Finger-Worn Ring Input Device for VR Interaction
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Solution Overview
Problem
Existing input devices for VR, AR, and MR applications are often bulky, uncomfortable for extended wear, and require additional tracking mechanisms, leading to poor user experience and unnatural movements.
Innovation Solution
A compact ring input device worn on the finger that allows intuitive user inputs through rotary and lateral movements, providing haptic feedback and biometric security features, seamlessly integrating with external devices without the need for separate tracking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional input devices are used for VR/AR/MR applications, then device functionality is achieved, but user comfort deteriorates due to bulky size and extended wear requirements
Solution Approach 1:
The patent implements a nested ring structure where an outer ring containing input mechanisms is positioned over an inner ring containing sensors and electronics. This nested configuration allows multiple functional components to be integrated within a compact footprint, reducing overall device size while maintaining operational capabilities. The outer ring can rotate independently over the inner ring, enabling input operations without increasing the device's base dimensions.
Solution Approach 2:
The patent transitions from traditional two-dimensional input surfaces to a three-dimensional ring structure that wraps around the finger. This dimensional change allows the input device to utilize the finger's circumference, effectively increasing the available input area without increasing linear dimensions. The ring configuration enables inputs from multiple angles and positions around the finger, providing enhanced functionality within a compact form factor.
2Ease of operation
If traditional input devices are used for VR/AR/MR applications, then device functionality is achieved, but user comfort deteriorates due to extended wear requirements
Solution Approach 1:
The patent employs flexible materials for the ring structure, including a flexible circuit board that conforms to the finger's shape. This flexibility allows the device to adapt to natural finger movements and contours, reducing pressure points and discomfort during extended wear. The flexible construction enables the ring to stretch and flex with the finger while maintaining electrical connectivity and structural integrity.
Solution Approach 2:
The patent incorporates dynamic elements including a rotatable outer ring that can move independently over the inner ring, and flexible components that adapt to finger movements. These dynamic features allow the device to move with the user's natural gestures rather than restricting movement, reducing fatigue and discomfort during prolonged use. The rotational mechanism provides tactile feedback while maintaining smooth, natural motion.
3Measurement precision
If separate tracking mechanisms are used, then input tracking is achieved, but device complexity increases
Solution Approach 1:
The patent implements self-service tracking where the ring device uses its own integrated sensors (accelerometers, gyroscopes, magnetometers) to track its position and orientation relative to the head-mounted display. This self-contained tracking system eliminates the need for separate external tracking cameras or markers, reducing overall system complexity while maintaining precise input tracking. The device autonomously determines its spatial relationship to the user's head and the virtual environment.
Solution Approach 2:
The patent merges multiple functions into the ring device, combining input mechanisms (rotational controls, buttons), sensors (accelerometers, gyroscopes, magnetometers), biometric authentication (fingerprint sensor), and tracking capabilities into a single integrated unit. This consolidation eliminates the need for separate tracking devices and reduces the number of components the user must wear and manage, simplifying the overall system while maintaining full functionality.
4Ease of operation
If compact form factor is used, then wearability is improved, but device functionality may be compromised
Solution Approach 1:
The patent implements multi-functionality within the compact ring by incorporating diverse input mechanisms (rotational outer ring, push buttons, touch surfaces), biometric authentication (fingerprint sensor), wireless communication (Bluetooth, NFC), and environmental sensing. This universal design allows the small device to perform multiple functions that would typically require separate devices, including input control, authentication, communication, and sensing, all within a finger-wearable form factor.
Solution Approach 2:
The patent uses nested rings where the outer ring contains input mechanisms and the inner ring contains sensors and electronics. This nested configuration maximizes functional density by placing different functional layers concentrically around the finger. The outer ring provides mechanical input surfaces, while the inner ring houses electronic components, creating a compact yet functionally rich device that fits comfortably on the finger.
Data Source
AI summary
An external device, such as a head-mountable device, can be operated with a ring input device worn on a finger of a user. Such devices can be operated to provide inputs that are received and acted upon by the external device. The inputs can be provided as rotating, tilting, and/or sliding at least a portion of the ring input device with another finger of the user. The ring input device can provide feedback to the user as confirmation that the inputs are being received. A feedback system can also be operated to limit or otherwise provide a force on the finger and/or another portion of the hand to simulate sensations perceived by the user.