Bioelectric Signal-Based Handheld Controller Orientation Detection
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Solution Overview
Problem
Conventional bioelectric potential measurement systems require accurate electrode mounting and are not effective in detecting the manner of holding a controller, leading to usability issues for left-handed users and incorrect orientation handling.
Innovation Solution
An electronic device with electrodes placed on the housing for both hands, capable of extracting electrocardiographic components from bioelectric signals to determine the holding orientation and adjust button assignments accordingly, ensuring proper operation regardless of handedness or orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a controller is designed to be held in both hands with fixed button assignments, then right-handed users can operate it effectively, but left-handed users experience difficulty with up/down/right/left moves
Solution Approach 1:
The button assignment is made dynamic by detecting the holding manner through electrocardiographic component analysis. The control unit automatically switches between first and second assignment relationships based on whether the user is right-handed or left-handed, allowing the controller to adapt to different users without requiring manual reconfiguration.
Solution Approach 2:
The system changes the assignment parameter (which button corresponds to which direction) based on the detected holding manner. When a left-handed user is detected, the system switches from the first assignment relationship to the second assignment relationship, effectively changing the mapping between physical buttons and control directions to accommodate the user's handedness.
2Device complexity
If the controller provides fixed button assignments, then the system is simple to implement, but it cannot detect or adapt to the manner of holding the controller
Solution Approach 1:
The controller performs self-diagnosis by automatically detecting the user's holding manner through electrocardiographic component analysis and autonomously switching the button assignment. This eliminates the need for manual configuration or complex external detection systems, as the controller serves itself to adapt to the user.
Solution Approach 2:
The system replaces complex mechanical detection methods with electrocardiographic component analysis. Instead of using sensors, switches, or mechanical detectors to determine holding manner, the system uses electrical signal analysis from the user's body, simplifying the detection mechanism while improving accuracy.
3Measurement precision
If electrodes are placed on the housing for bioelectric potential measurement, then the system can measure electrocardiographic components, but accurate electrode mounting becomes critical for proper detection
Solution Approach 1:
The system uses multiple electrodes placed at different positions on the housing rather than relying on a single critical electrode placement. This redundancy allows the system to detect electrocardiographic components even if individual electrode positions are not perfectly accurate, reducing the impact of manufacturing variations.
Solution Approach 2:
The electrodes serve multiple functions: they provide both the reference potential for bioelectric measurement and the signal source for electrocardiographic component analysis. This multi-functionality reduces the need for separate detection mechanisms and simplifies the overall system while maintaining measurement capability.
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
The system improves operability by detecting the holding manner and adjusting button assignments, providing seamless operation for both right- and left-handed users and ensuring correct orientation, enhancing user experience and usability.
Implementation Method 1
a first electrode and a second electrode placed at positions which come in contact with the right hand and left hand of the user gripping the housing; an extractor for extracting an electrocardiographic component of the user from a potential difference between the first electrode and the second electrode
Data Source
AI summary
An exemplary electronic device is in a housing to be gripped by a right hand and a left hand of a user, and has a plurality of manipulable portions. The electronic device includes: electrodes placed at positions which come in contact with the right hand and left hand of the user gripping the housing; an extractor for extracting an electrocardiographic component of the user from a potential difference between the electrodes; a determination section for determining whether the extracted electrocardiographic component is in a positive direction or a negative direction by referring to a prestored criterion; and a change section for, in accordance with a result of determination by the determination section, changing assignment between each of the plurality of manipulable portions and a manipulation signal generated in response to a manipulation.