Wireless Front End Power Management for Head Mounted Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing head-mounted display (HMD) systems lack efficient power management and activation control for their components, leading to unnecessary energy consumption and delayed functionality when performing complex tasks, as they often require manual intervention or full system activation for basic operations.
Innovation Solution
A wireless front end, utilizing Bluetooth, WiFi, or cellular interfaces, acts as a controller to activate only necessary system components upon verbal or gesture commands, placing non-essential devices in sleep mode to conserve power and enhance user interaction with minimal initial functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all system components are activated simultaneously, then functionality and responsiveness are improved, but power consumption increases
Solution Approach 1:
The system divides components into essential and non-essential groups, activating only essential components (audio, display) on power-on while keeping non-essential components (wireless interfaces, processors) in sleep mode. This segmentation allows the system to maintain basic functionality while significantly reducing power consumption.
Solution Approach 2:
The system dynamically adjusts component activation states based on operational needs. A state machine manages transitions between sleep and active states, allowing components to be activated only when required by user commands or system events, thereby optimizing the balance between functionality and power consumption.
2Device complexity
If manual intervention is required for component activation, then power management is simplified, but user experience and operational speed deteriorate
Solution Approach 1:
The system automatically manages component activation based on detected user commands and system state. The wireless interface monitors for wake-up commands and autonomously activates appropriate components without requiring manual user intervention, simplifying power management while maintaining ease of operation.
Solution Approach 2:
The system implements a feedback mechanism where the wireless interface continuously monitors user commands and system state, then automatically adjusts component activation accordingly. This closed-loop control ensures components are activated only when needed based on real-time system conditions.
3Reliability
If full system activation is used for basic operations, then functionality is ensured, but battery life decreases
Solution Approach 1:
The system segments components into essential and non-essential categories, activating only essential components for basic operations. This ensures reliable audio and display functionality while keeping power-intensive components (wireless interfaces, processors) in sleep mode, thereby extending battery life.
Solution Approach 2:
The system changes the operational parameters of components by transitioning them between active and sleep states based on operational requirements. This dynamic parameter adjustment ensures functionality is maintained when needed while minimizing power consumption to extend battery life during idle periods.
Data Source
AI summary
A headset computer that includes a wireless front end that interprets spoken commands and/or hand motions and/or body gestures to selectively activate subsystem components only as needed to carry out specific commands.