Localized Tactile Feedback via Image-Driven Haptic Zones
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Solution Overview
Problem
Current portable devices with touch-sensitive displays lack localized tactile feedback, as they typically provide global haptic feedback that simulates button presses without replicating the sensations of displayed features, limiting the ability to differentiate tactile experiences based on image content.
Innovation Solution
A method and apparatus that determine image and touch parameters to generate tactile signals, allowing for localized tactile feedback on touch-sensitive displays by processing touch location, speed, pressure, and image characteristics such as luma, chroma, and depth to create tailored haptic effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If global haptic feedback is used to simulate button presses, then tactile feedback functionality is provided, but localized tactile feedback corresponding to displayed features cannot be achieved
Solution Approach 1:
The display surface is divided into multiple independent tactile zones corresponding to different displayed features. Each zone can generate tactile feedback independently through integrated actuators positioned beneath specific display regions, enabling localized tactile responses rather than global vibration.
Solution Approach 2:
Different regions of the display are equipped with distinct tactile characteristics by varying actuator types, positions, or control parameters. This allows each displayed feature to have its own customized tactile feedback profile matching its visual appearance, such as different textures or resistance levels.
2Ease of manufacture
If the display provides only glass or plastic sensation, then manufacturing simplicity is maintained, but realistic tactile simulation of displayed features is limited
Solution Approach 1:
Integrated actuators serve as intermediary components between the simple glass/plastic display surface and the desired complex tactile sensations. These actuators generate localized mechanical movements or forces that modify the perceived texture and sensation of the display surface without requiring complex manufacturing of the display itself.
Solution Approach 2:
The tactile characteristics are dynamically adjusted by changing actuator operating parameters such as vibration frequency, amplitude, or force magnitude based on the displayed content. This allows the same simple display surface to simulate multiple different tactile sensations by varying control parameters rather than manufacturing different physical surfaces.
Data Source
AI summary
An apparatus comprising: an image processor configured to determine at least one image parameter with respect to at least one image displayed on at least one display; a touch controller configured to determine at least one touch parameter with respect to the at least one display configured to display the at least one image; and a tactile effect generator configured to generate at least one tactile signal based on the at least one touch parameter and the at least one image parameter.