Haptic Feedback Touch Screen for Sight Independent Activity Reports
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Solution Overview
Problem
Current touch screen interfaces rely heavily on visual feedback, making it difficult for users without sight or those in situations where visual attention is not feasible to interact with devices effectively, such as blind users or those in busy environments.
Innovation Solution
Implementing a pulse gesture that allows users to receive haptic feedback on touch screens, enabling sight-independent interaction by using a combination of touch and haptic feedback to provide information about selected items or applications, with a feedback lexicon defining the type and frequency of vibrations based on activity levels or rankings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual feedback is used in touch screen interfaces, then information delivery is clear and precise, but accessibility for blind users or users in environments where visual attention is not feasible is poor
Solution Approach 1:
The patent replaces visual feedback (optical system) with haptic feedback (mechanical vibration system). The tactile feedback device generates vibrations that convey information about selectable items and application status through touch, allowing blind users to interact with the device without visual input while still receiving meaningful information feedback.
Solution Approach 2:
The patent introduces haptic feedback as an intermediary between the user and the device interface. Instead of direct visual contact with the screen, the user interacts through touch and receives information through vibration patterns, which mediate the communication between the user's touch gesture and the device's response.
2Adaptability or versatility
If haptic feedback is added to touch screen interfaces, then accessibility for blind users is improved, but device complexity increases
Solution Approach 1:
The patent makes the touch screen serve multiple functions: it acts as both the display interface for visual users and the tactile input interface for blind users. The same touch-sensitive screen that provides visual feedback also detects touch gestures and triggers haptic feedback, eliminating the need for separate hardware components and reducing overall system complexity.
Solution Approach 2:
The patent changes the feedback parameter from visual (light, color) to mechanical (vibration frequency, amplitude). By modifying the output parameters of the existing touch screen system to include haptic feedback instead of adding entirely new subsystems, the patent achieves accessibility enhancement while controlling complexity.
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 users to interact with touch screen devices without needing to visually see the screen, enhancing accessibility and usability in various situations by providing tactile feedback indicative of application activity or status.
Implementation Method 1
with numerous different technologies being employed for sensing a particular point at which an object may contact the touch screen display
Implementation Method 2
the user may receive haptic feedback regarding the selectable item via the user's fingers
Data Source
AI summary
A method for providing sight independent activity reports responsive to a touch gesture may include receiving an indication of a pulse gesture being performed by at least two fingers with respect to a selectable item displayed at a touch screen display, determining a status with respect to activity associated with an application corresponding to the selectable item, and causing provision of haptic feedback to the at least two fingers based on the status. A corresponding apparatus and computer program product are also provided.