Rear Touch Panel Keyboard Input for Mobile Terminals
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Solution Overview
Problem
Existing input methods for characters and symbols on mobile terminals, such as on-screen keyboards, lack user friendliness due to limited button configurations, necessitating improved user interfaces for convenient input.
Innovation Solution
An input device with a display unit showing a keyboard screen, an input receiving unit for user selection, and a screen control unit that adjusts display priority based on rear touch panel operations, enabling efficient character and symbol input by scrolling and switching keyboards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an on-screen keyboard is used to improve user friendliness, then ease of operation is improved, but device complexity increases due to limited button configurations
Solution Approach 1:
The patent introduces a rear touch panel in addition to the front display, creating a new input dimension. This allows users to interact with the keyboard interface through multiple spatial dimensions (front display and rear panel), thereby improving ease of operation without increasing physical device complexity
Solution Approach 2:
The rear touch panel serves multiple functions: it can display keyboard interfaces, receive user input, and control display priority. This multi-functionality approach allows a single additional component to address multiple operational needs, improving ease of operation while minimizing the increase in device complexity
2Ease of operation
If a touch panel is added to the rear face for keyboard input, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The patent merges the keyboard display function and the rear touch panel input function into a unified system. The rear touch panel is integrated with the display unit to show keyboard interfaces, and the screen control unit coordinates both input sources. This merging approach allows the additional rear panel to be utilized fully for keyboard operations, improving ease of operation while managing device complexity through functional integration
3Ease of operation
If display priority is changed based on rear touch panel operation, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The screen control unit continuously monitors input operations from the rear touch panel and dynamically adjusts display priority based on this feedback. When rear panel input is detected, the system responds by changing the priority of displayed interfaces to match user intentions. This feedback mechanism improves ease of operation by making the system adaptive, while the complexity increase is managed through algorithmic control rather than hardware complexity
Data Source
AI summary
An input control unit includes: a keyboard display unit configured to display a keyboard that shows a set of a plurality of characters or symbols that can be input on a screen and receive a user's selection of a character or a symbol so as to enter the character or the symbol received from the user on a mobile terminal; an input receiving unit configured to receive the character or the symbol selected by the user from among the plurality of characters or symbols; and a screen control unit configured to change a priority of displaying the keyboard screen if an operation is received from a rear touch panel provided on the rear face of a mobile terminal.