Reduced Mobile Keypad Layout for Fewer Predictive Text Collisions
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Solution Overview
Problem
Mobile electronic devices face challenges in providing user-friendly text input due to limited surface area, leading to inefficiencies with miniaturized QWERTY keyboards and conventional 12-key telephone keypads, where key size and spacing issues, and existing text entry methods like multi-tap and predictive text input suffer from word collisions and complexity.
Innovation Solution
A reduced keypad design for mobile devices that increases the number of input keys and optimizes key arrangements to reduce word collisions, using a modified QWERTY or Dvorak layout, and incorporating predictive text input routines to enhance data entry efficiency, while maintaining user familiarity and compatibility with standard keypads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a miniaturized QWERTY keyboard is used, then the device can provide text messaging capability, but the key size and spacing are reduced making input difficult
Solution Approach 1:
The keyboard is segmented into functional zones with larger, well-spaced keys arranged in a modified QWERTY layout. The segmentation allows each key to be optimally sized for finger input while maintaining the comprehensive character set needed for text messaging, resolving the contradiction between providing full text capability and ensuring ease of input.
Solution Approach 2:
The patent transitions from a conventional flat keyboard layout to a three-dimensional arrangement where keys are positioned at different heights and depths. This dimensional change allows for larger key surfaces and better spacing while maintaining a compact overall footprint, thus providing text messaging capability without sacrificing input ease.
2Device complexity
If a conventional 12-key telephone keypad is used, then the device structure is simple, but text entry is inefficient due to word collisions and multiple key activations
Solution Approach 1:
The telephone keypad is segmented and expanded into a modified QWERTY layout with additional keys. This segmentation distributes characters more evenly across the keypad, reducing word collisions and the need for multiple key activations, thereby improving text entry efficiency while maintaining structural simplicity through a familiar keyboard configuration.
Solution Approach 2:
The patent implements a dynamic predictive text input system that adapts to user input patterns. The system dynamically reduces word collisions by learning from context and predicting intended words, thus improving text entry efficiency without requiring a complex static keypad structure.
3Productivity
If predictive text input is used on a 12-key keypad, then text entry speed can be improved, but word collisions and multiple key activations increase complexity
Solution Approach 1:
The predictive text input system is segmented into distinct functional modules: prediction engine, collision detection, and key activation management. This segmentation simplifies the overall system by making each module independent and manageable, thus improving text entry speed without proportionally increasing overall system complexity.
Solution Approach 2:
An intermediary predictive text engine is introduced between the user input and the character output. This intermediary processes input sequences, predicts intended words, and resolves ambiguities before final character display, thereby improving text entry speed while managing complexity through a dedicated intermediate processing layer.
Data Source
AI summary
An apparatus (600) is provided with a first (635) and a second (645) plurality of input keys. At least some input keys of the first plurality of input keys are associated with both a numeric value and a first set of alphabetic values, and arranged in a first alphabetic keypad layout based on their respective first sets of alphabetic values. The second plurality of input keys are positioned adjacent to the first plurality of input keys. At least some input keys of the second plurality of input keys are associated with at least one alphabetic value, and arranged in a second alphabetic keypad layout. At least some of the input keys of the first plurality of input keys have a second set of alphabetic values that is used as part of the second alphabetic keypad layout and at least some of the input keys of the first and second pluralities of input keys are arranged to provide a reduced group of words generated by a predictive text input routine for an input key sequence entered by a user.