Target Direction Notification With Visual-Tactile Field-of-View Guidance
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Solution Overview
Problem
Existing head-mounted display devices struggle to accurately notify users of the direction of a target when the target is outside their primary field of view, relying solely on tactile stimulation which may not be sufficient for precise direction recognition.
Innovation Solution
A notification device that includes a display unit for image display, a vibration unit for tactile stimulation, and control units to manage these based on field-of-view regions, using visual cues and tactile feedback to guide the user to the target, adjusting display and vibration based on the target's location relative to the user's field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tactile stimulation is used to notify users of target direction, then the device can provide directional guidance, but the precision of direction recognition is insufficient
Solution Approach 1:
The patent combines visual display and tactile vibration into a unified notification system. When a target is detected in the peripheral field of view, the system merges visual cues (displayed images indicating direction) with tactile feedback (vibration patterns) to provide comprehensive directional information, thereby improving direction recognition precision beyond what either modality could achieve alone.
Solution Approach 2:
The display unit acts as an intermediary that translates the target's angular position into visual directional indicators. The control unit processes the angular position data and generates appropriate display images and vibration patterns, serving as a mediator that converts raw sensor data into comprehensible directional guidance for the user.
2Ease of operation
If the display unit shows directional information, then visual guidance is provided, but the device cannot effectively guide users to targets outside the field of view
Solution Approach 1:
The system applies different notification strategies based on the local characteristics of target position. For targets within the field of view, visual display is used. For targets in the peripheral field of view, a combination of visual and tactile notifications is applied. This localized adaptation of notification methods ensures effective guidance across all target locations while maintaining optimal user experience for each scenario.
Solution Approach 2:
The patent extends the notification system from a two-dimensional display plane to three-dimensional spatial awareness by incorporating tactile vibration. The vibration unit provides directional information along the body axis, adding a tactile dimension to the visual information displayed on the screen, thereby enabling effective guidance to targets outside the traditional field of view.
3Device complexity
If only vibration is used for notification, then the device is simple, but the user cannot accurately recognize the specific direction to the target
Solution Approach 1:
The notification system is segmented into distinct functional components: a display unit for visual information, a vibration unit for tactile feedback, and a control unit for coordinating their operation. This segmentation allows each component to specialize in its strength (visual or tactile) while working together to achieve high direction accuracy without requiring excessive complexity in any single component.
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
Enhances user guidance to targets by providing clear visual cues when within the field of view and tactile feedback when outside, ensuring accurate direction recognition and easy target location, even in less detailed or obscured views.
Implementation Method 1
a vibration unit configured to stimulate a sense of touch for a user
Data Source
AI summary
A notification device includes: a display unit configured to display an image; a vibration unit configured to stimulate a sense of touch for a user; a target identification unit configured to identify a direction from the user to a target; a region determination unit configured to determine which of a first field-of-view region having a predetermined region, a second field-of-view region adjacent to the first field-of-view region, and a third field-of-view region adjacent to the second field-of-view region is in the direction identified by the target identification unit; and a control unit configured to control the display unit and the vibration unit based on a determination result of the region determination unit. When the direction is to the second field-of-view region, the control unit displays an image indicating the direction on the display unit and controls the vibration unit according to the direction.