Acoustic Text Input via Surface Writing Sensing
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Solution Overview
Problem
The small size of mobile terminal displays makes text input via soft keyboards inconvenient, especially for elders, and is exacerbated by the miniaturization of wearable devices, leading to increased error rates and the need for an effective text input method that does not rely on the display screen.
Innovation Solution
An acoustic sensing-based text input method where audio information is obtained from users writing on objects other than the mobile terminal's screen, processed to recognize letters, and sent to a server for interpretation, with the input result returned to the terminal for display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If text input is performed via soft keyboard on display screen, then text input function is achieved, but convenience deteriorates due to small screen size
Solution Approach 1:
The patent replaces the mechanical interaction of pressing physical or on-screen keys with acoustic sensing of writing sounds. Users write text on any surface, and the mobile terminal captures the acoustic signals generated during writing, converting them into text input without requiring display screen interaction.
Solution Approach 2:
The patent introduces acoustic sensing technology as an intermediary between the user's writing action and the text input system. The acoustic module captures writing sounds, and the processor interprets these sounds to recognize letters, serving as a mediator that eliminates the need for direct screen interaction.
2Volume of moving object
If display screen size is reduced for portability, then device portability is improved, but text input accuracy deteriorates
Solution Approach 1:
The patent substitutes the visual-mechanical input method (pressing keys on screen) with an acoustic recognition method. This allows the device to maintain small volume while improving input accuracy, as acoustic sensing is not constrained by screen size and can recognize writing with high precision.
3Productivity
If soft keyboard is used on small screen, then text input function is maintained, but error rate increases
Solution Approach 1:
The patent replaces the error-prone soft keyboard interface with acoustic writing recognition. Users naturally write letters on any surface, and the system captures and recognizes the acoustic signals, eliminating errors associated with small keyboard buttons while maintaining efficient text input.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables effective text input without relying on the display screen, improving convenience and reducing error rates by using acoustic sensing to capture and process writing sounds, allowing users to input text without interacting with the screen.
Implementation Method 1
an acoustic sensing module, configured to obtain audio information generated when a user writes
Data Source
AI summary
Embodiments of the present application provide an acoustic sensing-based text input method, comprising: obtaining audio information corresponding to text to be input; dividing the audio information to obtain an audio segment for each letter to be recognized in the text to be input; sending to the server, a type of the text to be input, the audio segments for letters to be recognized, and arrangement of the audio segment for the letter to be recognized in the audio information; receiving input result returned by the server, and displaying, based on the input result, text information corresponding to the text to be input on the display screen of the mobile terminal. The method allows effective text input without relying on a display screen.