VR Input Device One-Dimensional Position Control
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Solution Overview
Problem
Existing input devices for creating and controlling avatars in computer-generated environments, such as those described in JP 2001 171815 A, suffer from discomfort due to unexpected rotational reactions when walking transversely to the conveyor belt, especially on small surfaces, limiting user experience and causing unintended movements.
Innovation Solution
Implementing a one-dimensional position control combined with angle control, utilizing depth and color information detection to restrict lateral movement and enhance angular position awareness, along with a soft edging and sensitive pivoting to simulate real-world movements, preventing unintended rotations and maintaining frontal orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two-dimensional position control with conveyor belt rotation is used to transport the person back to the target position, then the person can walk in any direction indefinitely, but the person always rotates in an unexpected way causing discomfort and feeling unwell
Solution Approach 1:
The control system is segmented into two independent components: one-dimensional position control along the conveyor direction and angle control for frontal orientation. This separation allows each control function to operate independently, preventing the unexpected rotational reactions that occurred with coupled two-dimensional control.
Solution Approach 2:
Instead of allowing two-dimensional movement freedom and correcting position deviations (as in prior art), the invention inverts the approach by restricting lateral movement and only allowing one-dimensional motion along the conveyor, while using angle control to maintain natural orientation.
2Area of stationary object
If the device has only a small running surface, then the rotational reaction must be prompt and violent to prevent the person from leaving the running surface unintentionally, but this causes discomfort and feeling unwell
Solution Approach 1:
By segmenting the control into one-dimensional position control and angle control, the system eliminates the need for violent rotational corrections on small surfaces, as lateral position deviations are prevented rather than corrected.
Solution Approach 2:
The invention replaces the mechanical conveyor belt rotation system with an optical detection system (depth and color information detection) combined with control algorithms, eliminating the need for physical rotational corrections that cause discomfort.
3Measurement precision
If depth and color information detection is used to enable creation and control of an avatar, then the user can enter a virtual world with an authentic image of their own body and fully control their limbs, but the device complexity increases
Solution Approach 1:
The detection device serves multiple functions: it detects depth information for position control, color information for avatar creation, and joint point positions for limb control. This multi-functionality justifies the device complexity by providing comprehensive control capabilities through a single integrated system.
Data Source
Figure 1
AI summary
The invention relates to an input device for creating and controlling an avatar in a computer-generated environment, and to a method for controlling same. The immersion into the virtual reality is increased by virtue of the claimed input device and the method for controlling same allowing the user natural movement, without spatial limits, in a familiar form and with authentic solidity.