Pen Controller Circumferential Marker for Accurate Roll Detection
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Solution Overview
Problem
Conventional pen-shaped controllers face difficulties in accurately detecting posture using markers due to visibility issues, especially when the marker is obscured by the user's hand.
Innovation Solution
A pen-shaped controller with a marker arranged along the circumferential direction on its side surface, incorporating a code for detecting the roll angle, and a computer system that decodes the marker to determine the posture using an imaging device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a marker is provided on the surface of the controller for posture detection, then the posture detection capability is improved, but the marker visibility deteriorates when obscured by the user's hand
Solution Approach 1:
The marker is arranged in the circumferential direction around the side surface of the housing, transforming a single-plane marker into a three-dimensional circumferential pattern. This allows the imaging device to detect the roll angle by observing the marker's angular position around the housing, enabling posture detection even when part of the marker is obscured by the user's hand.
Solution Approach 2:
The marker includes a code that enables detection of the roll angle about the housing shaft. By encoding rotational position information into the marker's circumferential pattern, the system can determine the controller's orientation even when the marker is partially hidden, as the visible portion's angular position relative to the housing provides sufficient information for posture calculation.
2Measurement precision
If the marker is arranged circumferentially on the side surface to enable roll angle detection, then the posture detection completeness is improved, but the device complexity increases
Solution Approach 1:
The circumferential marker on the side surface serves multiple functions: it enables detection of the roll angle about the housing shaft, maintains visibility from various viewing angles, and works in conjunction with the position indicator at the front end. This single marker arrangement provides comprehensive posture information (pitch, yaw, and roll angles) without requiring multiple separate markers.
Solution Approach 2:
The marker is specifically positioned on the side surface of the housing in the circumferential direction, placing it in an optimal location that is generally visible to the imaging device while maintaining the controller's ergonomic design. This localized placement allows roll angle detection without interfering with the user's grip or adding overall system complexity.
Data Source
AI summary
Provided is a controller including a housing and a position indicator that is provided at a front end of the housing and indicates a position in a space. The housing includes a marker provided along a circumferential direction on a side surface of the housing, the marker including a code for detecting a rotation angle about a housing shaft of the housing.