Cellular Phone Numeric Keypad Text Input Control
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Solution Overview
Problem
Current cellular phone terminals lack the ability to directly input arbitrary text on the initial screen, limiting usability and operability, especially for communication tools like email and web services, which heavily rely on text input.
Innovation Solution
An information processing apparatus and cellular phone terminal with a display unit, operation unit featuring a numeric keypad as a text input key, and a control unit that allows direct text input on the initial screen, enabling users to select and start applications using the inputted text, while maintaining numeric input functionality by determining input type based on predetermined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the numeric keypad is used only for numeric input on the initial screen, then the operability for telephone functions is maintained, but the usability for text-intensive functions is limited
Solution Approach 1:
The numeric keypad is designed to serve dual purposes: it can input numeric strings for telephone functions and text strings for text-intensive functions. The control unit determines the input type based on predetermined conditions and processes accordingly, allowing one component to fulfill multiple functions without requiring separate input devices.
2Adaptability or versatility
If text input is enabled on the initial screen, then the usability for communication tools is improved, but the complexity of input processing increases
Solution Approach 1:
The system changes the interpretation parameter of the numeric keypad based on detected input patterns. When text input conditions are met (such as specific key sequences or patterns), the control unit switches the processing mode from numeric to text input. This parameter change allows the system to handle different input types without adding physical complexity.
Solution Approach 2:
The control unit acts as an intermediary that receives input from the numeric keypad and routes it to appropriate processing paths. It determines whether the input should be treated as numeric or text based on predetermined conditions, thereby managing the complexity of handling multiple input types through a single mediation layer.
3Productivity
If the numeric keypad is used for text input, then the number of operations for text input is reduced, but the precision of numeric input may be affected
Solution Approach 1:
The system dynamically adjusts the function of the numeric keypad based on the input context. When text input is detected, the keypad operates in text mode with multi-character assignment; when numeric input is detected, it switches to numeric mode with single-digit interpretation. This dynamic switching allows the same hardware to optimize for different input types without compromising precision.
Data Source
AI summary
Disclosed is an information processing apparatus including a display unit displaying information on a display screen, an operation unit including a text input key, and a control unit. The control unit displays text in response to input from the operation unit in a state of displaying an initial screen on the display screen, shows an application using text to a user for selection, starts up the application in accordance with the user's selection, and executes the application, using the text inputted from the operation unit.