HMD Visual Field Layout for Hands-Free Work Manual Viewing
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Solution Overview
Problem
Existing display systems for workers in factory environments, such as manufacturing and equipment inspection, are not suitable as they often obstruct the view of the work area and require manual operation to access work manuals, hindering efficiency.
Innovation Solution
A display system comprising a head-mounted display (HMD) and a smartphone that generates and displays a display source image with adjustable regions for procedure manuals and drawings, allowing workers to view information without obstructing their view of the work area, with display modes adapting to the worker's orientation and task requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a display device is arranged near the work target, then the worker can easily access work manuals, but the display device obstructs the worker's view of the work area
Solution Approach 1:
The patent transitions from a physical display device in real space to a virtual display in augmented reality space. The HMD overlays work manual information in the worker's visual field without occupying physical space near the work target, thus eliminating view obstruction while maintaining information accessibility.
Solution Approach 2:
The patent creates a virtual copy of the work manual information and displays it through the HMD. Instead of using a physical display device, the system projects digital representations of manuals and drawings into the worker's field of view, allowing access without physical obstruction.
2Adaptability or versatility
If a hand-held display device is used, then the display can be portable, but the worker cannot use both hands for work tasks
Solution Approach 1:
The patent replaces the mechanical hand-held display system with an optical/augmented reality system. The HMD displays work manual information in the worker's visual field, eliminating the need to hold a display device and enabling full hand availability for work tasks while maintaining portability through head-mounted wearability.
3Ease of operation
If the display mode is fixed, then the device is simple to operate, but the display cannot adapt to different work scenarios and orientations
Solution Approach 1:
The patent implements dynamic display mode switching based on the HMD's orientation and work scenario. The system automatically adjusts between first display mode (fixed region) and second display mode (orientation-based region) to optimize information presentation for different working conditions, balancing simplicity with adaptability.
4Adaptability or versatility
If the first display region changes according to orientation, then the display adapts to worker's view, but the display becomes complex to control
Solution Approach 1:
The patent implements self-service orientation-based display control where the HMD automatically detects its orientation and adjusts the first display region accordingly. The system autonomously adapts the display without requiring manual intervention, reducing control complexity while maintaining high adaptability to different working orientations.
Data Source
AI summary
A display system includes a display and a detector configured to detect an orientation of the display. The display system includes a display source image generation unit configured to generate a display source image including a first image and a second image related to this first image; and a visual field image display unit configured to display the first image in a first display region of the display and display the second image in a second display region of the display. The visual field image display unit is configured to set a predetermined fixed region of the display as the first display region when a display mode associated with the first image is a first display mode, and determine the first display region according to the orientation of the display when the display mode is a second display mode.