Optical Display Gaze Adaptation for Blind Operation
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Solution Overview
Problem
Touch-sensitive optical displays in vehicles pose challenges for operation while driving, as they lack palpable borders and require direct gaze, making 'blind' or partial operation difficult due to the absence of haptic feedback and clear functional region differentiation.
Innovation Solution
Implementing a second display and operating mode that enhances brightness and contrast, enlarges functional regions, reduces their number, increases the necessary force for triggering control signals, and provides haptic and thermal feedback to facilitate 'blind' operation by analyzing gaze direction and head position using cameras, allowing operation without direct gaze.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a touch-sensitive optical display is used in a vehicle, then the display functionality is integrated, but the operation becomes difficult when the driver needs to maintain gaze on the road
Solution Approach 1:
The patent implements dynamic adaptation of the user interface based on detected gaze direction. The system automatically switches between different operating modes (first mode for direct gaze, second mode for averted gaze) to optimize ease of operation while maintaining display functionality integration. This dynamic behavior resolves the contradiction by making the system adaptive to the driver's attention state.
Solution Approach 2:
The system uses gaze detection technology to continuously monitor the driver's eye position and provides feedback by adjusting the operational mode accordingly. This feedback mechanism enables the display to understand when the driver is looking at the road versus looking at the display, automatically adapting the interface to maintain both functionality and operability safety.
2Loss of information
If the display operates in normal mode with standard brightness and functional regions, then the interface is clear and functional, but blind operation or operation with partial gaze is difficult
Solution Approach 1:
The patent dynamically adjusts display parameters including brightness, contrast, and functional region configuration based on the detected operating mode. When blind operation is detected, the system enlarges functional regions and adjusts brightness to enhance tactile localization and visual distinction without requiring direct gaze, thereby enabling operation while maintaining information clarity.
Solution Approach 2:
The system changes multiple display parameters simultaneously when switching to the second operating mode: increasing brightness, enlarging functional region sizes, and potentially adjusting contrast. These parameter changes make the interface more accessible for blind or partial-gaze operation while preserving the essential information needed for operation.
3Ease of operation
If functional regions are enlarged to facilitate blind operation, then operability improves, but the number of displayable functions decreases
Solution Approach 1:
The patent implements dynamic reconfiguration of the user interface based on the operating mode. When in the second mode (blind operation), the system displays fewer but enlarged functional regions for easy operation. When direct gaze is detected, the system can display more functions in a compact layout. This dynamic adaptation resolves the contradiction by making the number of displayable functions variable rather than fixed.
Solution Approach 2:
The patent segments the operational functions into different levels or groups that can be accessed sequentially. The first level displays the most important functions in enlarged format for blind operation, while additional functions can be accessed through hierarchical navigation or submenu structures, maintaining versatility without compromising the ease of primary operations.
4Measurement precision
If the display requires direct gaze for operation, then precision of interaction is high, but the driver's attention must be diverted from the road
Solution Approach 1:
The patent dynamically adapts the operational requirements based on the driver's gaze state. When the driver is looking at the road, the system accepts operations with lower precision requirements (enlarged functional regions). When the driver is looking directly at the display, the system can require more precise interactions. This dynamic adjustment maintains safety by never requiring high-precision operations when the driver's attention is on the road.
Solution Approach 2:
The system continuously monitors gaze direction and provides feedback by adjusting the operational mode in real-time. This feedback loop ensures that the precision requirements for interaction are always appropriate for the current attention state, preventing situations where high precision is required when the driver should be focusing on the road.
Data Source
AI summary
A method for optimizing the operation of a touch-sensitive optical display involves analyzing the gaze direction of a person using the optical display. At least two display and operating modes are available. A first display and operating mode is activated when the gaze direction of the person is directed in the direction of the optical display. A second display and operating mode is always activated when the gaze direction of the person is not or only partially directed on the optical display.