See-through Head-mounted Device Navigation Adaptation
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Solution Overview
Problem
Navigation devices based on GPS technology are not adapted for users with visual impairments, leading to increased route errors and extended travel times, as they do not provide customized visual guidance tailored to individual vision needs.
Innovation Solution
A see-through head-mounted device navigation method that customizes visual aid guidance by using wearer-specific visualization parameters, such as prescription data, to enhance the navigation experience and facilitate travel for individuals with visual impairments, by adapting the navigation visual aid function based on geo-position and ophthalmic data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard GPS navigation devices are used, then basic navigation functionality is provided, but users with visual impairments experience increased route errors and extended travel times
Solution Approach 1:
The patent applies local quality by customizing the visual presentation of navigation information according to the user's specific visual capabilities. Different users receive differently adapted visual aids - such as adjusted text sizes, contrast levels, and presentation formats - tailored to their individual visual needs, thereby improving navigation accuracy without extending travel time
Solution Approach 2:
The system changes visual parameters (text size, contrast, font type, presentation format) based on user-specific ophthalmic data. By adjusting these parameters according to each user's visual profile, the navigation device maintains high reliability for users with visual impairments while preventing time loss due to navigation errors
2Reliability
If standard GPS navigation devices are used, then navigation information is provided, but users with visual impairments experience route errors
Solution Approach 1:
The patent implements local quality by adapting the visual characteristics of navigation information to match each user's specific visual capabilities. Users with different types and degrees of visual impairment receive customized visual presentations, ensuring that route information is perceived accurately by each individual, thereby eliminating route errors
Solution Approach 2:
The system incorporates feedback mechanisms where the user's visual response and interaction patterns are monitored and used to further refine the visual presentation of navigation information. This continuous adaptation ensures that the information remains accurately perceivable throughout the journey
3Adaptability or versatility
If customized visual aid guidance is implemented, then navigation is adapted to individual vision needs, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a system that can serve multiple user types through a single platform. The head-mounted device incorporates a universal architecture that handles various visual impairment types (myopia, hyperopia, astigmatism, color blindness) using the same core technology, thereby achieving high adaptability without proportionally increasing device complexity
Solution Approach 2:
The system performs preliminary action by pre-configuring visual aid parameters based on user-specific ophthalmic data before the navigation journey begins. This advance customization eliminates the need for complex real-time adjustments during navigation, simplifying the system architecture while maintaining high adaptability
Data Source
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AI summary
A navigation method for a wearer of a see-through head mounted device, the method comprising: • - a wearer visualization parameter providing step (S1), during which at least one wearer visualization parameter is provided, • - a geo-position determining step (S2), during which the geo- position of the wearer along a route is determined, • - a geo-position comparing step during which the geo-position of the wearer determined during the geo-position determining step is compared to stored geo-positions along the route and • - a navigation visual aid function adapting step (S3) during which upon matching of the geo-position of the wearer with one of the stored geo-positions, the navigation visual aid function is adapted based on the wearer vision parameter and the geo-position of the wearer to facilitate the guiding of the wearer