Head Mount Display Volume Control via Mounting Sensor Detection
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Solution Overview
Problem
Head mount displays (HMDs) often experience unintended volume changes due to external factors when not in use, leading to potential auditory disorders or health issues, as existing solutions fail to prevent incorrect operations effectively when the user is not wearing the device.
Innovation Solution
Incorporating a mounting sensor to detect when the HMD is not worn, the control section invalidates all volume changing operations, ensuring that volume adjustments can only be made when the device is mounted, thereby preventing accidental or external-induced volume changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the HMD is left unattended without wearing, then external factors can accidentally press volume buttons, but the user cannot notice or control the volume changes
Solution Approach 1:
The control section checks the mounting state before executing volume change operations. By performing this preliminary check, the system prevents accidental volume changes from occurring in the first place, rather than trying to detect or correct them after the fact.
Solution Approach 2:
The system provides feedback to the user about the mounting state and volume control status. When the HMD is not worn, the system notifies the user that volume control is restricted, making the system's behavior transparent and predictable.
2Ease of operation
If volume buttons are accessible when HMD is not worn, then the device is easy to operate, but incorrect operations can occur due to external factors
Solution Approach 1:
The control section applies preliminary anti-action by detecting the mounting state and preemptively preventing volume change operations when the HMD is not worn. This counteracts the potential harmful effect of accidental button pressing before it can occur.
Solution Approach 2:
The system dynamically adjusts the operability of volume buttons based on the mounting state. When worn, full volume control is enabled; when not worn, volume change operations are restricted. This dynamic adaptation optimizes both safety and usability.
3Reliability
If the HMD completely shields the user from external world, then virtual reality is increased, but the user cannot notice external operations on volume buttons
Solution Approach 1:
The system performs preliminary detection of the mounting state and preemptively restricts volume change operations. This prevents the problem before it arises, maintaining both immersion and safety without requiring the user to detect external operations while wearing the device.
Data Source
AI summary
Disclosed is a head mount display including: a display section displaying video pictures for the left and right eyes; an audio output section outputting sound accompanying the video pictures; a user operation section operated by the user to adjust the volume of the sound outputted by the audio output section; a mounting sensor detecting whether or not the user has worn the head mount display; and a control section controlling the operation to adjust the volume requested by the user by operating the user operation section in accordance with a detection result from the mounting sensor.