Multi-character Text Input Audio Feedback Word Completion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional text input systems in mobile devices, such as automobiles, face challenges in providing effective audio feedback for non-word text strings, especially when handling groups of characters, as state-of-the-art text-to-speech systems struggle to pronounce arbitrary character combinations understandably.
Innovation Solution
A multi-character text input system comprising a handwriting recognition subsystem, a word completion subsystem, and an audio feedback subsystem that generates clarifying words and phrases based on contextual information to provide clear audio feedback for incomplete words, allowing users to understand the intended input more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If state-of-the-art text-to-speech systems are used to pronounce arbitrary character combinations, then text input speed is improved, but pronunciation understandability deteriorates
Solution Approach 1:
The patent introduces an intermediary component between the handwriting recognition and text-to-speech systems. This intermediary analyzes the recognized text string, determines if it's a valid word, and if not, generates a phonetic approximation that sounds like the intended word. This mediator resolves the contradiction by transforming arbitrary character combinations into pronounceable forms that maintain both input speed and understandability.
Solution Approach 2:
The system changes the parameter of text representation from arbitrary character combinations to phonetically approximated words. When handwriting recognition produces a non-word string, the system transforms it into a phonetic approximation that preserves the original input's sound pattern while making it pronounceable and understandable, thus resolving the contradiction between speed and understandability.
2Measurement precision
If individual character input is used, then input accuracy is improved, but input speed deteriorates
Solution Approach 1:
The patent segments the text input process into two distinct modes: multi-character burst input for speed and individual character confirmation for accuracy. The system allows users to input multiple characters in a single handwriting gesture, then presents candidate completions for confirmation. This segmentation resolves the contradiction by allowing both fast bulk input and accurate confirmation without requiring one or the other.
Solution Approach 2:
The system dynamically adjusts between different input modes based on the situation. When a handwriting gesture produces a recognizable word or close match, the system accepts it quickly. When the match is poor, it transitions to a confirmation mode where individual character correction is enabled. This dynamic adaptation allows the system to optimize for speed when possible and accuracy when needed.
3Ease of operation
If audio feedback is used for incomplete words, then driver attention is maintained, but feedback clarity deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the system analyzes the handwriting input, determines if it's a complete word, and if not, generates phonetic approximations of the intended word. This feedback loop transforms unclear incomplete words into clear phonetic representations that maintain driver attention while preserving information clarity. The system feeds back the most likely intended word in a pronounceable form.
Solution Approach 2:
The system substitutes the mechanical limitation of pronouncing arbitrary character sequences with a linguistic solution. Instead of attempting to pronounce non-words directly, it replaces them with phonetic approximations that sound like the intended words. This substitution maintains audio feedback clarity while keeping the driver engaged, resolving the contradiction between attention and clarity.
Data Source
AI summary
A system for inputting and processing handwritten, multi-character text may comprise a handwriting recognition subsystem, a word completion subsystem, and an audio feedback system. The handwriting recognition system may be configured to capture a series of handwritten characters formed by a user and to convert the handwritten characters into a set of candidate partial text strings. The word completion subsystem may be configured to identify if a candidate partial text string constitutes a word segment and if so, generate one or both of (i) at least one clarifying word and (ii) at least one clarifying phrase that includes the clarifying word. The word segment may be an arbitrary string and not correspond to a valid complete word in a language associated with the system. The audio feedback subsystem may be configured to produce an audio representation of the word segment(s), the clarifying word(s), and the clarifying phrase(s).