Touch-Sensitive Display Haptic Feedback via Image Analysis
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Solution Overview
Problem
Touch-sensitive display devices struggle to provide timely and accurate haptic feedback without pre-transmitted button position data, especially when the display device is not in the user's field of view or when the button positions change, leading to delayed or absent feedback.
Innovation Solution
The touch-sensitive display device autonomously determines button positions through image analysis of the operator interface, using differences in color, brightness, and texture, and generates haptic feedback without external data transmission, allowing for immediate and selective feedback upon contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If button position data is transmitted from an external processing unit to the touch-sensitive display device, then haptic feedback can be provided accurately, but the system complexity and data transmission requirements increase
Solution Approach 1:
The touch-sensitive display device autonomously determines button positions by analyzing image data of the operator interface displayed on its own screen. The device processes the visual information itself to identify button locations, boundaries, and characteristics, eliminating the need for external processing units to provide button position data. This self-service approach reduces system complexity while maintaining haptic feedback accuracy.
2Reliability
If button position data is transmitted externally, then haptic feedback can be provided, but transmission delays may cause feedback to occur too late to be perceived as helpful
Solution Approach 1:
The touch-sensitive display device performs real-time analysis of the displayed operator interface to determine button positions. By processing image data locally and immediately, the device eliminates data transmission delays to external processing units and back. This enables timely haptic feedback that occurs at the moment of touch, maintaining the perceptual relevance and helpfulness of the feedback.
3Device complexity
If the touch-sensitive display device autonomously determines button positions through image analysis, then data transmission is reduced, but the device must process image data to identify button positions accurately
Solution Approach 1:
The image analysis system identifies buttons by detecting differences in color, brightness, and texture between button regions and the surrounding operator interface. Buttons typically have distinct visual characteristics such as different background colors, borders, or shading that differentiate them from other interface elements. The system analyzes these visual properties to accurately determine button positions, boundaries, and clickable areas.
4Ease of operation
If haptic feedback is provided for all contact positions, then user feedback is consistent, but unnecessary haptic feedback may be provided in regions not assigned to buttons
Solution Approach 1:
The system provides haptic feedback selectively based on the analyzed image data. By identifying the precise positions and boundaries of buttons through image analysis, the device activates haptic feedback only in regions corresponding to actual buttons or interactive elements. Non-button regions do not trigger haptic feedback, energy is conserved while maintaining consistent user feedback for valid interactions.
Data Source
AI summary
A method for providing haptic feedback to an operator of a touch-sensitive display device. The method includes providing an operator interface to be represented in the display device as image data; the operator interface having at least one button assigned to a function to be controlled, graphically displayed in the operator interface, and graphically delimited from the rest of the operator interface; analyzing the image data for a presence and a position of shapes for representing a button; determining an intended display region of a shape, which is to be represented and is identified as a button; representing the image data of the operator interface in the touch-sensitive display device; outputting haptic feedback in response to detection of contact with the touch-sensitive display device in the region of a surface of the touch-sensitive display device which is assigned to a display region of a shape identified as a button.