HMD Motion Correction for Inertial Force Filtering
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Solution Overview
Problem
Wearable electronic devices, such as Head Mounted Displays (HMDs), face issues with displaying unintended screens due to inertial forces experienced during acceleration, like when a user boards a subway, leading to an unwanted change in the displayed content.
Innovation Solution
An electronic device with a motion information sensing module and processor that acquires motion data, performs inertial force correction by removing the inertial force component from the sensed information, and adjusts the display accordingly to show the intended screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the HMD senses acceleration and changes the screen in accordance with the sensed acceleration, then the user can experience actual reality by viewing the changed screen, but the HMD displays an unintended screen when the user boards accelerating transportation means due to inertial force
Solution Approach 1:
The patent introduces an intermediary processing step between motion sensing and screen display. A correction value is calculated based on the relationship between the HMD and transportation means, acting as a mediator to adjust the raw acceleration data before it controls the screen display. This intermediary correction mechanism filters out inertial forces from transportation acceleration, allowing the system to maintain screen adaptation to user motion while preventing unintended screen changes during transportation.
2Ease of operation
If the HMD displays a screen corresponding to the sensed inertial force, then the device responds to all motion inputs, but the user views an unintended screen due to the inertial force from transportation means
Solution Approach 1:
The patent extracts and separates the inertial force component from the total motion information. By calculating a correction value that represents the inertial force effect and subtracting it from the raw acceleration data, the system isolates the user's intentional motion from the transportation-induced inertial forces. This extraction process allows the HMD to maintain motion response capability while preserving accurate user intent information for screen control.
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
Ensures that the user views the intended virtual reality screen even during acceleration, preventing unintended changes caused by inertial forces.
Implementation Method 1
The acceleration of the transportation means may result in an inertial force applied to the HMD included in an inertial frame of the transportation means. The HMD may sense the inertial force
Data Source
AI summary
Disclosed is a method of controlling an electronic device and an electronic device. The method may include: acquiring motion information of an electronic device; performing an inertial force correction for removing a part by an inertial force from the acquired motion information; and displaying a screen corresponding to the inertial force-corrected motion information.