Touch Panel Audio Feedback for Blind Users
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Solution Overview
Problem
Blind individuals face difficulties in using touch panel electrical devices as they cannot visually identify graphical icons, making it challenging to operate these devices effectively.
Innovation Solution
Incorporating a notice signal generator and processing unit in touch panel electrical devices that generate sound or vibration signals based on the touched position, allowing users to recognize instructions through auditory or tactile feedback, and executing instructions upon confirmation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If touch panel electrical devices use graphical icons for operation, then the device provides attractive visual display and easy operation for sighted users, but blind users cannot identify or operate the device
Solution Approach 1:
The patent introduces audio output as an intermediary medium between the touch panel interface and blind users. The system converts visual graphical icon information into audible form through audio output modules, enabling blind users to perceive and interact with the device interface without direct visual access.
Solution Approach 2:
The patent changes the sensory parameter from visual to auditory for blind user interaction. By detecting touch positions and providing corresponding audio feedback based on touched coordinates, the system adapts the information delivery mode to suit different user needs while maintaining the same underlying touch interface.
2Illumination intensity
If touch panel replaces mechanical buttons, then the device achieves more gorgeous video display, but blind users lose tactile feedback and visual identification capability
Solution Approach 1:
The patent implements audio feedback that responds to user touch actions. When users touch specific positions on the screen, the system provides corresponding audio signals that confirm the touch location and provide information about the touched element, creating a closed-loop interaction suitable for blind users.
Solution Approach 2:
The patent replaces mechanical button feedback with audio-based feedback mechanisms. Instead of relying on mechanical tactile response or visual display, the system uses audio output to provide operational feedback, substituting the mechanical interaction model with an acoustic one.
Data Source
AI summary
A touch panel electrical device includes a touch panel, a notice signal generator and a processing unit. The processing unit is electrically connected with the touch panel and the notice signal generator respectively. The touch panel senses a touched position on the touch panel. The processing unit includes a notice-generating module. The notice-generating module makes the notice signal generator generate a notice sound signal or a notice vibration signal according to the touched position to notice a user a touched instruction corresponding to the touched position he/she touches.