Wearable Display Offloading for Battery Life Extension
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Solution Overview
Problem
Current wearable devices with head-mounted displays (HMDs) face significant battery life limitations, particularly in augmented reality applications, where continuous use can drain batteries quickly, necessitating a solution to extend battery life without compromising user experience.
Innovation Solution
Implementing a method to offload content from the wearable device to an external display device when suitable, such as streaming video or computer graphics, by selecting an external device based on battery level and energy consumption, and adapting content for display on the external device, thereby reducing the load on the wearable device's battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If visual content is displayed on the head mounted display, then the user can see computer-rendered content, but the battery life is reduced
Solution Approach 1:
The patent extracts the display function from the head mounted display to an external display device. The wearable device determines whether to display content on the HMD or external device based on battery level, effectively removing the display burden from the HMD when battery is low, thus extending battery life while preserving display functionality through the external device
Solution Approach 2:
The patent introduces an intermediary decision-making mechanism that selects between two display paths (HMD or external device) based on battery conditions. This intermediary layer allows the system to dynamically switch display locations, resolving the contradiction between maintaining display functionality and preserving battery life
2Use of energy by moving object
If the wearable device processes and displays all visual content, then the user experience is complete, but energy consumption increases
Solution Approach 1:
The patent implements dynamic adaptability where the display destination (HMD or external device) changes based on real-time battery level conditions. The system adapts its behavior dynamically - when battery is sufficient, content displays on HMD; when battery is low, content redirects to external device. This dynamic adaptation resolves the contradiction between energy conservation and display versatility
Solution Approach 2:
The patent changes the operational parameter of display location based on battery level thresholds. By monitoring battery parameters and adjusting display behavior accordingly, the system reduces energy consumption during low-battery states while maintaining full display functionality when energy is充足, thus resolving the contradiction between energy use and adaptability
Data Source
AI summary
It is presented a method for controlling display of content, the method being performed in a wearable device, the wearable device comprising a head mounted display allowing a user to see both real-world objects and computer-rendered content. The method comprises the steps of: selecting an external display device in a vicinity of the wearable device; determining first visual content to be suitable for being displayed on the external display device; and sending a request for the external display device to display the first visual content and refraining from displaying the first visual content using the head mounted display.