Head-Mounted Display Mounting Detection Power Management
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Solution Overview
Problem
Head-mounted displays (HMDs) face challenges in seamlessly transitioning video image display modes between wireless communication frequencies and user mounting states, leading to potential communication link instability and increased power consumption.
Innovation Solution
The HMD incorporates a predetermined frequency communication section for receiving video images via wireless communication, a post-mounting display control section for displaying images when the user is mounted, and a pre-mounting display control section for displaying images using alternative methods before the primary frequency communication is established, including image processing and line-of-sight detection to determine user mounting status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the HMD uses wireless communication at a predetermined frequency to receive video images, then the user can enjoy high-quality video content, but the power consumption increases and communication link stability decreases when the user is not wearing the device
Solution Approach 1:
The HMD dynamically switches between two operational modes based on mounting detection: a first mode when mounted where the predetermined frequency communication section actively receives video images, and a second mode when not mounted where it transitions to power-saving operation. This dynamic state change resolves the contradiction by adapting power consumption and communication activity to actual usage conditions.
Solution Approach 2:
The HMD uses its own mounting detection capability to automatically determine whether to activate or deactivate the predetermined frequency communication section, without requiring external control. The device self-regulates its power consumption and communication based on whether it is being worn, eliminating the need for manual user intervention.
2Ease of operation
If the HMD continuously maintains wireless communication readiness, then the user experience is improved with no interruption, but the power consumption increases during non-usage periods
Solution Approach 1:
The system dynamically adjusts its operational state based on mounting status. When the user is not mounted, the HMD enters a power-saving mode with reduced communication activity. When mounting is detected, it seamlessly transitions to full operational mode, ensuring user experience continuity only when needed while minimizing power consumption during non-usage.
Solution Approach 2:
Instead of continuous operation, the HMD employs periodic mounting detection to determine when to activate communication functions. The system checks mounting status and periodically transitions between operational modes, maintaining readiness only during periods when the user is actually wearing the device.
3Use of energy by moving object
If the HMD switches between different display modes based on mounting status, then power consumption is reduced, but the transition time and potential display interruption increase
Solution Approach 1:
The HMD performs preliminary mounting detection and prepares for mode transitions in advance. By detecting mounting status proactively and preparing the communication section for state changes, the system minimizes actual transition time and reduces display interruptions when switching between power-saving and operational modes.
Data Source
AI summary
The present invention provides a novel head-mounted display on which a video image received through wireless communication at a predetermined frequency is displayed, a display controlling apparatus, a display controlling method, and a program. A video image receiving section (94) receives a video image from an entertainment apparatus (14) through wireless communication at a predetermined frequency. A display controlling section (96) causes the video image received through the wireless communication at the predetermined frequency to be displayed on a display section of an HMD (12) in the case where it is decided that a user mounts the HMD (12). A display controlling section (96) causes a video image acquired by using a method other than reception in the video image receiving section (94) through the wireless communication at the predetermined frequency to be displayed on the display section of the HMD (12) before the video image received by the video image receiving section (94) through the wireless communication at the predetermined frequency is caused to be displayed on the display section of the HMD (12).