Head-Mounted Display Control via External Manipulation Object
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Solution Overview
Problem
Existing head-mounted display (HMD) technologies impose a burden on users by requiring head movements to change the displayed image, limiting dynamic viewpoint changes beyond the user's movable range and potentially causing visually induced motion sickness.
Innovation Solution
A control device and method that receive position attitude information from external objects, allowing the HMD to adjust its image visual field without user head movement, enabling dynamic viewpoint changes and reducing motion sickness by selecting appropriate image visual fields based on user intentions and conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If head movement is used to change display content, then viewpoint control is achieved, but user burden increases and motion sickness risk increases
Solution Approach 1:
The patent introduces a manipulation object as an intermediary between the user and the display system. The manipulation object receives position attitude information from the user (via head movement or other input devices) and transmits this information to control the image visual field. This intermediary layer allows the system to interpret and respond to user intent without requiring direct head movement, thereby reducing user burden and motion sickness risk while maintaining effective viewpoint control.
2Ease of operation
If head movement range is limited, then comfort is improved, but viewpoint change range is limited
Solution Approach 1:
The patent decouples the control dimension from the physical head movement dimension. Instead of directly mapping head movement angles to display viewpoint angles, the system uses position attitude information of a manipulation object to control the image visual field. This dimensional transformation allows the viewpoint change range to exceed the physical head movement range, as the manipulation object can be positioned and oriented beyond what is physically possible for human head movement.
3Device complexity
If image visual field is fixed, then device complexity is reduced, but adaptability to user intentions is reduced
Solution Approach 1:
The patent implements dynamic control of the image visual field based on real-time position attitude information. The system continuously updates the display parameters according to the manipulation object's position and orientation, allowing the image visual field to adapt dynamically to user intentions. This dynamic approach maintains relatively simple device architecture while achieving high adaptability, as the control logic responds to changes in manipulation object state rather than requiring complex predictive models.
Data Source
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AI summary
[Object] To provide a control device, a control method, and a program capable of controlling display like a case in which a user performs his or her head movement although the user does not move his or her head. [Solution] There is provided a control device including: an acquisition unit configured to acquire position attitude information regarding a position or an attitude of an object related to a user manipulation located at a different position from a head of a user; and a control unit configured to control an image visual field which is a range displayed as an image on a display device mounted on the head of the user based on the position attitude information.