Handheld Device One-Handed Input Virtual Keyboard Segmentation
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Solution Overview
Problem
Handheld devices with large display screens face difficulties in inputting text using one hand due to the size of the screen, making it challenging to accurately select characters and words.
Innovation Solution
The implementation of a dual input mode on handheld devices, where the first input mode features a virtual keyboard with a central area and surrounding character selecting areas positioned at preset angles, allowing users to select characters by sliding on the screen, and a second mode with a traditional virtual keyboard at the bottom for easier operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a large display screen is used, then the visual display area is improved, but the ease of operation with one hand deteriorates
Solution Approach 1:
The virtual keyboard is segmented into multiple zones: a first virtual keyboard at the bottom for easy one-handed access, and a second virtual keyboard in the center for additional functionality. This segmentation allows users to operate the device with one hand while maintaining access to all keyboard functions.
Solution Approach 2:
The patent introduces a third dimension by displaying multiple virtual keyboards at different positions on the screen simultaneously. The first virtual keyboard is positioned at the bottom while the second is in the center, creating a multi-layered input interface that accommodates one-handed operation on large screens.
2Ease of operation
If a traditional virtual keyboard is placed at the bottom, then the ease of operation is improved, but the available display area is reduced
Solution Approach 1:
The patent makes the virtual keyboard system universal by implementing multiple virtual keyboards that serve different functions. The first virtual keyboard provides standard typing functionality, while the second virtual keyboard in the center offers additional input options, making the interface adaptable to various input needs without sacrificing display area.
3Measurement precision
If character selecting areas are positioned at preset angles around the center, then the input precision is improved, but the device complexity increases
Solution Approach 1:
The patent employs asymmetric positioning of character selecting areas around the center of the second virtual keyboard, arranged at preset angles rather than in a symmetric grid. This asymmetric layout optimizes the distribution of characters for one-handed input precision while maintaining a manageable interface structure.
Data Source
AI summary
A handheld device allowing comprehensive touch input on a small part of a large display screen includes a touch screen, a display, a touch sensor, and a control module. The handheld device enters to a first input mode in response an operation on the touch screen. The control module controls the display to display a first virtual keyboard, an input operation area, and a character input area in the first mode. In response to operations in the input operation area, the display displays a character of the first virtual keyboard in the character input area. An input method is also disclosed.