Multi-Input Crown Module for HMDs
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Solution Overview
Problem
Existing input devices for electronic devices, such as head-mounted displays, struggle to provide intuitive and efficient multi-directional input detection, limiting user interaction and control.
Innovation Solution
A movable touch-sensitive input device with multiple electrical paths, allowing for translation, rotation, and tilt detection, integrated with a processor to interpret finger movements and adjust display outputs accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single input device is used for head-mounted displays, then device complexity is reduced, but the ability to detect multi-directional input is limited
Solution Approach 1:
The crown module is designed to perform multiple input functions (rotation, translation, tilt) within a single integrated structure. The touch-sensitive surface detects various input modes through different interaction patterns, eliminating the need for separate input devices and achieving multi-functionality in one component.
Solution Approach 2:
The crown module is divided into functionally independent regions: an outer region for rotation detection, an inner region for translation detection, and a central region for tilt detection. Each region has its own electrical path and detection mechanism, allowing independent processing of different input directions while maintaining a unified structure.
2Adaptability or versatility
If multiple electrical paths are implemented for different input directions, then input detection capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The crown module is divided into functionally independent regions: an outer region for rotation detection, an inner region for translation detection, and a central region for tilt detection. Each region has its own electrical path and detection mechanism, allowing independent processing of different input directions while maintaining a unified structure.
3Adaptability or versatility
If the crown module integrates rotation and translation detection, then device versatility is improved, but ease of operation decreases
Solution Approach 1:
Different regions of the crown module are optimized for specific input types: the outer region responds to rotational input, the inner region to translational input, and the central region to tilt input. This localized functional distribution allows users to perform different operations by interacting with different areas of the crown, making the multi-functional device intuitive to operate.
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 interaction by providing intuitive multi-directional input detection, enabling advanced control and functionality for head-mounted displays without the need for separate remote controls.
Implementation Method 1
the touch-sensitive region includes a first electrical path, and a second electrical path, isolated from the first electrical path
Implementation Method 2
a non-conductive material positioned between the first electrical path and the second electrical path
Data Source
AI summary
A wearable device includes a housing and a display carried by the housing, a capacitive sensor carried by the housing and including a movable outer surface. The capacitive sensor can include a first set of conductors forming a first electrical path, a second set of conductors forming a second electrical path, and a set of non-conductive insulators isolating the first set of conductors from the second set of conductors. A processor can also be carried by the housing and can be in communication with the display and the capacitive sensor.