to the touch input in the touch sensitive keypad display area. The first gesture includes a touch of a point in the touch sensitive keypad display area where no key is displayed.